New York Codes, Rules and Regulations › Title 10 - DEPARTMENT OF HEALTH › Chapter I - State Sanitary Code › Part 5 - Drinking Water Supplies › Subpart 5-1 - Public Water Systems › Public Water Systems; Maximum Contaminant Levels; Monitoring Requirements; Notifications Required › Section 5-1.52 - Tables

Current through Register Vol. 46, No. 28, July 10, 2024
Click
						to view image
Click
						to view image
Click
						to view image
Click
						to view image
Click
						to view image
Click
						to view image
Click
						to view image
Click
						to view image
Click
						to view image
TABLE 5-DISTRIBUTION SYSTEM TURBIDITY MAXIMUM
						CONTAMINANT LEVEL DETERMINATION
Contaminant
MCL
Determination of MCL
								violation
Distribution point turbidity
5
								NTU
A violation occurs when the monthly average of the results of all
								distribution samples collected in any calendar month exceeds the MCL rounded
								off to the nearest whole number.
Table 6. Microbiological Contaminants Maximum Contaminant
						Level (MCL)/Treatment Technique Trigger (TTT)/ Treatment Technique Violation
						(TTV) Determination1
Contaminant/
Trigger/
Violation
Sample Location
MCL or TTT or TTV
Performance Standard
Determination of MCL/TTV and
									 TTT10
Total
									 coliform2
Distribution Sample Sites
TTT3
No positive sample4,
									 5
A Level 1 TTT occurs at systems collecting 40
									 or more samples per month when more than 5.0 percent of the samples are total
									 coliform positive.11
TTT3
A Level 1 TTT occurs at systems collecting less
									 than 40 samples per month when two or more samples are total coliform
									 positive.11
TTT3
A Level 1 TTT occurs at any system that fails
									 to collect every required repeat sample after any single total coliform
									 positive sample.11
TTT6
A Level 2 TTT occurs at any system that has a
									 second Level 1 trigger within a rolling 12-Level 1 TTT were total coliform
									 positive and has established that the system has corrected the
									 problem.11
Escherichia coli (E. Coli)
MCL/TTT4,
									 6
No positive sample5,
									 7
An MCL violation and Level 2 TTT occurs when a
									 total coliform sample is positive for E. coli and a repeat total coliform
									 sample is positive.13
MCL/TTT4,
									 6
No positive sample5,
									 7
An MCL violation and Level 2 TTT occurs when a
									 total coliform sample is positive for total coliform but negative for E. coli
									 and a repeat total coliform sample is positive for E.
									 coli.13
MCL/TTT4,
									 6
An MCL violation and Level 2 TTT occurs when a
									 total coliform sample is positive for total coliform but negative for E. coli
									 and a repeat total coliform positive sample is not analyzed for E.
									 coli.13
MCL/TTT4,
									 6
An MCL violation occurs when a system fails to
									 collect every required repeat sample after any E. coli positive routine
									 sample.
Fecal indicator: E. coli, and/or enterococci,
									 and/or coliphage8
Untreated Water from a Ground Water
									 Source
TTV
No fecal indicator in samples collected from
									 raw source water from a
									 ground9w10ater source.
									 ,
A TTV occurs when a raw water sample is
									 positive for the fecal indicator contaminant and system does not provide and
									 document, through process compliance monitoring, 4-log virus treatment during
									 peak flow at first customer. If repeat sampling of the raw water is directed by
									 the State and all additional samples are negative for fecal indicator, there is
									 no TTV.9, 13
Other trigger or violation
TTV4
A TTV occurs when a system exceeds a TTT and
									 then fails to conduct the required assessment or corrective
									 actions.12
TTV4
A TTV occurs when a seasonal system fails to
									 complete a State-approved start-up procedure prior to serving water to the
									 public.14
1All samples collected in
						accordance with Table 11 footnotes 1 and 2 and Table 11B of this section and
						samples collected in accordance with subdivision
						5-1.51(g)  of this
						Subpart shall be included in determining compliance with the MCL, TTT, and/or
						TTV unless any of the samples have been invalidated by the State. In accordance
						with 40 CFR
						141.852(a)(2) systems need
						only determine the presence or absence of total coliforms and E. coli; a
						determination of density is not required.
2Total coliform method
						additions or modifications to approved methods.
For total coliform (TC) samples collected from untreated
						surface water or GWUDI sources, the time from sample collection to initiation
						of analysis may not exceed 8 hours and the samples must be held below 10
						degrees C during transit to the laboratory. For other TC samples, the time from
						collection to initiation of analysis may not exceed 30 hours. Systems are
						encouraged, but not required, to hold TC samples below 10 degrees C during
						transit.
If the Total Coliform Fermentation Technique using
						standard methods 9221A or B is used, and if inverted tubes are used to detect
						gas production, the media should cover these tubes at least one half to
						two-thirds after the sample is added. Also, no requirement exists to run the
						completed phase on 10 percent of all TC-positive confirmed tubes. Additionally,
						lactose broth, as commercially available, may be used in lieu of lauryl
						tryptose broth, if the system conducts at least 25 parallel tests between this
						medium and lauryl tryptose broth using the water normally tested, and this
						comparison demonstrates that the false-positive rate and falsenegative rate for
						TC, using lactose broth, is less than 10 percent. If Membrane Filter Technique
						Standard Methods 9222A, B, and optionally C are used, MI agar also may be used.
						Verification of colonies is not required.
* If the Standard Methods Presence-Absence (P-A) Coliform
						Test, 9221D is used, six-times formulation strength may be used if the medium
						is filter-sterilized rather than autoclaved.
* If the Total Coliform Membrane Filter Technique,
						Standard Methods 9222 A, B, C is used, MI agar also may be used. Verification
						of colonies is not required.
* For any TC testing it is strongly recommended that
						laboratories evaluate the false-positive and negative rates for the method(s)
						they use for monitoring TC. Laboratories are also encouraged to establish
						false-positive and false-negative rates within their own laboratory and sample
						matrix (drinking water or source water) with the intent that if the method they
						choose has an unacceptable false-positive or negative rate, another method can
						be used. It is suggested that laboratories perform these studies on a minimum
						of 5% of all TC-positive samples, except for those methods where verification/
						confirmation is already required. Methods for establishing false-positive and
						negative-rates may be based on lactose fermentation, the rapid test for
						[BETA]-galactosidase and cytochrome oxidase, multi-test identification systems,
						or equivalent confirmation tests. False-positive and false-negative information
						is often available in published studies and/or from the manufacturer(s).
