reglab/statecodes huggingface dataset:
Michigan Administrative Code › Department - Environmental Quality › Drinking Water And Municipal Assistance Division › Supplying Water to the Public › Part 6 - STATE DRINKING WATER STANDARDS AND ANALYTICAL › Section R. 325.10604g - MCLs for per- and polyfluoroalkyl substances

Current through Vol. 24-12, July 15, 2024
Rule 604g.
(1) The
				  maximum contaminant levels and effective dates for per- and polyfluoroalkyl
				  substances in table 1 of this rule apply to community and nontransient
				  noncommunity water supplies.
Table 1 MCLs for per and polyfluoroalkyl substances
Contaminant
Maximum Contaminant Level in ng/l
Effective Date
Hexafluoropropylene oxide dimer acid
								  (HFPO-DA)
370
[effective date of this rule]
Perfluorobutane sulfonic acid (PFBS)
420
[effective date of this rule]
Perfluorohexane sulfonic acid (PFHxS)
51
[effective date of this rule]
Perfluorohexanoic acid (PFHxA)
400,000
[effective date of this rule]
Perfluorononanoic acid (PFNA)
6
[effective date of this rule]
Perfluorooctane sulfonic acid (PFOS)
16
[effective date of this rule]
Perfluorooctanoic acid (PFOA)
8
[effective date of this rule]
(2)
				  Compliance with the MCLs in table 1 of this rule must be determined based on
				  the analytical results obtained at each sampling point. If 1 sampling point is
				  in violation of an MCL, then the supply is in violation of the MCL. All of the
				  following provisions apply:
(a) For supplies
				  monitoring more than once per year, compliance with the MCL is determined by a
				  running annual average at each sampling point.
(b) Supplies monitoring annually whose sample
				  result exceeds an MCL in table 1 of this rule shall begin quarterly sampling.
				  Compliance with the MCL must be based on the running annual average. For the
				  purpose of calculating the running annual average, the initial exceedance must
				  be the result for the first quarter. If the department requires a confirmation
				  sample under R 325.10717d(12), then the average of the initial exceedance and
				  the confirmation sample must be the result for the first quarter, unless the
				  department determines a sample should be excluded per R 325.10717d(12). The
				  supply shall not be in violation of the MCL until it has completed 1 year of
				  quarterly sampling.
(c) If any
				  sample result causes the running annual average to exceed the MCL at any
				  sampling point, then the supply is out of compliance with the MCL
				  immediately.
(d) If a supply fails
				  to collect the required number of samples, then compliance must be based on the
				  total number of samples collected.
(e) If a sample result is less than the
				  reporting limit, then zero must be used to calculate the annual
				  average.
Michigan Administrative Code › Department - Environmental Quality › Drinking Water And Municipal Assistance Division › Supplying Water to the Public › Part 6 - STATE DRINKING WATER STANDARDS AND ANALYTICAL › Section R. 325.10605 - Analytical methods and sample collection procedures; incorporation by reference

Current through Vol. 24-12, July 15, 2024
Rule 605.
The analytical methods and sample collection procedures
					 used in the determination of compliance with the state drinking water standards
					 for microbiological contaminants, fecal indicators, inorganic chemical
					 contaminants, organic chemical contaminants, including maximum TTHM potential,
					 turbidity, disinfectant residuals, disinfection byproducts, disinfection
					 byproduct precursors, temperature, pH, conductivity, alkalinity, bromide,
					 specific ultraviolet absorbance, total organic carbon, and radioactivity which
					 are contained in 40 CFR parts 141 and 143, 2014, and which have been
					 promulgated by the United States EPA under authority of the safe drinking water
					 act of 1974 ( public law 93-523 ), the safe drinking water act amendments of
					 1986 ( public law 99-339 ), and the safe drinking water act amendments of 1996
					 ( public law
					 104-182 ),
					 42 USC
					 300 f et seq. are adopted by reference in
					 these rules. The adopted material is contained in Title 40 CFR parts 136 to 149
					 and is available from the superintendent of documents at the address in
					 R
					 325.10116(b) for a cost of $67.00 at
					 the time of adoption of these rules. The adopted material is available for
					 inspection from the offices of the department at the address in
					 R
					 325.10116(a) or available on the
					 Internet at http://www.ecfr.gov/.
Michigan Administrative Code › Department - Environmental Quality › Drinking Water And Municipal Assistance Division › Supplying Water to the Public › Part 6 - STATE DRINKING WATER STANDARDS AND ANALYTICAL › Section R. 325.10606 - Alternate analytical techniques

Current through Vol. 24-12, July 15, 2024
Rule 606. With the written permission of the department,
					 concurred in by the administrator of the United States EPA, a public water
					 supply owner may employ an alternate analytical technique. The use of the
					 alternate analytical technique shall not decrease the frequency of monitoring
					 required by these rules.
Michigan Administrative Code › Department - Environmental Quality › Drinking Water And Municipal Assistance Division › Supplying Water to the Public › Part 6 - STATE DRINKING WATER STANDARDS AND ANALYTICAL › Section R. 325.10610 - MCLs for disinfection byproducts

