reglab/statecodes huggingface dataset:
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 11 - Surface Water Treatment Rule › Subchapter A - General Requirements and Definitions › Section XII-1101 - General Requirements

Current through Register Vol. 50, No. 6, June 20, 2024
A.
				  Although this Chapter is titled the "Surface Water Treatment Rule" (SWTR), it
				  is comprised of the adoption of all the following individual rules:
1. the Louisiana Surface Water Treatment Rule
				  (LSWTR) adopted on March 20, 1991 (see LR 17:271);
2. the May 20, 2000 rule (see LR 26:1036)
				  that repealed obsolete turbidity monitoring rules (these obsolete rules
				  pre-dated the newer turbidity monitoring rules contained in the
				  LSWTR);
3. the Louisiana Interim
				  Enhanced Surface Water Treatment Rule (LIESWTR) adopted on December 20, 2002
				  (LR 28:2513);
4. the Louisiana Long
				  Term 1 Enhanced Surface Water Treatment Rule (LLT1ESWTR) adopted on July 20,
				  2009 (LR 35:1239); and
5. the Long
				  Term 2 Enhanced Surface Water Treatment Rule (LT2ESWTR) adopted by reference on
				  September 20, 2012.
a. Pursuant to the
				  definition of
national primary drinking water regulations
(as
				  defined in this Part) and the provisions of
				  §377 of this Part, the Department of
				  Health and Hospitals (DHH) Office of Public Health (OPH) adopts by reference
				  the United States Environmental Protection Agency (USEPA) federal Long Term 2
				  Enhanced Surface Water Treatment Rule (LT2ESWTR) as published in the
Federal Register
dated January 5, 2006 (Volume 71, Number 3,
				  pages 653-786). In addition, under
				  §377 of this Part, DHH-OPH also adopted
				  by reference certain USEPA technical corrections to the federal LT2ESWTR. The
				  applicable technical corrections were published in the
Federal
				  Register
dated January 30, 2006 (Volume 71, Number 19, page 4968) and
				  in the
Federal Register
dated February 6, 2006 (Volume 71,
				  Number 24, page 6136).
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 11 - Surface Water Treatment Rule › Subchapter A - General Requirements and Definitions › Section XII-1102 - Relationship with this Part

Current through Register Vol. 50, No. 6, June 20, 2024
A.
				  In those instances where the requirements of this Chapter are stricter than or
				  conflict with the requirements of this Part generally, a public water system
				  utilizing surface water or ground water under the direct influence of surface
				  water (GWUDISW) shall comply with the requirements of this Chapter.
AUTHORITY NOTE:
					 Promulgated in accordance with
					 R.S.
					 40:4(A)(8)(13) and
					 R.S.
					 40:5(2)(3)(5)(6)(17)(20).
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 11 - Surface Water Treatment Rule › Subchapter A - General Requirements and Definitions › Section XII-1105 - Analytical Requirements

Current through Register Vol. 50, No. 6, June 20, 2024
A.
				  Analysis for total coliform, fecal coliform, or HPC which may be required under
				  this Chapter shall be conducted by a laboratory certified by DHH to do such
				  analysis. Until laboratory certification criteria are developed, laboratories
				  certified for total coliform analysis by DHH are deemed certified for fecal
				  coliform and HPC analysis.
B.
				  Public water systems shall conduct analysis for turbidity in accordance with:
1. SM 2130 B [(Nephelometric Method),
Standard Methods for the Examination of Water and Wastewater
,
				  19th edition, American Public Health Association (APHA), 800 I Street N.W.,
				  Washington, D.C. 20001-3710. Telephone (202)777-2742. Also available from the
				  American Water Works Association (AWWA) and the Water Environment Federation
				  (WEF)];
2. EPA Method 180.1
				  [(Nephelometric Method), "Methods for the Determination of Inorganic Substances
				  in Environmental Samples," EPA-600-R-93-100, August 1993. Available from the
				  National Technical Information Service, NTIS PB94-121811. Telephone (800)
				  553-6847]; or
3. GLI Method 2
				  [(Great Lakes Instrument Method 2), "Turbidity," November 2, 1982, GLI
				  International, Inc., 9020 West Dean Road, Milwaukee, Wisconsin 53224. Telephone
				  (414) 355-3601].
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 11 - Surface Water Treatment Rule › Subchapter A - General Requirements and Definitions › Section XII-1107 - Calibrationt/Validation of Turbidimeters