3The system must complete a
						Level 1 assessment as soon as practical after exceeding a Level 1 TTT. The
						system must submit the completed Level 1 assessment form to the State within 30
						days after the system learns that it has exceeded a trigger. Corrective actions
						shall be addressed in accordance with section
						5-1.71(e)  of this
						Subpart.
4See Table 13 for public
						notification requirements.
5If any total coliform or E.
						Coli sample is positive, repeat samples must be collected in accordance with
						Table 11B of this section.
6A Level 2 assessment must be
						completed within 30 days after the system learns that it has exceeded a
						trigger. Corrective actions shall be addressed in accordance with section
						5-1.71(e)  of this
						Subpart.
7For notification purposes, an
						E. coli MCL violation in the distribution system is a public health hazard
						requiring Tier 1 notification. At a ground water system, Tier 1 notification is
						required after initial detection of E. coli or other fecal indicator in raw
						source water, if the system does not provide 4-log virus treatment and process
						compliance monitoring, even if not confirmed with additional sampling.
8For any fecal indicator
						sample collected as described in section
						5-1.52, Table 6, the time from
						sample collection to initiation of analysis may not exceed 30 hours. The system
						is encouraged but is not required to hold samples below 10°C during
						transit.
9If raw water source sample is
						fecal indicator positive, the water system, in consultation with the State, may
						collect an additional 5 samples within 24 hours at each source that tested
						fecal indicator positive. If none of the additional samples are fecal indicator
						positive, then there is no TTV. Note that Tier 1 notification must be made
						after the initial raw water fecal indicator positive sample, even if it is not
						confirmed with additional sampling.
10Failure to take every
						required routine or additional routine sample in a compliance period is a
						monitoring violation.
11Failure to analyze for E.
						coli following a total coliform positive routine sample is a monitoring
						violation.
12Failure to submit a
						monitoring report or completed assessment form after a system properly conducts
						monitoring or assessment in a timely manner is a reporting violation.
13Failure to notify the State
						following an E. coli-positive sample as required by 5-1.52 Table 13 and
						5-1.77(a) of this Subpart in a timely manner is a reporting violation.
14Failure to submit
						certification of completion of State approved start-up procedure by a seasonal
						system is a reporting violation.
Footnote 4 of section
						5-1.52  Table 11A is amended to
						read as follows:
4Samples must be taken and
						analyzed every day the system serves water to the public and the turbidity of
						the raw water exceeds 1 NTU. The samples count toward the weekly sampling
						requirement.
Click
						to view image
Click
						to view image
TABLE 8A-INORGANIC CHEMICALS AND PHYSICAL
						CHARACTERISTICS MINIMUM MONITORING REQUIREMENTS FOR ASBESTOS
Initial Frequency by Source
								Type
5
Contaminant
Type of
water system
Groundwater
								only
Surface only or
surface and groundwater
Repeat
								sampling
and compliance
Asbestos1
Community
								and NTNC
One sample at entry point by
								12/31/952,3,4
One sample at entry point by
								12/31/952,3,4
If GT MCL, one sample
								quarterly6,7
If LT MCL, one sample every nine years
GT - Greater Than LT - Less Than
1 If a system is not
						vulnerable to asbestos contamination, either at its source or due to corrosion
						of asbestos cement pipe, it is not required to monitor if granted a waiver by
						the State. The waiver must be renewed by the State every nine years. The basis
						for a waiver must include the following:
a. Lack of potential asbestos contamination
					 of the water source.
b. No use of
					 asbestos cement pipe for finished water distribution and noncorrosive nature of
					 the water.
2 If asbestos monitoring data
						collected after January 1, 1990 are consistent with the requirements of this
						table, the State may allow systems to use that data to satisfy the initial
						monitoring requirement beginning January 1, 1993.
3 If a system is vulnerable to
						asbestos contamination due to source water and corrosion of asbestos cement
						pipe or solely to corrosion of asbestos cement pipe, it shall take one sample
						at a tap served by asbestos cement pipe and under conditions where asbestos
						contamination is most likely to occur.
4 If a system is vulnerable to
						asbestos contamination due to source water only, monitoring shall be conducted
						as follows: Groundwater -Collect a minimum of one sample at each entry point to
						the distribution system representative of each well after treatment. Surface
						water - Collect a minimum of one sample at each entry point to the distribution
						system after any application of treatment or in the distribution system at a
						point which is representative of each source after treatment.
5 For both types of water
						sources the system shall take each sample at the same sampling point unless
						conditions make another sampling point more representative of each source or
						treatment plant. If a system draws water from more than one source and the
						sources are combined before distribution, the system must sample at an entry
						point to the distribution system during periods of normal operating conditions
						when water is representative of all sources.
6 A system which exceeds the
						MCL for asbestos shall monitor quarterly beginning in the next quarter after
						the violation occurred.
7 The State may decrease the
						quarterly monitoring requirement to the initial sampling requirement provided
						that the State has determined that the system is reliably and consistently
						below the MCL on the basis of a minimum of two quarterly groundwater samples
						and a minimum of four quarterly samples for surface water.
Click
						to view image
Click
						to view image
Click
						to view image
TABLE 8C-INORGANIC CHEMICALS AND PHYSICAL
						CHARACTERISTICS MINIMUM MONITORING REQUIREMENTS-NITRATES,
						NITRITES
Initial Frequency by Source
								Type
1,6
Contaminant
Type of water system
Groundwater only
Surface only or
surface and
								groundwater
Accelerated
								sampling
7
Nitrate
Community and
								noncommunity2
One sample per entry point per
								year
One sample per entry point quarterly
For groundwater: If
								equal to or GT 50 percent MCL, quarterly for one
								year3
For surface water: If LT 50 percent MCL, one sample
								per year3,4
Nitrate
Community and
								noncommunity
One sample per entry point by 12/31/95
One sample
								per entry point by 12/31/95
If equal to or GT 50 percent MCL, repeat
								quarterly for at least one year3,4
If LT 50 percent MCL sample frequency at State
								discretion.5
GT - Greater Than
LT - Less Than
1 The State may require, or
						the water system may request, more frequent monitoring frequencies than is
						minimally required. The State, at its discretion may require confirmation
						samples for positive and negative results.
2 Noncommunity water systems
						must sample annually beginning 1/1/93 regardless of the water source.
3 The frequency may be reduced
						to annual if the State determines the system's contaminant concentration is
						consistently and reliably less than the MCL and annual samples are collected
						during the quarter(s) having the highest analytical results.