Current through Vol. 24-12, July 15, 2024
Rule 610.
(1) Both
				  of the following apply to bromate and chlorite:
(a) The maximum contaminant levels (MCLs) for
				  bromate and chlorite are as follows:
Disinfection byproduct
MCL (mg/l)
Bromate
0.010
Chlorite
1.0
(b)
				  The best available technologies, treatment techniques, or other means available
				  for achieving compliance with the MCLs are as follows:
Disinfection byproduct
Best available technology.
Bromate
Control of ozone treatment process to reduce
								  production of bromate.
Chlorite
Control of treatment processes to reduce
								  disinfectant demand and control of disinfection treatment processes to reduce
								  disinfectant levels.
Michigan Administrative Code › Department - Environmental Quality › Drinking Water And Municipal Assistance Division › Supplying Water to the Public › Part 6 - STATE DRINKING WATER STANDARDS AND ANALYTICAL › Section R. 325.10610a - Maximum residual disinfectant levels

Current through Vol. 24-12, July 15, 2024
Rule 610a.
(1)
				  Maximum residual disinfectant levels (MRDLS) are as follows:
Disinfectant residual
MRDL (mg/l)
Chlorine
4.0 as chlorine
Chloramines
4.0 as chlorine
Chlorine dioxide
0.8 as chlorine dioxide
(2) The best available technologies,
				  treatment techniques, or other means available for achieving compliance with
				  the maximum residual disinfectant levels under subrule (1) of this rule are
				  control of treatment processes to reduce disinfectant demand and control of
				  disinfection treatment processes to reduce disinfectant levels.
Michigan Administrative Code › Department - Environmental Quality › Drinking Water And Municipal Assistance Division › Supplying Water to the Public › Part 6 - STATE DRINKING WATER STANDARDS AND ANALYTICAL › Section R. 325.10610b - Disinfectant residuals, disinfection byproducts, and disinfection byproduct precursors; compliance requirements

Current through Vol. 24-12, July 15, 2024
Rule 610b.
(1)
				  This rule,
				  R 325.10610c,
				  R 325.10719e, and
				  R 325.10719f apply to community
				  water supplies and nontransient noncommunity water supplies that add a chemical
				  disinfectant to the water in any part of the drinking water treatment process
				  and to transient noncommunity water supplies adding chlorine dioxide. These
				  public water supplies are considered "water supplies" or "supplies" in this
				  rule. Transient noncommunity water supplies are only required to comply with
				  the chlorine dioxide requirements. Compliance with this rule is based on all of
				  the following:
(a) All samples taken under
				  this rule,
				  R 325.10610c,
				  R 325.10719e, and
				  R 325.10719f and analyzed under
				  R 325.10605, shall be included in
				  determining compliance with the maximum contaminant levels and maximum residual
				  disinfectant levels of
				  R
				  325.10610 and
				  R
				  325.10610a.
(b) If, during the first year of monitoring
				  under
				  R 325.10719e, any individual
				  quarter's average will cause the running annual average of that water supply to
				  exceed the MCL for total trihalomethanes, haloacetic acids (five), or bromate;
				  or the MRDL for chlorine or chloramine, the supply is out of compliance at the
				  end of that quarter.
(c) A supply
				  is in violation of the state drinking water standard if compliance is based on
				  4 consecutive quarters of monitoring and the average of samples, or quarterly
				  averages, or running annual averages, whichever is applicable, exceeds the
				  state drinking water standard, unless otherwise noted in this rule.
(d) Where compliance is based on a running
				  annual average of monthly or quarterly samples or averages and the supply fails
				  to complete 4 consecutive quarters or 12 consecutive months of monitoring,
				  whichever is applicable, compliance with the MCL for the last 4 quarter
				  compliance period is based on an average of the available data unless otherwise
				  stated in this rule.
Michigan Administrative Code › Department - Environmental Quality › Drinking Water And Municipal Assistance Division › Supplying Water to the Public › Part 6 - STATE DRINKING WATER STANDARDS AND ANALYTICAL › Section R. 325.10611 - Filtration and disinfection

Current through Vol. 24-12, July 15, 2024
Rule 611.
(1) A
				  supplier of a public water system shall comply with R 325.10807, R 325.10808, R
				  325.10812, R 325.10813, R 325.10816, R 325.10817, R 325.10818, R 325.10819, R
				  325.10820, and R 325.10822, shall demonstrate a safe microbiological water
				  quality history, and may be required to demonstrate stability in other
				  measurements of water quality; or the supplier shall provide complete
				  treatment.
(2) The department may
				  grant a deviation from subrule (1) of this rule if the supplier can demonstrate
				  that the system is capable of producing finished water that meets state
				  drinking water standards applicable to systems using only ground water not
				  under the direct influence of surface water.
(3) Suppliers of subpart H systems shall
				  comply with the treatment techniques of this rule, R 325.10611a, R 325.10611b,
				  R 325.10611c, the sampling requirements of R 325.10720, the reporting and
				  recordkeeping requirements of R 325.10720a and R 325.11506, except where noted,
				  and the disinfection profiling and benchmarking requirements in R 325.10722.
				  The treatment technique requirements consist of installing and properly
				  operating water treatment processes that reliably achieve all of the following
				  applicable removal or inactivation percentages between a point where the raw
				  water is not subject to recontamination by surface water runoff and a point
				  downstream before or at thefirst customer:
(a)
				  Not less than 99.9% (3 log) inactivation or the removal of giardia lamblia
				  cysts and not less than 99.99% (4 log) inactivation or the removal of
				  viruses.
(b) A 99% (2 log) removal
				  of cryptosporidium oocysts for systems serving 10,000 or more people. This
				  subdivision applies to subpart H systems serving 10,000 or more people until
				  December 31, 2004 and applies to all subpart H systems beginning January 1,
				  2005.
Michigan Administrative Code › Department - Environmental Quality › Drinking Water And Municipal Assistance Division › Supplying Water to the Public › Part 6 - STATE DRINKING WATER STANDARDS AND ANALYTICAL › Section R. 325.10611a - Filtration and disinfection; disinfection