Current through Register Vol. 50, No. 6, June 20, 2024
A.
				  General. Calibrationt using a turbidity primary standard
				  shall be done in accord with approved methods listed in §1105 B
B. Calibrationt of
				  Turbidimeters. Bench top and continuous monitoring turbidimeters shall be
				  calibrated using a turbidity primary standard at a frequency of no less than
				  once every 90 days. The instruments shall be calibrated in accord with the
				  manufacturer's instructions.
C.
				  Validation of Bench Top Turbidimeters. Calibrationt of
				  the bench top turbidimeters shall be validated with state-approved secondary
				  standards each time a sample or set of samples is tested. For turbidity
				  measurements less than 0.2 NTU and the turbidimeter reading is +-20 percent or
				  more deviation of the state-approved secondary standard, the bench top
				  turbidimeter shall be recalibrated with a turbidity primary standard. For
				  turbidity measurements greater than or equal to 0.2 NTU and the turbidimeter
				  reading is +-10 percent or more deviation of the state-approved secondary
				  standard, the bench top turbidimeter shall be recalibrated with a turbidity
				  primary standard.
D. Validation of
				  Continuous Monitoring Turbidimeters. Calibrationt of the
				  continuous monitoring turbidimeters shall be validated at least once each week
				  by either using a state-approved secondary standard or determining the
				  turbidity of the water flowing out of the continuous monitoring turbidimeter
				  using a bench top turbidimeter. Follow-up actions based upon the validation
				  method selected are as follows.
1. Validation
				  by Use of a State-Approved Secondary Standard
a. If the state-approved secondary standard
				  is less than 0.2 NTU and the continuous monitoring turbidimeter reading is +-20
				  percent or more deviation of the state-approved secondary standard, the
				  continuous monitoring turbidimeter shall be recalibrated with a turbidity
				  primary standard. If the state-approved secondary standard is greater than or
				  equal to 0.2 NTU and the continuous monitoring turbidimeter reading is +-10
				  percent or more deviation of the state-approved secondary standard, the
				  continuous monitoring turbidimeter shall be recalibrated with a turbidity
				  primary standard.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 11 - Surface Water Treatment Rule › Subchapter A - General Requirements and Definitions › Section XII-1110 - CalibrationpH/Validation of pH Meters

Current through Register Vol. 50, No. 6, June 20, 2024
A. pH
				  of water within the water treatment plant shall be conducted using a pH meter
				  having a minimum accuracy of ±0.2 pH units.
B. Benchtop pH meters used for determining
				  the pH of water within the water treatment plant shall be calibrated at least
				  once each day in accordance with Section 4. a. of SM
				  4500-H+ B (Electrometric pH Method) of the
Standard Methods for the Examination of Water and Wastewater
,
				  19th Edition, or the manufacturer's specifications.
C. The calibrationpH
				  of benchtop pH meters shall be validated with at least one buffer solution each
				  time a series of samples is run and, if necessary, recalibrated in accord with
				  the requirements of Subsection B of this Section.
D. On-line pH meters shall be
				  calibratedpH according to the manufacturer's
				  specifications at a frequency such that the deviation observed between
				  calibrations is typically less than ±0.2 pH units. The deviation is to be
				  recorded at each calibration by recording the current process pH both before
				  and after calibration. In no case shall calibrations of on-line pH meters be
				  performed at a frequency of less than once each week.
E. Records of calibrations on each pH meter
				  shall be maintained for at least three years.
AUTHORITY NOTE:
					 Promulgated in accordance with
					 R.S.
					 40:4(A)(8) and
					 40:5(5)(6)(17)(20).
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 11 - Surface Water Treatment Rule › Subchapter A - General Requirements and Definitions › Section XII-1111 - Calibrationtemp/Validation of Temperature Measuring Devices