4 A surface water shall return
						to quarterly monitoring if any one sample is GT 50 percent of MCL.
5 State discretion shall mean
						requiring monitoring when the State has reason to believe the MCL has been
						violated, the potential exists for an MCL violation or the contaminant may
						present a risk to public health.
6 For both types of water
						sources the system shall take each sample at the same sampling point unless
						conditions make another sampling point more representative of each source or
						treatment plant. If a system draws water from more than one source and the
						sources are combined before distribution, the system must sample at an entry
						point to the distribution system during periods of normal operating conditions
						when water is representative of all sources. The average of the initial and
						confirmation sample contaminant concentration at each sampling point shall be
						used to determine compliance with the MCL.
TABLE 8D-INORGANIC CHEMICALS AND PHYSICAL
						CHARACTERISTICS MINIMUM MONITORING REQUIREMENTS-OTHER CHEMICALS
Initial Frequency by Source
								  Type
Contaminant
Type
								  of water system
Groundwater
								  only
Surface only or surface and
								  groundwater
Repeat sampling and
								  compliance
Chloride
Community
State
								  discretion2
State
								  discretion2
State
								  discretion2
Iron
and NTNC
Manganese
Silver
Sodium1
Sulfate
Zinc
Color
Odor
1 All community systems with
						sodium levels exceeding 20 mg/l will be required to sample for sodium
						analysis.
2 State discretion shall mean
						requiring monitoring when the State has reason to believe the MCL has been
						violated, the potential exists for an MCL violation or the contaminant may
						present a risk to public health.
Click
						to view image
Click
						to view image
Click
						to view image
Click
						to view image
Click
						to view image
Click
						to view image
Click
						to view image
TABLE 9D-ORGANIC CHEMICALS-POCs MINIMUM MONITORING
						REQUIREMENTS
Contaminant
Specific
								  contaminants for analysis
POC's
benzene1
1,1-dichloropropene
bromobenzene
cis-1,3-dichloropropene
bromochloromethane
trans-1,3-dichloropropene
bromomethane
ethylbenzene1
n-butylenzene
hexachlorobutadiene
sec-butylbenzene
isopropylbenzene
tert-butylbenzene
p-isopropyltoluene
carbon
								  tetrachloride1
methylene
								  chloride1
chlorobenzene
n-propylbenzene
chloroethane
styrene1
chloromethane
1,1,1,2-tetrachloroethane
2-chlorotoluene
1,1,2,2-tetrachloroethane
4-chlorotoluene
tetrachloroethene1
didromomethane
toluene1
1,2-dichlorobenzene1
1,2,3-trichlorobenzene
1,3-dichlorobenzene
1,2,4-trichlorobenzene1
1,4-dichlorobenzene1
1,1,1-trichloroethane1
dichlorodifluoromethane
1,1,2-trichloroethane1
1,1-dichioroethane
trichloroethene1
1,2-dichloroethane1
trichlorofluoromethane
1,1-dichlorethane1
1,2,3-trichloropropane
cis-1,2-dichloroethene1
1,2,4-trimethylbenzene
trans-1,2-dichloroethene1
1,3,5-trimethylbenzene
1,2-dichloropropane1
m-xylene1
1,3-dichloropropane
o-xylene1
2,2-dichloropropane
p-xylene1
1 Notification must contain
						mandatory health effect language.
Click
						to view image
TABLE 10A-TURBIDITY MINIMUM MONITORING REQUIREMENTS
						1
Source type
Contaminant
Type of water
								  system
Groundwater
Surface
								  water
1
Filtered water turbidity
Community and noncommunity
Not applicable
Continuous monitoring for composite filter effluent
								  and individual filters.2,3,4 ,5
Raw water turbidity
Unfiltered surface: community and noncommunity
Not applicable
Every four hours or continuous
								  monitoring5
Distribution point turbidity
Community
State discretion7
Five distribution samples each week unless
								  otherwise determined by the State. No two samples may be obtained on the same
								  day and no two samples are to be collected from the same distribution point
								  during the same week.
Noncommunity
State discretion7
State discretion6
1 Surface water sources or
						groundwater sources directly influenced by surface water.
2 Effective January 1, 2002
						systems serving 10,000 or more people must record the results of individual
						filter monitoring every 15 minutes, and combined filter effluent every four
						hours. Effective January 14, 2005 systems serving fewer than 10,000 persons
						must record the results of individual filter monitoring every 15 minutes, and
						combined filter effluent every four hours. Until January 14, 2005, systems
						serving fewer then 10,000 persons must continuously monitor the composite
						filter effluent turbidity, or record the turbidity every four hours. The State
						may allow systems with two filters to monitor the combined filter effluent
						continuously (recording every 15 minutes) in lieu of monitoring individual
						filter turbidity. Results of individual filter monitoring must be maintained
						for at least three years.
3 If there is a failure in the
						continuous turbidity monitoring equipment, the system must conduct grab
						sampling every four hours instead of continuous monitoring, but for no more
						than five working days following the failure of the equipment.
4 For systems using slow sand
						filtration or filtration treatment, other than conventional treatment, direct
						filtration or D.E. filtration, the State may reduce sampling frequency to once
						per day if it determines that less frequent monitoring is sufficient to
						indicate effective filtration performance.
5 If a system uses continuous
						monitoring, it must use the turbidity values recorded every four hours to
						determine if an MCL violation occurs, unless the State has approved in writing
						a different time interval.
6 State discretion shall mean
						requiring monitoring when the State has reason to believe the MCL has been
						violated, the potential exists for an MCL violation or the contaminant may
						present a risk to public health.