Current through Vol. 24-12, July 15, 2024
Rule 611a.
(1)
				  Subpart H supplies shall provide sufficient disinfectant contact time before
				  the water enters the distribution system to assure adequate
				  disinfection.
(2) Subpart H
				  supplies shall provide disinfection treatment achieving all of the following
				  conditions:
(a) The disinfection treatment
				  shall be sufficient to ensure that the total treatment processes of that system
				  achieve the standards set forth in R 325.10611 (3) (a).
(b) The residual disinfectant concentration
				  in the water entering the distribution system shall not be less than 0.2
				  milligrams per liter for more than 4 hours.
(c) The residual disinfectant concentration
				  in the distribution system, measured as total chlorine, free available
				  chlorine, combined chlorine, or chlorine dioxide shall not be undetectable in
				  more than 5% of the samples each month for any 2 consecutive months that the
				  supply serves water to the public. Water in the distribution system that has a
				  heterotrophic bacteria concentration less than or equal to 500 per milliliter,
				  measured as heterotrophic plate count (HPC), is considered to have a detectable
				  disinfectant residual for purposes of determining compliance with this
				  subdivision.
(d) If the department
				  determines, based on site specific considerations, that a supply does not have
				  means for having a sample transported and analyzed for HPC and that the supply
				  is providing adequate disinfection in the distribution system, then the
				  requirements of subdivision (c) of this subrule do not apply.
Michigan Administrative Code › Department - Environmental Quality › Drinking Water And Municipal Assistance Division › Supplying Water to the Public › Part 6 - STATE DRINKING WATER STANDARDS AND ANALYTICAL › Section R. 325.10611b - Filtration and disinfection; filtration

Current through Vol. 24-12, July 15, 2024
Rule 611b.
(1)
				  Subpart H supplies shall comply with all of the following filtration
				  requirements, as applicable:
For a supply using...
(i) The turbidity level of representative samples of
								a supply's filtered water shall at no time exceed...
(ii) Not less than 95% of the measurements taken
								each month shall be less than or equal to...
(a) Conventional, direct, or membrane filtration
1 ntu
0.3 ntu
(b) Slow sand or diatomaceous earth filtration
5 ntu
1 ntu
(c) An alternative filtration technology approved by
								the department, based on the demonstration described in subrule (3) of this
								rule.
The department-set turbidity level, not to exceed 5
								ntu, based on the demonstration described in subrule (3) of this rule.
The department-set turbidity level, not to exceed 1
								ntu, based on the demonstration described in subrule (3) of this rule.
(2) A supply using lime softening, where the
				  final pH exceeds 8.3, may acidify representative samples before turbidity
				  analysis using a protocol approved by the department. The approved protocol
				  shall require the use of a concentrated acid in sufficient quantities to lower
				  the pH to less than 8.3, dissolve only calcium carbonate and magnesium
				  hydroxide, and not to dilute the representative sample.
(3) A public water supply may use a
				  filtration technology not listed in subrule (1) (a) or (b) of this rule if the
				  supply demonstrates to the department, using pilot plant studies or other
				  means, that the alternative filtration technology, in combination with
				  disinfection treatment that meets the requirements of R 325.10611a (2),
				  consistently achieves the removal or inactivation percentages in R 325.10611
				  (3), and the department approves the use of the filtration technology. For each
				  approval, the department will set turbidity performance requirements that the
				  supply shall meet not less than 95% of the time and the supply shall not
				  exceed, at any time, at a level in subrule (1) (c) of this rule that
				  consistently achieves the removal or inactivation percentages in R 325.10611
				  (3).
Michigan Administrative Code › Department - Environmental Quality › Drinking Water And Municipal Assistance Division › Supplying Water to the Public › Part 6 - STATE DRINKING WATER STANDARDS AND ANALYTICAL › Section R. 325.10611c - Filtration and disinfection; filter backwash recycling treatment technique

Current through Vol. 24-12, July 15, 2024
Rule 611c. A subpart H system that employs conventional
					 filtration or direct filtration treatment and that recycles spent filter
					 backwash water, thickener supernatant, or liquids from dewatering processes
					 shall return these flows through the processes of a system's existing
					 conventional or direct filtration system as defined in R 325.10103 and R
					 325.10104, or at an alternate location approved by the department. If capital
					 improvements are required to modify the recycle location to meet this
					 requirement, then all capital improvements shall be completed not later than
					 June 8, 2006.
Michigan Administrative Code › Department - Environmental Quality › Drinking Water And Municipal Assistance Division › Supplying Water to the Public › Part 6 - STATE DRINKING WATER STANDARDS AND ANALYTICAL › Section R. 325.10611d - Enhanced treatment for Cryptosporidium; requirements