Current through Register Vol. 50, No. 6, June 20, 2024
A. Water temperature within the water
				  treatment plant shall be measured using a thermometer, thermocouple, or other
				  temperature measuring device having a minimum accuracy of +-0.5 degrees Celsius
				  (0.5°C).
B. Service thermometers,
				  thermocouples, and other temperature measuring devices used for determining
				  water temperature within the water treatment plant shall be validated at a
				  frequency of once per month using a field thermometer that has been calibrated
				  annually against a NIST certified thermometer. The NIST certified thermometer
				  shall be sent back to the manufacturer for recalibration at least once every
				  three years.
C. Records of
				  validations/calibrations on each temperature measuring device shall be
				  maintained for at least three years.
AUTHORITY NOTE:
					 Promulgated in accordance with
					 R.S.
					 40:4(A)(8) and
					 40:5(5)(6)(17)(20).
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 11 - Surface Water Treatment Rule › Subchapter A - General Requirements and Definitions › Section XII-1112 - Cleaning of Analytical Instrumentation

Current through Register Vol. 50, No. 6, June 20, 2024
A. A thorough cleaning of analytical
				  instrumentation (particularly continuous monitoring turbidimeters, disinfectant
				  residual monitors, and pH meters) shall be performed, as necessary, prior to
				  performing any calibration/validation. On a weekly basis, continuous monitoring
				  turbidimeters and continuous disinfectant residual monitors shall be inspected
				  to determine if there is any material or sedimentation in the measuring
				  chambers. Records of such inspection/cleaning shall be kept for at least three
				  years and such records shall include meter location (e.g., model and serial
				  number), dates of cleaning, and the name of the person performing the
				  cleaning.
AUTHORITY NOTE:
					 Promulgated in accordance with
					 R.S.
					 40:4(A)(8) and
					 40:5(5)(6)(17)(20).
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 11 - Surface Water Treatment Rule › Subchapter B - Treatment Technique Requirements and Performance Standards › Section XII-1113 - Treatment Technique Requirements

Current through Register Vol. 50, No. 6, June 20, 2024
A. Each supplier using surface water or
				  GWUDISW shall provide multibarrier treatment that meets the requirements of
				  this Chapter and reliably ensures at least:
1. a total of 99.9 percent (3 Log) reduction
				  of
Giardia
cysts through treatment processes including
				  filtration and disinfection;
2. a
				  total of 99.99 percent (4 Log) reduction of viruses through treatment processes
				  including filtration and disinfection;
3. a total of 99 percent (2 Log) removal of
Cryptosporidium
oocysts through treatment processes including
				  filtration;
4. the total reductions
				  to be required by the DHH may be higher and are subject to the source water
				  concentration of
Giardia lamblia
, viruses, and
Cryptosporidium
;
5. the residual disinfectant concentration in
				  the water delivered to the distribution system is not less than 0.5 mg/l free
				  chlorine or 0.5 mg/l total chlorine for more than 4 hours in any 24 hour
				  period; and
6. the residual
				  disinfectant concentration is not less than 0.5 mg/l free chlorine or 0.5 mg/l
				  total chlorine in more than 5.0 percent of the samples collected each month
				  from the distribution system for any two consecutive months.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 11 - Surface Water Treatment Rule › Subchapter B - Treatment Technique Requirements and Performance Standards › Section XII-1115 - Filtration Performance Standards

Current through Register Vol. 50, No. 6, June 20, 2024
A. All surface water or GWUDISW utilized by a
				  supplier shall be treated using one of the following filtration technologies
				  unless an alternative process has been approved by the DHH.
1. Conventional Filtration
				  Treatment
2. Direct Filtration
				  Treatment
3. Slow Sand
				  Filtration
4. Diatomaceous Earth
				  Filtration
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 11 - Surface Water Treatment Rule › Subchapter B - Treatment Technique Requirements and Performance Standards › Section XII-1117 - Non-Filtering Systems

Current through Register Vol. 50, No. 6, June 20, 2024
A.
				  General. On a case-by-case basis, DHH may waive filtration requirements for
				  suppliers using GWUDISW. To be considered, non-filtering systems shall conform
				  to the criteria of this Section. All suppliers using surface water shall employ
				  filtration.
B. Source Water Quality
				  to Avoid Filtration
1. To avoid filtration, a
				  system shall demonstrate that either the fecal coliform concentration is less
				  than 20/100 ml and/or the total coliform concentration is less than 100/100 ml
				  in the water prior to the point of disinfectant application in 90 percent of
				  the samples taken during the six previous months. Samples shall be taken prior
				  to blending, if employed.
a. If both fecal
				  and total coliform analysis is performed, only the fecal coliform limit shall
				  be met, under this condition, both fecal and total coliform results shall be
				  reported.
b. Sample analyses
				  methods may be the multiple-tube fermentation technique or the membrane filter
				  technique as described in the
Standard Methods for the Examination of
				  Water and Wastewater
, 19th Edition.
c. Minimum Sampling Frequencies
Table 3
Population
Samples/Week
[LESS THAN EQUAL TO] 500
1
501-3300
2
3301-10,000
3
10,001-25,000
4
> 25,000
5
d.
				  Also, one coliform sample shall be taken and analyzed each day the turbidity
				  exceeds 1 NTU prior to disinfection.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 11 - Surface Water Treatment Rule › Subchapter B - Treatment Technique Requirements and Performance Standards › Section XII-1119 - Disinfection Performance Standards