TABLE 11-MICROBIOLOGICAL MINIMUM MONITORING
						REQUIREMENTS (Refer to Table 11B following any positive
						samples)1,2,3
						,4
Contaminant
Type of Water System
Number of Routine Samples Based on
									 Population
Population Served
Minimum Number of Samples per
									 Month4
Population Served
Minimum Number of Samples
per
									 Month4
Total
coliform in distribution
system5
Community
Up to
									 1,0006,7
1
59,001 to 70,000
70
1,001 to 2,500
2
70,001 to 83,000
80
2,501 to 3,300
3
83,001 to 96,000
90
3,301 to 4,100
4
96,001 to 130,000
100
4,101 to 4,900
5
130,001 to 220,000
120
4,901 to 5,800
6
220,001 to 320,000
150
5,801 to 6,700
7
320,001 to 450,000
180
6,701 to 7,600
8
450,001 to 600,000
210
7,601 to 8,500
9
600,001 to 780,000
240
8,501 to 12,900
10
780,001 to 970,000
270
12,901 to 17,200
15
970,001 to 1,230,000
300
17,201 to 21,500
20
1,230,001 to 1,520,000
330
21,501 to 25,000
25
1,520,001 to 1,850,000
360
25,001 to 33,000
30
1,850,001 to 2,270,000
390
33,001 to 41,000
40
2,270,001 to 3,020,000
420
41,001 to 50,000
50
3,020,001 to 3,960,000
450
50,001 to 59,000
60
3,960,001 or more
480
Noncommunity using surface water or groundwater
									 directly influenced by surface water
All
Same as community
Noncommunity using only groundwater not
									 directly influenced by surface water9
<=1,000
Quarterly8,9
>1,000
Same as community
Seasonal
All
Monthly9
Escherichia coli(E. coli)
Community and Noncommunity
All
Any routine or repeat samples that are Coliform
									 positive must be analyzed for
E. coli.4,10
Fecal
Indicator in Raw Source
Water10
All ground water systems unless providing 4-log
									 virus treatment and process compliance monitoring
All
State
									 discretion11
1. Public water supply systems
						must collect total coliform samples at sites that are representative of water
						throughout the distribution system and throughout the reporting period, in
						accordance with a written monitoring plan which is subject to State review and
						revision as described in section
						5-1.51(c) 
						of this Subpart. A public water system that uses only groundwater and serves
						4,900 or fewer people may collect all required samples on a single day if they
						are taken from different sites.
2. Public water systems using
						surface water or groundwater directly influenced by surface water, and which do
						not provide filtration, must collect and analyze at least one sample for total
						coliforms near the first service connection each day the turbidity level of the
						raw water exceeds 1.49 NTU. This sample shall be collected within 24 hours.
						Results of this sample must be included in determining compliance with the MCLs
						and TTTs in Table 6 of this section.
3. Samples taken to determine
						disinfection practices after pipe repair, replacement, or similar activity are
						not to be used for determining compliance with the MCLs or TTTs in Table 6 of
						this section.
4. See Table 11B for repeat
						sampling requirements following any total coliform or E. Coli positive
						samples.
5. If chlorine or chloramines
						are used as the disinfectant, a chlorine residual determination shall be made
						at the same time and location that the sample is collected for total coliform
						analysis. Monitoring for heterotrophic bacteria may be substituted for free
						chlorine residuals. The State may allow a public water system that uses
						both:
(1) a surface water source, or a
					 ground water source under direct influence of surface water, and
(2) a ground water source, to take
					 disinfectant residual samples at points other than the total coliform sampling
					 points if the State determines that such points are more representative of
					 treated (disinfected) water quality within the distribution system. A
					 heterotrophic plate count result equal to or less than 500 colonies per
					 milliliter is considered to be equivalent to a measurable free chlorine
					 residual.
6. The State may, in writing,
						reduce the monitoring frequency to quarterly for a community water system
						serving 1,000 or fewer persons and using ground water only if the system is in
						compliance with 10 NYCRR Subpart 5-4; has a clean compliance history for a
						minimum of 12-months; is free of sanitary defects; and has a protected water
						source. The system must meet at least one of the following criteria: an annual
						site visit by the State or State-approved party that is equivalent to a Level 2
						assessment and correction of all identified sanitary defects; cross connection
						control, as approved by the State; continuous disinfection entering the
						distribution system and a residual in the distribution system in accordance
						with criteria specified by the State; or demonstration of maintenance of at
						least a 4-log removal or inactivation of viruses. Systems that have been
						granted a disinfection waiver are not eligible for reduced monitoring
						frequency.
7. A community water system on
						quarterly monitoring must begin monthly monitoring if it meets any of the
						following conditions: a Level 2 assessment is triggered; two Level 1
						assessments in a rolling 12-month period are triggered; an E. coli MCL
						violation; a coliform TTV; or two total coliform monitoring violations in a
						rolling 12-month period. Monthly monitoring must begin in the month following
						the event.
8. A noncommunity water system
						on quarterly monitoring must begin monthly monitoring if it meets any of the
						following conditions: a Level 2 assessment is triggered; two Level 1
						assessments in a rolling 12-month period are triggered; an E. coli MCL
						violation; a coliform TTV; two total coliform monitoring violations; or one
						total coliform monitoring violation and one Level 1 assessment in a rolling
						12-month period. Monthly monitoring must begin in the month following the
						event.
9. A noncommunity water system
						may return to quarterly monitoring if they meet the following criteria: within
						the last 12 months, the system must have a completed sanitary survey or Level 2
						assessment, be free of sanitary defects, have a protected water source; and the
						system must have a clean compliance history for a minimum of 12 months.
10. Fecal indicators include
						E. coli, enterococci, and coliphage. Only E. coli testing will be required,
						unless otherwise directed by the State.
11. State discretion shall
						mean that monitoring is required when the State has reason to believe the MCL
						or TT has been violated, the potential exists for an MCL violation or TTV; or
						the contaminant may present a risk to public health.
TABLE 11A-MICROBIOLOGICAL/FILTRATION AVOIDANCE
						CRITERIA MINIMUM MONITORING
						REQUIREMENTS1
Contaminant
2
Type
								  of water system
Population
								  served:
Minimum number of samples per
								  week
3,4
Raw water fecal or total
								  coliform
Community and noncommunity
Up to 500 501 to
								  3,300
1 2
3,301 to 10,000
3
10,001 to 25,000
4
25,001 or more
5
1 The monitoring requirement
						applies to surface water sources and groundwater sources directly influenced by
						surface water.
2 Either fecal or total
						coliform density measurements are acceptable. If both analyses are performed,
						the fecal coliform results will take precedence.
3 Monitoring sampling must be
						performed on separate days.
4 Samples must be taken and
						analyzed every day the system serves water to the public and the turbidity of
						the raw water exceeds 1.49 NTU. The samples count toward the weekly sampling
						requirement.
TABLE 11B-REPEAT MICROBIOGICAL SAMPLING
						REQUIREMENTS FOLLOWING TOTAL COLIFORM POSITIVE AND/OR FECAL INDICATOR POSITIVE
						SAMPLE(S)
Type of Positive Sample
Type of Water System/Source
System Size
Number of Repeat
Samples Required
Within 24 Hours of
Notification
Sampling Location
Required Action for
Positive Repeat
Samples
Routine total coliform sample(s) from
									 distribution system
Surface water, GWUDI, or ground water
									 performing 4-log virus treatment and process compliance monitoring
More than one service connection
Three distribution system samples
The same sampling site where the original
									 coliform-positive sample was collected, one sample within five service
									 connections upstream, one sample within five service connections downstream in
									 accordance with a state approved sampling plan.