Current through Vol. 24-12, July 15, 2024
Rule 611d.
(1) The
				  requirements in this rule, R 325.10611n, and R 325.10720b to R 325.10720e
				  establish or extend treatment technique requirements instead of maximum
				  contaminant levels for Cryptosporidium. These requirements are in addition to
				  requirements for filtration and disinfection in R 325.10611 to R 325.10611c, R
				  325.10720 to R 325.10720a, and R 325.10722.
(2) The requirements of this rule, R
				  325.10611n, and R 325.10720b to R 325.10720e apply to all subpart H supplies,
				  which are community and noncommunity water supplies supplied by a surface water
				  source and community and noncommunity water supplies supplied by a groundwater
				  source under the direct influence of surface water (GWUDI). These public water
				  supplies are considered "water supplies" or "supplies" in this rule, R
				  325.10611d to R 325.10611n, and R 325.10720b to R 325.10720e. Both of the
				  following apply to this rule:
(a) Wholesale
				  supplies, as defined in R 325.10109, shall comply with the requirements of this
				  rule, R 325.10611d to R 325.10611n, and R 325.10720b to R 325.10720e based on
				  the population of the largest supply in the combined distribution
				  system.
(b) The requirements of
				  this rule, R 325.10611n, and R 325.10720b to R 325.10720e apply to subpart H
				  supplies required by these rules to provide filtration treatment, whether or
				  not the supply is currently operating a filtration system.
Michigan Administrative Code › Department - Environmental Quality › Drinking Water And Municipal Assistance Division › Supplying Water to the Public › Part 6 - STATE DRINKING WATER STANDARDS AND ANALYTICAL › Section R. 325.10611e - Enhanced treatment for Cryptosporidium; treatment technique; bin classification

Current through Vol. 24-12, July 15, 2024
Rule 611e.
(1)
				  Following completion of the initial round of source water monitoring required
				  under 40 CFR §141.701 (a), as adopted by reference in R 325.10720b,
				  subpart H supplies that are subject to R 325.10611d shall calculate an initial
				  Cryptosporidium bin concentration for each plant for which monitoring was
				  required. These public water supplies are also considered "water supplies" or
				  "supplies" in this rule. Calculation of the bin concentration shall use the
				  Cryptosporidium results reported under 40 CFR §141.701 (a) and shall
				  follow the procedures in subrule (2) of this rule.
(2) Supplies shall use the following criteria
				  to determine bin classification:
(a) For
				  supplies that collect a total of not less than 48 samples, the bin
				  concentration is equal to the arithmetic mean of all sample
				  concentrations.
(b) For supplies
				  that collect a total of not less than 24 samples, but not more than 47 samples,
				  the bin concentration is equal to the highest arithmetic mean of all sample
				  concentrations in any 12 consecutive months during which Cryptosporidium
				  samples were collected.
(c) For
				  supplies that serve fewer than 10,000 people and monitor for Cryptosporidium
				  for only 1 year, that is, collect 24 samples in 12 months, the bin
				  concentration is equal to the arithmetic mean of all sample
				  concentrations.
(d) For supplies
				  with plants operating only part of the year that monitor fewer than 12 months
				  per year under 40 CFR §141.701 (e), as adopted by reference in R
				  325.10720b, the bin concentration is equal to the highest arithmetic mean of
				  all sample concentrations during a year of Cryptosporidium
				  monitoring.
(e) If the monthly
				  Cryptosporidium sampling frequency varies, supplies shall first calculate a
				  monthly average for each month of monitoring. Supplies shall then use these
				  monthly average concentrations, rather than individual sample concentrations,
				  in the applicable calculation for bin classification in subdivisions (a) to (d)
				  of this subrule.
Michigan Administrative Code › Department - Environmental Quality › Drinking Water And Municipal Assistance Division › Supplying Water to the Public › Part 6 - STATE DRINKING WATER STANDARDS AND ANALYTICAL › Section R. 325.10611f - Enhanced treatment for Cryptosporidium; treatment technique; additional Cryptosporidium treatment requirements

Current through Vol. 24-12, July 15, 2024
Rule 611f.
(1)
				  Subpart H supplies are also considered "water supplies" or "supplies" in this
				  rule. Subpart H supplies that are subject to R 325.10611d shall provide the
				  level of additional treatment for Cryptosporidium specified in the following
				  table based on their bin classification as determined under R 325.10611e and
				  according to the schedule in R 325.10611g:
If the supply bin classification is ...
And the supply uses the following
								filtration treatment in full compliance with R 325.10611 to R 325.10611c, R
								325.10720 to R 325.10720a, and R 325.10722, as applicable, then the additional
								Cryptosporidium treatment requirements are ...
Conventional filtration or membrane filtration
								treatment (including softening)
Direct filtration
Slow sand or diatomaceous earth filtration
Alternative filtration technologies approved by the
								department under R 325.10611b (3)
Bin 1
No additional treatment
No additional treatment
No additional treatment
No additional treatment
Bin 2
1-log treatment
1.5-log treatment
1-log treatment
Note 1
Bin 3
2-log treatment
2.5-log treatment
2-log treatment
Note 2
Bin 4
2.5-log treatment
3-log treatment
2.5-log treatment
Note 3
Note 1: As determined by the department such that the total
					 Cryptosporidium removal and inactivation is not less than 4.0-log.
Note 2: As determined by the department such that the total
					 Cryptosporidium removal and inactivation is not less than 5.0-log.
Note 3: As determined by the department such that the total
					 Cryptosporidium removal and inactivation is not less than 5.5-log.
(2) All of the following
				  provisions apply to microbial toolbox options:
(a) Supplies shall use 1 or more of the
				  treatment and management options listed in R 325.10611h, termed the microbial
				  toolbox, to comply with the additional Cryptosporidium treatment required in
				  subrule (1) of this rule.
(b)
				  Supplies classified in Bin 3 and Bin 4 shall achieve not less than 1-log of the
				  additional Cryptosporidium treatment required under subrule (1) of this rule
				  using either 1 or a combination of the following: bag filters, bank filtration,
				  cartridge filters, chlorine dioxide, membranes, ozone, or UV, as described in R
				  325.10611i to R 325.10611m.
Michigan Administrative Code › Department - Environmental Quality › Drinking Water And Municipal Assistance Division › Supplying Water to the Public › Part 6 - STATE DRINKING WATER STANDARDS AND ANALYTICAL › Section R. 325.10611g - Enhanced treatment for Cryptosporidium; treatment technique; schedule for compliance with Cryptosporidium treatment requirements