Current through Register Vol. 50, No. 6, June 20, 2024
A. All surface water or GWUDISW utilized by a
				  supplier shall be provided with continuous disinfection treatment sufficient to
				  ensure that the total treatment process provides inactivation of
Giardia
cysts and viruses, in conjunction with the removals
				  obtained through filtration, to meet the reduction requirements specified in
				  §1113 of this Chapter.
B. Except as otherwise specified by this
				  Section and Chapter, disinfection treatment shall comply with the minimum
				  standards and requirements set forth in §355. A and
				  §357 of this Part.
C. Determination of Inactivation by
				  Disinfection. Minimum disinfection requirements shall be determined by DHH on a
				  case-by-case basis but shall not be less than those required in Table 2 of
				  §1115. B.1 of this Chapter. The desired level of inactivation shall be
				  determined by the calculation of CT values; residual disinfectant concentration
				  ("C") times the contact times ("T") when the pipe or vessel is in operation.
				  Disinfectant contact time shall be determined by tracer studies.
1. The T10 value will
				  be used as the detention time for calculating CTs. T10
				  is the detention time at which 90 percent of the flow passing through a vessel
				  is retained within the vessel. Systems conducting tracer studies shall submit a
				  plan to DHH for review and approval prior to the study being conducted. The
				  plan shall identify how the study will be conducted, the tracer to be used,
				  flow rates, etc. The plan shall also identify who will actually conduct the
				  study. Tracer studies are to be conducted according to protocol found in
				  standard engineering texts (such as Levenspiel), or the methodology in EPA's
Guidance Manual for Compliance with the Filtration and Disinfection
				  Requirements for Public Water Systems using Surface Water Sources
,
				  March 1991 Edition (SWTR Guidance Manual).
2. On a case-by-case basis, alternate
				  empirical methods of calculating T10 as outlined in the
				  SWTR Guidance Manual may be accepted for vessels with geometry and baffling
				  conditions analogous to basins on which tracer studies have been conducted and
				  results have been published in the SWTR Guidance Manual or the
				  literature.
3. Additional tracer
				  studies shall be conducted by the supplier whenever modifications are made
				  which may impact flow distribution, contact time, or disinfectant
				  distribution.
4. CT values utilized
				  in this evaluation shall be those reported in the SWTR Guidance
				  Manual.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 11 - Surface Water Treatment Rule › Subchapter B - Treatment Technique Requirements and Performance Standards › Section XII-1121 - Design Standards

Current through Register Vol. 50, No. 6, June 20, 2024
A. All
				  new treatment and disinfection facilities (and any existing treatment and
				  disinfection facilities which undergo substantial renovation) shall be designed
				  and constructed to meet the existing state sanitary code as modified by the
				  requirements contained herein.
B.
				  All new filtration facilities for surface water or GWUDISW plants (and any
				  likewise existing filtration facilities which undergo substantial renovation)
				  shall be designed such that each individual filter is constructed with
				  filter-to-waste capability.
C. All
				  new filtration and/or clearwell facilities for surface water or GWUDISW plants
				  (and any likewise existing filtration and/or clearwell facilities which undergo
				  substantial renovation) shall be designed to have one combined filter effluent
				  point prior to clearwell storage. If this is not feasible for existing plants,
				  such as when multiple clearwells already exist, each plant going to its own
				  clearwell shall be designed to have a combined filter effluent point prior to
				  that particular plant's clearwell.
AUTHORITY NOTE:
					 Promulgated in accordance with
					 R.S.
					 40:4 (A)(8) and 40:5
					 (2)(3)(5)(6)(17)(20).
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 11 - Surface Water Treatment Rule › Subchapter C - Monitoring Requirements › Section XII-1123 - Filtration Monitoring