Distribution sampling must be repeated until
									 total coliform is not detected in repeat samples, or it is determined that a
									 treatment technique has been triggered or an MCL has been
violated.2,
																	3
One service connection
One distribution
system
									 sample4
Original sampling location
Ground water system or ground water source not
									 providing (or not documenting) 4-log virus
									 treatment5
Population >1,000
Three distribution system samples and one
									 source water sample from each source collected in accordance with a
									 State-approved sampling plan6
The same distribution system sampling site
									 where the original coliform-positive sample was collected, one sample within
									 five service connections upstream, one sample within five service connections
									 downstream. An additional sample must be collected from each raw water source
									 or according to State approved sampling plan.6,
																	7
Distribution sampling must be repeated until
									 total coliform is not detected in repeat samples, or it is determined that a
									 treatment technique has been triggered or an MCL has been
violated.2,
																	3
Population <=1,000 and more than one service
									 connection
Three distribution system samples and one
									 source water sample from each source collected in accordance with a
									 State-approved sampling plan. 5,
																	8
The same distribution system sampling site
									 where the original coliform-positive sample was collected, one sample within
									 five service connections upstream, and one sample within five service
									 connections downstream. An additional sample must be collected from each raw
									 water source or according to State approved sampling
									 plan.6,
																	7,
																	8
One service connection
One distribution system sample and source water
									 sample(s) in accordance with a State-approved
sampling plan4,
																	6,
																	8
Original sampling location. An additional
									 sample must be collected from each raw water source or according to State
									 approved sampling plan.6,
																	7,
																	8
Wholesale System of any size
After notification by consecutive system of
									 total coliform-positive sample6,
																	7,
																	9,
																	
									 11
Collect one raw water sample at each source or
									 in accordance with a State-approved sampling
									 plan.6,7,
									 9
As directed by
									 State10
Source water sample(s) fecal indicator
positive7,
																	10
Ground water system or ground water source not
									 providing or not documenting 4-log virus treatment
All
Five raw water samples for fecal indicator or
									 immediate corrective action as directed by State 6, 9,
									 11
Fecal indicator sampling from source or sources
									 with initial fecal indicator positive samples6,
																	7
As directed by
									 State10,
																	11
1. After any total coliform
						positive sample from the distribution system, the system must collect repeat
						samples on the same day and within 24 hours of being notified.
2. The month following a total
						coliform positive sample, systems collecting samples quarterly must collect a
						minimum of three routine distribution system samples. The State may waive, in
						writing, the requirement to collect three routine samples the following month
						the system provides water to the public, if the State carries out an onsite
						visit before the end of the following month and the State determines why the
						sample was total coliform positive and establishes that the system has
						corrected the problem. The State cannot waive the requirement to collect three
						routine samples solely on the basis that all the repeat samples were total
						coliform negative. Before the end of the following month the system serves
						water to the public, at least one routine sample to determine compliance with
						the MCLs and TTTs must be collected by the system as required in Table
						11.
3. Results of all routine and
						repeat microbiological samples not invalidated by the State must be used to
						determine whether a coliform TTT specified in Table 6 has been exceeded.
4. The State may allow a
						system with a single service connection to collect the required set of repeat
						samples over a three-day period or to collect a larger volume repeat sample(s)
						in one or two more sample containers of any size, as long as the total volume
						collect is at least 300 mL. If E. coli is used as the fecal indicator at a
						ground water system with a single well, a single sample of two (2) times the
						minimum sample volume or two (2) bottles of minimum required sample volume may
						be collected consecutively from the tap and the third sample collected from the
						raw water source. This source water sample result must be used to determine
						compliance with all Table 6 requirements.
5. If a consecutive system
						purchasing (or otherwise obtaining) ground water from a wholesale system has a
						total coliform-positive sample from the distribution system, the system must
						notify the wholesale system and collect distribution system repeat samples as
						specified in Table 11B within 24 hours. The wholesale system must collect raw
						source water sample(s) unless the system provides 4-log virus treatment at peak
						flow before or at the first customer as confirmed through process compliance
						monitoring.
6. Sampling plan requirements
						are given in section
						5-1.51(c) 
						of this Subpart.
7. Fecal indicators include E.
						coli, enterococci and coliphage. Sampling for fecal indicators other than
						E.coli is at State discretion.
8. A system with a single well
						or a ground water source serving 1,000 or fewer persons may collect a single
						raw water sample to serve as both a distribution repeat sample to replace the
						upstream location sample and a raw water sample taken following a routine total
						coliform positive sample, if E. coli is used as the fecal indicator. If this
						dual-purpose source water sample is collected, the sample result must be used
						to determine compliance with all Table 6 requirements.
9. Wholesale system source
						water sampling requirements are in addition to distribution system sampling
						requirements for consecutive systems.
10. In the event of a fecal
						indicator positive sample from the raw source water, the state must be notified
						immediately and may require immediate corrective action. In no case will
						notification be later than 24 hours as described in section
						5-1.78(d)(4) 
						of this Subpart.
11. If a ground water
						wholesale system does not perform 4-log virus treatment and process compliance
						monitoring, and has a fecal indicator positive sample from a raw source water,
						the system must notify any consecutive systems as well as any of its own
						customers.
TABLE 12-RADIOLOGICAL MINIMUM MONITORING
						REQUIREMENTS
Contaminant
Type
								  of water system
Monitoring
								  Requirement1
Initial
Reduced
								  monitoring2,3
Combined radium-226 and radium-228 and gross
								  alpha particle activity
Community
Four consecutive quarterly
								  samples at every entry point before December 31, 2007,
								  4,5,6
One
								  sample every nine years at every entry point when monitoring results are below
								  the detection
								  limit.7,8
One sample every six years at every entry point
								  when monitoring results are at or above the detection limit but below half of
								  the
								  MCL.7,8
One sample every three years at every entry point
								  when monitoring results are above half of the MCL but at or below the
								  MCL.7,8
Noncommunity
Not applicable
Beta particle and photon radioactivity from
								  manmade radionuclides
Community systems designated by the State as
								  vulnerable9
Quarterly samples for beta
								  particle and annual samples for tritium and Sr-90, beginning within one quarter
								  after being notified by the
								  State.10,11
If
								  the gross beta particle activity minus the naturally occurring K-40 beta
								  particle activity at a sampling point has a running annual average (computed
								  quarterly) less than or equal to 50 pCi/L (screening level), the State may
								  reduce the frequency of monitoring at that sampling point to once every 3
								  years.14,15
Community systems designated by the State as
								  utilizing waters contaminated by effluents from nuclear
								  facilities9
Quarterly samples for beta
								  emitters and I-131 and annual samples for tritium and Sr-90, beginning within
								  one quarter after being notified by the
								  State.10,11,12,13
If
								  the gross beta particle activity minus the naturally occurring K-40 beta
								  particle activity at a sampling point has a running annual average (computed
								  quarterly) less than or equal to 15 pCi/L (screening level), the State may
								  reduce the frequency of monitoring at that sampling point to once every 3
								  years.14,15
1 All radiological samples
						must be collected at every entry point to distribution system (EPTDS).