Current through Vol. 24-12, July 15, 2024
Rule 611g.
(1)
				  Following initial bin classification under R 325.10611e (3), Subpart H supplies
				  that are subject to R 325.10611d shall provide the level of treatment for
				  Cryptosporidium required under R 325.10611f according to the schedule in
				  subrule (2) of this rule.
(2)
				  Cryptosporidium treatment compliance dates are listed in the following table:
Table 1 Cryptosporidium Treatment Compliance Dates
Subpart H supplies that serve &
Shall comply with Cryptosporidium treatment
								requirements not later than & *
(a) Not fewer than 100,000 people.
(i) April 1, 2012.
(b) From 50,000 to 99,999 people.
(i) October 1, 2012.
(c) From 10,000 to 49,999 people.
(i) October 1, 2013.
(d) Fewer than 10,000 people.
(i) October 1, 2014.
* The department may allow up to an additional 2 years for
					 complying with the treatment requirement for supplies making capital
					 improvements.
(3) If the
				  bin classification for a supply changes following the second round of source
				  water monitoring, as determined under R 325.10611e (4), the supply shall
				  provide the level of treatment for Cryptosporidium required under R 325.10611f
				  on a schedule the department approves.
Michigan Administrative Code › Department - Environmental Quality › Drinking Water And Municipal Assistance Division › Supplying Water to the Public › Part 6 - STATE DRINKING WATER STANDARDS AND ANALYTICAL › Section R. 325.10611j - Enhanced treatment for Cryptosporidium; microbial toolbox; pre-filtration treatment toolbox components

Current through Vol. 24-12, July 15, 2024
Rule 611j.
(1)
				  Presedimentation is a pre-filtration treatment toolbox component. Subpart H
				  supplies that are subject to R 325.10611d receive 0.5-log Cryptosporidium
				  treatment credit for a presedimentation basin during any month the process
				  meets all of the following criteria:
(a) The
				  presedimentation basin shall be in continuous operation and shall treat the
				  entire plant flow taken from a surface water or GWUDI source.
(b) The subpart H supply shall continuously
				  add a coagulant to the presedimentation basin.
(c) The presedimentation basin shall achieve
				  either of the following performance criteria:
(i) Demonstrates not less than 0.5-log mean
				  reduction of influent turbidity. This reduction shall be determined using daily
				  turbidity measurements in the presedimentation process influent and effluent
				  and shall be calculated as follows:log10 (monthly mean of daily influent
				  turbidity) - log10 (monthly mean of daily effluent turbidity).
(ii) Complies with department-approved
				  performance criteria that demonstrate not less than 0.5-log mean removal of
				  micron-sized particulate material through the presedimentation
				  process.
Michigan Administrative Code › Department - Environmental Quality › Drinking Water And Municipal Assistance Division › Supplying Water to the Public › Part 6 - STATE DRINKING WATER STANDARDS AND ANALYTICAL › Section R. 325.10611k - Enhanced treatment for Cryptosporidium; microbial toolbox; treatment performance toolbox components

Current through Vol. 24-12, July 15, 2024
Rule 611k.
(1)
				  Combined filter performance is a treatment performance toolbox component.
				  Subpart H supplies that are subject to R 325.10611d and that use conventional
				  filtration treatment or direct filtration treatment receive an additional
				  0.5-log Cryptosporidium treatment credit during any month the subpart H supply
				  meets the criteria in this subrule. Combined filter effluent (CFE) turbidity
				  shall be less than or equal to 0.15 NTU in not less than 95% of the
				  measurements. Turbidity shall be measured as described in R 325.10605 and R
				  325.10720 (2).
(2) Individual
				  filter performance is a treatment performance toolbox component. Compliance
				  with the criteria in this subrule shall be based on individual filter turbidity
				  monitoring as described in R 325.10720 (2) (c) to (d). Subpart H supplies using
				  conventional filtration treatment or direct filtration treatment receive
				  0.5-log Cryptosporidium treatment credit, which can be in addition to the
				  0.5-log credit under subrule (1) of this rule, during any month the supply
				  meets all of the following criteria:
(a) The
				  filtered water turbidity for each individual filter shall be less than or equal
				  to 0.15 NTU in not less than 95% of the measurements recorded each
				  month.
(b) No individual filter may
				  have a measured turbidity greater than 0.3 NTU in 2 consecutive measurements
				  taken 15 minutes apart.
(c) A
				  supply that has received treatment credit for individual filter performance and
				  fails to meet the requirements of subdivision (a) or (b) of this subrule during
				  any month does not receive a treatment technique violation under R 325.10611f
				  (3) if the department determines both of the following:
(i) The failure was due to unusual and
				  short-term circumstances that could not reasonably be prevented through
				  optimizing treatment plant design, operation, and maintenance.
(ii) The supply has experienced not more than
				  2 such failures in any calendar year.
Michigan Administrative Code › Department - Environmental Quality › Drinking Water And Municipal Assistance Division › Supplying Water to the Public › Part 6 - STATE DRINKING WATER STANDARDS AND ANALYTICAL › Section R. 325.10611m - Enhanced treatment for Cryptosporidium; microbial toolbox; inactivation toolbox components