Current through Register Vol. 50, No. 6, June 20, 2024
A.
				  Source Water Turbidity Monitoring. Each supplier using surface water or GWUDISW
				  as a source of water supply shall monitor the turbidity level of the raw water
				  source by taking and analyzing no less than one grab sample per day. Continuous
				  turbidity monitoring may be substituted provided the accuracy of the
				  measurements are validated weekly in accord with §1107. D of this Chapter. If
				  there is a failure in the continuous turbidity monitoring equipment, the system
				  shall collect and analyze no less than one grab sample per day. Systems shall
				  maintain the results of raw water turbidity monitoring for at least three
				  years.
B. Settled Water Turbidity
				  Monitoring
1. Each supplier using surface
				  water as its source of water supply should monitor and record settled water
				  turbidity prior to filtration in each individual treatment train at least once
				  every four hours.
2. Each supplier
				  using GWUDISW as its source of water supply should, if filtration is required
				  or otherwise performed, monitor and record settled water turbidity prior to
				  filtration in each individual treatment train at least once every four
				  hours.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 11 - Surface Water Treatment Rule › Subchapter C - Monitoring Requirements › Section XII-1125 - Disinfection Monitoring

Current through Register Vol. 50, No. 6, June 20, 2024
A. CT
				  Parameters Monitoring. To determine compliance with disinfection inactivation
				  requirements specified in Table 2 of §1115. B.1 of this Chapter, each supplier
				  shall develop and conduct a monitoring program to measure those parameters that
				  affect the performance of the disinfection process. This shall include but not
				  be limited to:
1. temperature of the
				  disinfected water at each residual disinfectant concentration sampling
				  point;
2. pH(s) of the disinfected
				  water (if free chlorine is used as a disinfectant) at each free chlorine
				  residual disinfectant concentration sampling point;
3. the disinfectant contact time(s) at peak
				  hourly flow at each residual disinfectant concentration sampling
				  point;
4. the residual disinfectant
				  concentrations before or at the first customer during peak hourly flow;
				  and
5. if the system uses more than
				  one point of disinfectant application before the first customer, the system
				  must determine the parameters identified in Paragraphs 1-4 of this Subsection
				  for each individual disinfection segment immediately prior to the next point of
				  disinfectant application during peak hourly flow so that a cumulative CT value
				  can be determined before the treated water reaches the first customer.
(NOTE: If the treatment plant uses its own finished water
					 for potable purposes, the first customer may be the treatment plant
					 itself.)
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 11 - Surface Water Treatment Rule › Subchapter C - Monitoring Requirements › Section XII-1129 - Disinfection Practice Changes

Current through Register Vol. 50, No. 6, June 20, 2024
A.
				  Suppliers using surface water or GWUDISW as the source of water supply which
				  decide to make a significant change to its disinfection practice shall submit
				  plans and specifications to DHH for review and approval (in accord with the
				  requirements of
				  §105 of this Part) prior to making such
				  change. Significant changes to disinfection practice are:
1. any changes to the point of
				  disinfection;
2. any changes to the
				  disinfectant(s) used in the treatment plant;
3. any changes to the disinfection process;
				  or
4. any disinfection practice
				  modification which may lower the system's ability to comply with the required
				  minimum log inactivation attributable to disinfection as listed in Table 2 of
				  §1115. B.1 of this Chapter.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 11 - Surface Water Treatment Rule › Subchapter D - Operation › Section XII-1131 - Operating Criteria