2 The State may allow systems
						to reduce the frequency of monitoring based on initial monitoring or historical
						results as noted in footnote 4 below.
3 Systems on a reduced
						monitoring schedule must perform quarterly sampling if a sample result exceeds
						the MCL.
4 The State may allow
						historical monitoring data collected between June 2000 and December 8, 2003 for
						systems with:
(1) only one entry point
					 to the distribution system;
(2)
					 multiple entry points and having appropriate historical monitoring data for
					 each entry point to the distribution system;
(3) appropriate historical data for a
					 representative point in the distribution system, provided that the State finds
					 that the historical data satisfactorily demonstrate that each entry point to
					 the distribution system is expected to be in compliance based upon the
					 historical data and reasonable assumptions about the variability of contaminant
					 levels between entry points.
5 The State may waive the
						final two quarters of initial monitoring for a sampling point if the results of
						the samples from the previous two quarters are below the detection
						limit.
6 If the average of the
						initial monitoring results for a sampling point is above the MCL, the system
						must collect and analyze quarterly samples at the sampling point until the
						system has results from four consecutive quarters that are at or below the
						MCL.
7 A gross alpha particle
						activity measurement may be substituted for the required radium-226 measurement
						provided that the measured gross alpha particle activity does not exceed 5
						pCi/L. A gross alpha particle activity measurement may be substituted for the
						required uranium measurement provided that the measured gross alpha particle
						activity does not exceed 15 pCi/L. The gross alpha measurement shall have a
						confidence interval of 95 % (1.65[SIGMA], where [SIGMA] is the standard
						deviation of the net counting rate of the sample) for radium-226 and uranium.
						When a system uses a gross alpha activity measurement in lieu of a radium-226
						and/or uranium measurement, the gross alpha particle activity analytical result
						will be used be determine the future monitoring frequency for radium-226 and/or
						or uranium. If the gross alpha particle activity result is less than detection,
						1/2 the detection limit can be used to substitute to radium-226 and determine
						compliance for future monitoring frequency.
8 Radium-228 measurement can
						not be substituted by the gross alpha particle activity result.
9 For systems in the vicinity
						of a nuclear facility, the State may allow the CWS to utilize environmental
						surveillance data collected by the nuclear facility in lieu of monitoring the
						systems entry point(s), where the State determines that such data is
						applicable.
10Systems already designed by
						the State must continue to sample until the State reviews and either reaffirms
						or removes the designation.
11Quarterly monitoring for
						gross beta particle activity shall be based on the analysis of monthly samples
						or the analysis of a composite of three monthly samples.
12Annual monitoring for Sr-90
						and tritium shall be conducted by means of the analysis of a composite of four
						consecutive quarterly samples or analysis of four quarterly samples.
13For iodine-131, a composite
						of five consecutive daily samples shall be analyzed once each quarter. As
						ordered by the State, more frequent monitoring shall be conducted when
						iodine-131 is identified in the finished water.
14Systems must collect all
						samples for beta emitters, tritium and strontium-90 during the reduced
						monitoring period.
15A system that exceeds the
						gross beta particle activity minus the naturally occurring potassium-40 beta
						particle screening level (50 pCi/L for vulnerable systems or 15 pCi/L for
						systems utilizing waters contaminated by effluents from nuclear facilities),
						must further analyze the sample for the major radioactive constituents. The
						potassium-40 beta particle activity must be calculated by multiplying elemental
						potassium concentrations in mg/L by a factor of 0.82.
Click to view image
Click to view image
Click to view image
Click to view image
Click to view image
TABLE 14A-CT VALUES (CT99.9)
						FOR 99.9 PERCENT INACTIVATION OF
GIARDIA LAMBLIA
CYSTS BY FREE
						CHLORINE AT 0.5 DEGREES CELSIUS OR
						LOWER1
Free chlorine residual
								  (mg/l)
pH
<=6.0
6.5
7.0
7.5
8.0
8.5
<=9.0
<=0.4
137
163
195
237
277
329
390
0.6
141
168
200
239
286
342
407
0.8
145
172
205
246
295
354
422
1.0
148
176
210
253
304
365
437
1.2
152
180
215
259
313
376
451
1.4
155
184
221
266
321
387
464
1.6
157
189
226
275
329
397
477
1.8
162
193
231
279
338
407
489
2.0
165
197
236
286
346
417
500
2.2
169
201
242
297
353
426
511
2.4
172
205
247
298
361
435
522
2.6
175
209
252
304
368
444
533
2.8
178
213
257
310
375
452
543
3.0
181
217
261
316
382
460
552
1 These CT values achieve
						greater than a 99.99 percent inactivation of viruses. CT values between the
						indicated pH values may be determined by linear interpolation. CT values
						between the indicated temperatures of different tables may be determined by
						linear interpolation. If no interpolation is used, use the
						CT99.9; value at the lower temperature, and at the
						higher pH.
TABLE 14B-CT VALUES (CT99.9)
						FOR 99.9 PERCENT INACTIVATION OF
GIARDIA LAMBLIA
CYSTS BY FREE
						CHLORINE AT 5.0 DEGREES CELSIUS1
Free chlorine residual
								  (mg/l)
pH
<=6.0
6.5
7.0
7.5
8.0
8.5
<=9.0
<=0.4
97
117
139
166
198
236
279
0.6
100
120
143
171
204
244
291
0.8
103
122
146
175
210
252
301
1.0
105
125
149
179
216
260
312
1.2
107
127
152
183
221
267
320
1.4
109
130
155
187
227
274
329
1.6
111
132
158
192
232
281
337
1.8
114
135
162
196
238
287
345
2.0
116
138
165
200
243
294
353
2.2
118
140
169
204
248
300
361
2.4
120
143
172
209
253
306
368
2.6
122
146
175
213
258
312
375
2.8
124
148
178
217
263
318
382
3.0
126
151
182
221
268
324
389
1 These CT values achieve
						greater than a 99.99 percent inactivation of viruses. CT values between the
						indicated pH values may be determined by linear interpolation. CT values
						between the indicated temperatures of different tables may be determined by
						linear interpolation. If no interpolation is used, use the
						CT99.9 value at the lower temperature, and at the higher
						pH.