Current through Vol. 24-12, July 15, 2024
Rule 611m.
(1)
				  Calculation of CT values is an inactivation toolbox component. All of the
				  following apply to CT calculation of subpart H supplies that are subject to R
				  325.10611d:
(a) CT is the product of the
				  disinfectant contact time (T, in minutes) and disinfectant concentration (C, in
				  milligrams per liter). Subpart H supplies with treatment credit for chlorine
				  dioxide or ozone under subrule (2) or (3) of this rule shall calculate CT at
				  least once each day, with both C and T measured during peak hourly flow as
				  specified in R 325.10605.
(b)
				  Subpart H supplies with several disinfection segments in sequence may calculate
				  CT for each segment, where a disinfection segment is defined as a treatment
				  unit process with a measurable disinfectant residual level and a liquid volume.
				  Under this approach, supplies shall add the Cryptosporidium CT values in each
				  segment to determine the total CT for the treatment plant.
Michigan Administrative Code › Department - Environmental Quality › Drinking Water And Municipal Assistance Division › Supplying Water to the Public › Part 6 - STATE DRINKING WATER STANDARDS AND ANALYTICAL › Section R. 325.10611n - Enhanced treatment for Cryptosporidium; requirements to respond to significant deficiencies identified in sanitary surveys performed by U.S.environmental protection agency (EPA)

Current through Vol. 24-12, July 15, 2024
Rule 611n.
(1) A
				  sanitary survey is defined in R 325.10108 (a).Community or noncommunity water
				  supplies are also considered "water supplies" or "supplies" in this
				  rule.
(2) For the purposes of this
				  rule, a significant deficiency includes a defect in design, operation, or
				  maintenance, or a failure or malfunction of the sources, treatment, storage, or
				  distribution system that EPA determines to be causing, or has the potential for
				  causing the introduction of contamination into the water delivered to
				  consumers.
(3) For sanitary surveys
				  performed by EPA, water supplies shall respond in writing to significant
				  deficiencies identified in sanitary survey reports not later than 45 days after
				  receipt of the report, indicating how and on what schedule the supply will
				  address significant deficiencies noted in the survey.
(4) Supplies shall correct significant
				  deficiencies identified in sanitary survey reports according to the schedule
				  approved by EPA, or if there is no approved schedule, according to the schedule
				  reported under subrule (3) of this rule if those deficiencies are within the
				  control of the supply.
Michigan Administrative Code › Department - Environmental Quality › Drinking Water And Municipal Assistance Division › Supplying Water to the Public › Part 6 - STATE DRINKING WATER STANDARDS AND ANALYTICAL › Section R. 325.10612b - Groundwater supply rules; treatment technique violations for groundwater supplies

Current through Vol. 24-12, July 15, 2024
Rule 612b.
(1) A
				  groundwater supply subject to R 325.10612 with a significant deficiency is in
				  violation of the treatment technique requirement if, within 120 days (or
				  earlier if directed by the department) of receiving written notice from the
				  department of the significant deficiency, either of the following conditions
				  exist:
(a) The groundwater supply does not
				  complete corrective action under any applicable department plan review
				  processes or other department guidance and direction, including department
				  specified interim actions and measures.
(b) The groundwater supply is not in
				  compliance with a department-approved corrective action plan and
				  schedule.
Michigan Administrative Code › Department - Environmental Quality › Drinking Water And Municipal Assistance Division › Supplying Water to the Public › Part 7 - SURVEILLANCE, INSPECTION, AND MONITORING › Section R. 325.10701 - Purpose

Current through Vol. 24-12, July 15, 2024
Rule 701. The purpose of this part is to specify inspection
					 and surveillance activities by the department to assure compliance by a public
					 water supply with the act and these rules; to prescribe certain monitoring
					 requirements and procedures for suppliers of water in accordance with the act
					 and the federal act; and to establish a schedule of fees for the collection and
					 analysis of water samples by the department as required by the
					 act.
Michigan Administrative Code › Department - Environmental Quality › Drinking Water And Municipal Assistance Division › Supplying Water to the Public › Part 7 - SURVEILLANCE, INSPECTION, AND MONITORING › Section R. 325.10702 - Evaluation of adequacy and condition of public water supplies; sanitary surveys