TABLE 14C-CT VALUES (CT99.9)
						FOR 99.9 PERCENT INACTIVATION OF
GIARDIA LAMBLIA
CYSTS BY FREE
						CHLORINE AT 10.0 DEGREES CELSIUS1
Free chlorine residual
								  (mg/l)
pH
<=6.0
6.5
7.0
7.5
8.0
8.5
<=9.0
<=0.4
73
88
104
125
149
177
209
0.6
75
90
107
128
153
183
218
0.8
78
92
110
131
158
189
226
1.0
79
94
112
134
162
195
234
1.2
80
95
114
137
166
200
240
1.4
82
98
116
140
170
206
247
1.6
83
99
119
144
174
211
253
1.8
86
101
122
147
179
215
259
2.0
87
104
124
150
182
221
265
2.2
89
105
127
153
186
225
271
2.4
90
107
129
157
190
230
276
2.6
92
110
131
160
194
234
281
2.8
93
111
134
163
197
239
287
3.0
95
113
137
166
201
243
292
1 These CT values achieve
						greater than a 99.99 percent inactivation of viruses. CT values between the
						indicated pH values may be determined by linear interpolation. CT values
						between the indicated temperatures of different tables may be determined by
						linear interpolation. If no interpolation is used, use the
						CT99.9 value at the lower temperature, and at the higher
						pH.
TABLE 14D-CT VALUES (CT99.9)
						FOR 99.9 PERCENT INACTIVATION OF
GIARDIA LAMBLIA
CYSTS BY FREE
						CHLORINE AT 15.0 DEGREES CELSIUS1
Free chlorine residual
								  (mg/l)
pH
<=6.0
6.5
7.0
7.5
8.0
8.5
<=9.0
<=0.4
49
59
70
83
99
118
140
0.6
50
60
72
86
102
122
146
0.8
52
61
73
88
105
126
151
1.0
53
63
75
90
108
130
156
1.2
54
64
76
92
111
134
160
1.4
55
65
78
94
114
137
165
1.6
56
66
79
96
116
141
169
1.8
57
68
81
98
119
144
173
2.0
58
69
83
100
122
147
177
2.2
59
70
85
102
124
150
181
2.4
60
72
86
105
127
153
184
2.6
61
73
88
107
129
156
188
2.8
62
74
89
109
132
159
191
3.0
63
76
91
111
134
162
195
1 These CT values achieve
						greater than a 99.99 percent inactivation of viruses. CT values between the
						indicated pH values may be determined by linear interpolation. CT values
						between the indicated temperatures of different tables may be determined by
						linear interpolation. If no interpolation is used, use the
						CT99.9 value at the lower temperature, and at the higher
						pH.
TABLE 14E-CT VALUES (CT99.9)
						FOR 99.9 PERCENT INACTIVATION OF
GIARDIA LAMBLIA
CYSTS BY FREE
						CHLORINE AT 20.0 DEGREES CELSIUS 1
Free chlorine residual
								  (mg/l)
pH
<=6.0
6.5
7.0
7.5
8.0
8.5
<=9.0
<=0.4
36
44
52
62
74
89
105
0.6
38
45
54
64
77
92
109
0.8
39
46
55
66
79
95
113
1.0
39
47
56
67
81
98
117
1.2
40
48
57
69
83
100
120
1.4
41
49
58
70
85
103
123
1.6
42
50
59
72
87
105
126
1.8
43
51
61
74
89
108
129
2.0
44
52
62
75
91
110
132
2.2
44
53
63
77
93
113
135
2.4
45
54
65
78
95
115
138
2.6
46
55
66
80
97
117
141
2.8
47
56
67
81
99
119
143
3.0
47
57
68
83
101
122
146
1 These CT values achieve
						greater than a 99.99 percent inactivation of viruses. CT values between the
						indicated PH values may be determined by linear interpolation. CT values
						between the indicated temperatures of different tables may be determined by
						linear interpolation. If no interpolation is used, use the
						CT99.9 value at the lower temperature, and at the higher
						pH.
TABLE 14F-CT VALUES (CT99.9)
						FOR 99.9 PERCENT INACTIVATION OF
GIARDIA LAMBLIA
CYSTS BY FREE
						CHLORINE AT 25.0 DEGREES CELSIUS AND
						HIGHER1
Free chlorine residual
								  (mg/l)
pH
<=6.0
6.5
7.0
7.5
8.0
8.5
<=9.0
<=0.4
24
29
35
42
50
59
70
0.6
25
30
36
43
51
61
73
0.8
26
31
37
44
53
63
75
1.0
26
31
37
45
54
65
78
1.2
27
32
38
46
55
67
80
1.4
27
33
39
47
57
69
82
1.6
28
33
40
48
58
70
84
1.8
29
34
41
49
60
72
86
2.0
29
35
41
50
61
74
88
2.2
30
35
42
51
62
75
90
2.4
30
36
43
52
63
77
92
2.6
31
37
44
53
65
78
94
2.8
31
37
45
54
66
80
96
3.0
32
38
46
55
67
81
97
1 These CT values achieve
						greater than a 99.99 percent inactivation of viruses. CT values between the
						indicated pH values may be determined by linear interpolation CT values between
						the indicated temperatures of different tables may be determined by linear
						interpolation If no interpolation is used, use the
						CT99.9 value at the lower temperature, and at the higher
						pH.
TABLE 14G-CT VALUES (CT99.9)
						FOR 99.9 PERCENT INACTIVATION OF
GIARDIA LAMBLIA
CYSTS BY
						CHLORINE DIOXIDE AND OZONE1, 2
Degrees Celsius
<=1
5
10
15
20
>=25
Chlorine
								  dioxide
63
26
23
19
15
11
Ozone
2.9
1.9
1.4
0.95
0.72
0.48
1 These CT values achieve
						greater than a 99.99 percent inactivation of viruses. CT values between the
						indicated temperatures may be determined by linear interpolation. If no
						interpolation is used, use the CT99.9 value at the lower
						temperature for determining CT99.9 values between
						indicated temperatures.