Current through Vol. 24-12, July 15, 2024
Rule 702.
(1)
				  Under section 3 of the act, the department shall make sanitary surveys, onsite
				  inspections, surveillance observations, or special purpose investigations for
				  the purpose of evaluating the adequacy and condition of public water supplies
				  at a frequency which may be determined by the department.
(2) Based on the results of each sanitary
				  survey, the department shall determine whether the existing monitoring
				  frequency is adequate and what additional measures, if any, the supply shall
				  take to improve drinking water quality.
(3) Subpart H supplies shall undergo sanitary
				  surveys at least once every 3 years for community water supplies and at least
				  once every 5 years for noncommunity water supplies. The department may reduce
				  the frequency to at least once every 5 years for community water supplies that
				  have demonstrated outstanding performance.
(4) Groundwater supplies subject to
				  R 325.10612 shall undergo sanitary
				  surveys at either of the following frequencies:
(a) Community water supplies shall undergo a
				  sanitary survey at least once every 3 years, except the department may reduce
				  the frequency to once every 5 years if either of the following conditions
				  exists:
(i) The supply provides at least
				  4-log treatment of viruses (using inactivation, removal, or a department
				  approved combination of 4-log inactivation and removal) before or at the first
				  customer for all its groundwater sources.
(ii) The supply has an outstanding
				  performance record.
Michigan Administrative Code › Department - Environmental Quality › Drinking Water And Municipal Assistance Division › Supplying Water to the Public › Part 7 - SURVEILLANCE, INSPECTION, AND MONITORING › Section R. 325.10703 - On-site inspections and surveillance observations

Current through Vol. 24-12, July 15, 2024
Rule 703. On-site inspections and surveillance observations
					 of public water supplies may include, but are not necessarily limited to, a
					 review of all of the following:
(a)
				  Waterworks system physical facilities and equipment.
(b) Administration and
				  recordkeeping.
(c) Sampling
				  techniques, and monitoring activities for water quality.
(d) The maintenance program for the
				  waterworks system.
(e) The design
				  and operation of the waterworks system.
(f) Compliance with operator certification
				  requirements for treatment systems and distribution systems.
(g) A cross-connection control
				  program.
(h) The reliability of the
				  waterworks system.
(i) Security
				  measures provided to protect water quality and the operation of the waterworks
				  system.
Michigan Administrative Code › Department - Environmental Quality › Drinking Water And Municipal Assistance Division › Supplying Water to the Public › Part 7 - SURVEILLANCE, INSPECTION, AND MONITORING › Section R. 325.10704 - Coliform sampling

Current through Vol. 24-12, July 15, 2024
Rule 704.
(1)
				  Until March 31, 2016, community and noncommunity water systems shall collect
				  samples and cause analyses to be made for coliform bacteria to determine
				  compliance with the state drinking water standards. Beginning April 1, 2016,
				  the total coliform provisions of R 325.10704a to R 325.10704k are applicable,
				  with supplies required to begin regular monitoring at the same frequency as the
				  supply-specific frequency required on March 31, 2016.
(2) Until March 31, 2016, the department may
				  require samples to be collected and analyzed for coliform bacteria for type III
				  public water systems at a frequency as may be considered necessary by the
				  department. Beginning April 1, 2016, supplies shall comply with R
				  325.10704a(2).
(3) If any routine
				  or repeat sample is total coliform-positive, the supplier shall analyze that
				  total coliform-positive culture medium to determine if fecal coliforms are
				  present. Analysis for E. coli may be performed instead of fecal
				  coliforms.
(4) All of the following
				  provisions apply until March 31, 2016:
(a)
											R 325.10705 collection and analysis
				  of samples for coliform bacteria; community water systems.
(b)
											R 325.10706 collection and analysis
				  of samples for coliform bacteria; noncommunity water system.
(c)
											R 325.10709 special purpose and
				  invalidated samples.
Michigan Administrative Code › Department - Environmental Quality › Drinking Water And Municipal Assistance Division › Supplying Water to the Public › Part 7 - SURVEILLANCE, INSPECTION, AND MONITORING › Section R. 325.10704a - Total coliform; general

Current through Vol. 24-12, July 15, 2024
Rule 704a.
(1) All
				  of the following rules, also known in these rules as the total coliform rules,
				  include both maximum contaminant level and treatment technique requirements:
(b)R 325.10704b total coliform; analytical
				  methods.
(c)R 325.10704c total
				  coliform; general monitoring.
(d)R
				  325.10704d total coliform; routine monitoring; noncommunity; serving 1,000 or
				  fewer people; groundwater.
(e)R
				  325.10704e total coliform; routine monitoring; community; serving 1,000 or
				  fewer people; groundwater.
(f)R
				  325.10704f total coliform; routine monitoring; subpart H; serving 1,000 or
				  fewer people.
(g)R 325.10704g total
				  coliform; routine monitoring; community and noncommunity; serving more than
				  1,000 people.
(h)R 325.10704h total
				  coliform; repeat monitoring; E. coli.
(i)R 325.10704i total coliform; treatment
				  technique triggers; assessments.
(j)R 325.10704j total coliform;
				  violations.
(k)R 325.10704k total
				  coliform; reporting and recordkeeping.
Michigan Administrative Code › Department - Environmental Quality › Drinking Water And Municipal Assistance Division › Supplying Water to the Public › Part 7 - SURVEILLANCE, INSPECTION, AND MONITORING › Section R. 325.10704b - Total coliform; analytical methods

Current through Vol. 24-12, July 15, 2024
Rule 704b.
(1) All
				  of the following provisions apply to analytical methodology for compliance with
				  the total coliform rules in R 325.10704a.
(a)
				  The standard sample volume required for analysis, regardless of analytical
				  method used, is 100 milliliters.
(b) Supplies need only determine the presence
				  or absence of total coliforms and E. coli; a determination of density is not
				  required.
(c) The time from sample
				  collection to initiation of test medium incubation shall not exceed 30 hours.
				  Supplies are encouraged but not required to hold samples below 10 degrees
				  Celsius (50 degrees Fahrenheit) during transit.
(d) If water having residual chlorine
				  (measured as free, combined, or total chlorine) is to be analyzed, sufficient
				  sodium thiosulfate (Na2S2O3) shall be added to the sample bottle before
				  sterilization to neutralize the residual chlorine in the water sample.
				  Dechlorination procedures are addressed in Section 9060A.2 of Standard Methods
				  for the Examination of Water and Wastewater (20th and 21st editions), which is
				  adopted by reference in
				  R 325.10605.
(e) Supplies shall conduct total coliform and
				  E. coli analyses in accordance with the appropriate analytical methods adopted
				  by reference in
				  R 325.10605.
Michigan Administrative Code › Department - Environmental Quality › Drinking Water And Municipal Assistance Division › Supplying Water to the Public › Part 7 - SURVEILLANCE, INSPECTION, AND MONITORING › Section R. 325.10704d - Total coliform; routine monitoring; noncommunity; serving 1,000 or fewer people; groundwater

Current through Vol. 24-12, July 15, 2024
Rule 704d.
(1)
				  General total coliform rules routine monitoring requirements are all of the
				  following:
(a) This rule applies to
				  noncommunity water supplies using only ground water, except ground water under
				  the direct influence of surface water, as defined in
				  R
				  325.10105 and serving 1,000 or fewer people.
(b) Following a total coliform-positive
				  sample taken under this rule, supplies shall comply with the repeat monitoring
				  requirements and E. coli analytical requirements in R 325.10704h.
(c) Once all monitoring required by this rule
				  and R 325.10704h for a calendar month has been completed, supplies shall
				  determine whether 1 or more coliform treatment technique triggers in R
				  325.10704i have been exceeded. If 1 or more trigger has been exceeded, supplies
				  shall complete assessments under R 325.10704i.
(d) For the purpose of determining
				  eligibility for remaining on or qualifying for quarterly monitoring under
				  subrules (6)(a)(iv) and (7)(d) of this rule, respectively, for transient
				  noncommunity water supplies, the department may elect not to count monitoring
				  violations under R 325.10704j(3)(a) if the missed sample is collected no later
				  than the end of the monitoring period following the monitoring period in which
				  the sample was missed. The supply shall collect the make-up sample in a
				  different week than the routine sample for that monitoring period and should
				  collect the sample as soon as possible during the monitoring period. The
				  department shall not use this provision to reduce monitoring for a supply on
				  increased monitoring in subrule (7) of this rule. This authority does not
				  affect monitoring violations in R 325.10704j(3)(a) and reporting requirements
				  in R 325.10704k(1)(d).
Michigan Administrative Code › Department - Environmental Quality › Drinking Water And Municipal Assistance Division › Supplying Water to the Public › Part 7 - SURVEILLANCE, INSPECTION, AND MONITORING › Section R. 325.10704e - Total coliform; routine monitoring; community; serving 1,000 or fewer people; groundwater

Current through Vol. 24-12, July 15, 2024
Rule 704e.
(1)
				  General total coliform rules routine monitoring requirements are all of the
				  following:
(a) This rule applies to community
				  water supplies using only ground water, except ground water under the direct
				  influence of surface water, as defined in
				  R
				  325.10105 and serving 1,000 or fewer people.
(b) Following a total coliform-positive
				  sample taken under this rule, supplies shall comply with the repeat monitoring
				  requirements and E. coli analytical requirements in R 325.10704h.
(c) Once all monitoring required by this rule
				  and R 325.10704h for a calendar month has been completed, supplies shall
				  determine whether 1 or more coliform treatment technique triggers in R
				  325.10704i have been exceeded. If a trigger has been exceeded, supplies shall
				  complete assessments under R 325.10704i.
Michigan Administrative Code › Department - Environmental Quality › Drinking Water And Municipal Assistance Division › Supplying Water to the Public › Part 7 - SURVEILLANCE, INSPECTION, AND MONITORING › Section R. 325.10704f - Total coliform; routine monitoring; subpart H; serving 1,000 or fewer people

Current through Vol. 24-12, July 15, 2024
Rule 704f.
(1)
				  General total coliform rules routine monitoring requirements are all of the
				  following:
(a) This rule applies to subpart H
				  community and noncommunity water supplies serving 1,000 or fewer
				  people.
(b) Following a total
				  coliform-positive sample taken under this rule, supplies shall comply with the
				  repeat monitoring requirements and E. coli analytical requirements in R
				  325.10704h.
(c) Once all monitoring
				  under this rule and R 325.10704h for a calendar month has been completed,
				  supplies shall determine whether 1 or more coliform treatment technique
				  triggers in R 325.10704i have been exceeded. If a trigger has been exceeded,
				  supplies shall complete assessments under R 325.10704i.
(d) Seasonal supplies shall comply with both
				  of the following:
(i) Beginning April 1,
				  2016, all seasonal supplies shall complete the department-approved start-up
				  procedure, which may include a requirement for startup sampling, and submit a
				  certification to the department, before serving water to the public, that it
				  has completed the department-approved start-up procedures.
(ii) The department may exempt a seasonal
				  supply from some or all of the requirements for seasonal supplies if the entire
				  distribution system remains pressurized during the entire period that the
				  supply is not operating.