2 The use of these alternative
						disinfectants shall be approved in accordance with the provisions of section
						5-1.22 
						of this Subpart.
Click
						to view image
Click
						to view image
Click
						to view image
Click
						to view image
TABLE 15-ENTRY POINT DISINFECTANT MONITORING FREQUENCY
						FOR SYSTEMS USING CHEMICAL DISINFECTION1
Water system source type
Population served
Samples per
								  day4
Surface water or ground water under the direct
								  influence of surface water (GWUDI)2,3
Up to 500 501 - 1,000 1,001 - 2,500 2,501 - 3,300
								  > 3,300
1 2 3 4 Continuous monitoring
								  required5
Ground water system or ground water source required
								  to provide 4-log virus treatment and process compliance
								  monitoring6,7,8
<=3,300 > 3,300
19 Continuous monitoring
								  required5
Ground Water System or ground water source with
								  other than 4-log virus treatment
Any
19
1 See also Table 15A for
						distribution system disinfectant residual sampling locations and frequency
						depending on disinfectant used.
2 If at any time chlorine
						residual concentration falls below 0.2 mg/L at the entry point for a surface
						water or GWUDI system, the system must collect and analyze a grab sample every
						four hours until the chlorine residual concentration is again equal to or
						greater than 0.2 mg/L.
3 Entry point samples
						collected at Surface Water or GWUDI systems.
4 The day's grab samples may
						not be conducted at the same time.
5 If there is a failure in the
						continuous monitoring equipment, grab samples, every four hours, may be
						conducted in lieu of continuous monitoring, but for no more than five working
						days (14 working days for ground water systems) following the failure of the
						equipment.
6 If at any time the
						disinfectant concentration at a ground water system falls below the minimum
						required in the process compliance monitoring plan approved by the State, the
						system must collect and analyze a grab sample every four hours until the
						disinfectant residual concentration is again at or above minimum required
						levels, without exceeding other applicable concentration requirements in Table
						3A.
7 Any ground water system
						required to provide 4-log virus treatment because of fecal contamination of the
						source or because of significant deficiencies in system operation, and using
						chemical disinfection, must demonstrate minimum disinfectant residual at a
						location that demonstrates adequate concentration to provide the required
						treatment at the first customer during peak flow according to the sampling plan
						developed for the system. These samples to confirm the minimum disinfection
						residual are to be collected at the frequency in this table.
8 Lowest daily concentration
						must be recorded on operation report.
9 A minimum of one
						disinfectant residual concentration must be recorded on operation report every
						day.
TABLE 15A-DISINFECTANT RESIDUAL MINIMUM
						DISTRIBUTION SYSTEM MONITORING REQUIREMENTS FOR SYSTEMS USING CHEMICAL
						DISINFECTION
Disinfectant
Type
								  of water system
Routine
								  monitoring
Chlorine
Community and
								  nontransient
Sample at the same time and same points in
Chloramines
noncommunity
the
								  distribution system as total coliform
sampling.1
Chlorine
								  dioxide2
Community,
								  nontransient
Daily sample at the entrance to the
noncommunity and transient
distribution
								  system3
noncommunity
1 Community Water Systems
						using surface water or ground water under the direct influence of surface water
						may use heterotrophic plate count results of equal to or less than 500 colonies
						per milliliter as equivalent to a free chlorine residual as outlined in table
						11, footnote 5, in lieu of taking separate samples for disinfection
						residuals.
2 Monitoring is required if
						chlorine dioxide is used for either oxidation or disinfection.
3 If the Maximum Residual
						Disinfectant Level (MRDL) of 0.8 mg/L is exceeded, the system must take three
						samples in the distribution system on the following day. If chlorine dioxide or
						chloramines are used to maintain a disinfectant residual in the distribution
						system, or if chlorine is used and there are no rechlorination stations, the
						system must take three samples as close to the first customer as possible, at
						intervals of at least six hours. If chlorine is used and there is a
						rechlorination station, the system must take one sample as close to the first
						customer as possible, one sample representing average residence time, and one
						sample representing maximum residence time.
TABLE 16-ADDITIONAL CONTAMINANTS FOR WHICH
						REPORTING IS REQUIRED PURSUANT TO SECTION
						5-1.72(e)-(h) 
						OF THIS SUBPART
Contaminant name
2,4-dinitrotoluene
2,6-dinitrotoluene
DCPA monoacid
DCPA di acid
4.4'-DDE
EPTC
Molinate
MTBE
Nitrobenzene
Terbacil
Acetochlor
Perchlorate
Diuron
Linuron
Proneton
2,4,6-trichlorophenol
2,4-dichlorophenol
2,4-dinitrophenol
2-methyl-1-phenol
Alachlor ESA
1,2-diphenylhydrazine
Diazinon
Disulfoton
Fonofos
Terbufos
Aeromonas Hydrophilia
Polonium-210
RDX
Algae and toxins
Echoviruses
Coxsackie viruses
Helicobacter pylori
Microsporidia
Caliciviruses
Adenoviruses
Lead - 210
Napthalene
TABLE 17-INFORMATION COLLECTION RULE
						CONTAMINANT
REPORTING REQUIREMENTS
Contaminant
Reporting requirements for finished
								  water
Total Trihalomethanes (chloroform,
								  bronodichloromethane, dibronochloromethane, and bronoform)
Report as a group if detected
Haleocetic acids (mono-,di-,and trichloroacetic
								  acid, and mono- and di-bronoacetic acid)
Report as a group if detected
Haloacetilenitriles
								  (dichloro-,trichloro-,bromochloro-, and dibromoacetonitrile)
Report as a group if detected
Haloketones (1,1-dichloropropanone and
								  1,1,1-trichloropropanine)
Report as a group if detected
Chloropicrin
Reporting required if detected
Chloral Hydrate
Reporting required if detected
Total Organic Halides
Reporting required if detected
Disinfectant residual
Reporting required if detected
Cyanogen Chloride
Report if detected and treatment plant uses
								  Chloramines
Chlorate
Report if detected and treatment plant uses
								  Hypochlorite solutions
Bromate, Aldehydes
Report if detected and treatment plant uses
								  Ozone
Chlorine Dioxide residual, Chlorite, Chlorate,
								  Bromate, Aldehydes
Report if detected and treatment plant uses
								  Chlorine Dioxide
Total coliforms
Report if detected
Fecal coliforms or
Escherichia
								  coli
Report if detected
Gardia
Report if detected
Total culturable viruses
Report if detected