Current through Register Vol. 50, No. 6, June 20, 2024
A. All
				  treatment plants utilizing surface water or GWUDISW shall be operated by
				  certified operators in accord with LAC 48:V.Chapter 73.
B. Filtration facilities shall be operated in
				  accordance with the following requirements.
1. Conventional and direct filtration
				  treatment plants shall be operated at flow rates not to exceed 3 gallons per
				  minute per square foot (gpm/sq ft) for gravity filters. In any instance when
				  pressure filters have been approved by DHH as the primary turbidity removal
				  mechanism (see
				  §323 of this Part), filtration rates
				  shall not exceed 2 gpm/sq ft.
2.
				  Slow sand filters shall be operated at filtration rates not to exceed 0.10
				  gallons per minute per square foot. The filter bed shall not be dewatered
				  except for cleaning and maintenance purposes.
3. Diatomaceous earth filters shall be
				  operated at filtration rates not to exceed 1.0 gallon per minute per square
				  foot.
4. In order to obtain
				  approval for higher filtration rates than those specified in this Section, the
				  supplier shall demonstrate to DHH that the filters can achieve an equal degree
				  of performance.
5. Filtration rates
				  shall be increased gradually when placing filters back into service following
				  backwashing or any other interruption in the operation of the filter.
6. In any instance when pressure filters have
				  been approved by DHH as the primary turbidity removal mechanism (see
				  §323 of this Part), such filters shall be
				  physically inspected and evaluated annually (not sooner than 120 calendar days
				  from any previous inspection/evaluation) for such factors as media condition,
				  mudball formation, and short circuiting. A written record of the inspection
				  shall be maintained at the treatment plant.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 11 - Surface Water Treatment Rule › Subchapter E - Reporting › Section XII-1133 - DHH Notification

Current through Register Vol. 50, No. 6, June 20, 2024
A. The
				  supplier shall notify DHH by telephone or other equally rapid means (see
				  Subsection C of this Section) as soon as possible but no later than 24 hours
				  whenever:
1. the turbidity of the combined
				  filter effluent as monitored exceeds 1.0 NTU at any time for conventional
				  filtration treatment or direct filtration treatment;
2. more than two (i.e., three) consecutive
				  four hour monitoring periods of the combined filter effluent show an exceedance
				  of 0.5 NTU for conventional filtration treatment or direct filtration
				  treatment;
3. the turbidity of the
				  combined filter effluent as monitored exceeds 1.0 NTU for slow sand filtration
				  or diatomaceous earth filtration;
4. the turbidity of the combined filter
				  effluent as monitored exceeds the maximum level set by DHH for the particular
				  alternative filtration technology approved by DHH pursuant to §1115. F of this
				  Chapter;
5. the disinfectant
				  residual measured from any sample collected from water being delivered to the
				  distribution system is found to be less than 0.5 mg/l free chlorine or 0.5 mg/l
				  chloramine residual (measured as total chlorine). The notification shall
				  indicate whether the disinfectant residual was restored to at least 0.5 mg/l
				  free chlorine or 0.5 mg/l chloramine residual (measured as total chlorine)
				  within 4 hours;
6. an event occurs
				  which may affect the ability of the treatment plant to produce a safe, potable
				  water including, but not limited to, spills of hazardous materials in the
				  watershed and unit treatment process failures;
7. a waterborne disease outbreak potentially
				  attributable to the water system has occurred and is discovered by the
				  supplier.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 11 - Surface Water Treatment Rule › Subchapter E - Reporting › Section XII-1135 - Monthly Report

Current through Register Vol. 50, No. 6, June 20, 2024
A.
				  General. Each supplier with a surface water or GWUDISW treatment facility shall
				  submit a monthly written report on the operation of each facility to the DHH by
				  the tenth day of the following month. Such report shall be signed by a
				  certified operator of the public water system.
B. Combined Filter Effluent Turbidity
				  Results. The monthly report shall include the following results of samples
				  collected from the combined filter effluent (or from an alternate compliance
				  sampling point as approved by DHH on a case-by-case basis).
1. The highest individual turbidity
				  measurement determined within each four hour monitoring period for each day
				  that the system is in operation. Suppliers operating treatment facilities
				  continuously shall report the highest individual turbidity measurement for each
				  of the following four hour monitoring periods:
a. 12:01 am - 4:00 am;
b. 4:01 am - 8:00 am;
c. 8:01 am - 12:00 pm (noon);
d. 12:01 pm - 4:00 pm;
e. 4:01 pm - 8:00 pm;
f. 8:01 pm - 12:00 am (midnight).
NOTE: Suppliers which do not operate their treatment
					 facilities continuously shall utilize these same time periods, as applicable,
					 for reporting purposes. Times when there is no combined filter effluent
					 available for monitoring, such as when the plant is not in operation, shall
					 also be recorded by the supplier and such events shall be clearly identified
					 and reported on the monthly report.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 11 - Surface Water Treatment Rule › Subchapter E - Reporting › Section XII-1137 - Disinfection Profiling Report

Current through Register Vol. 50, No. 6, June 20, 2024
A.
				  Public water systems subject to the requirements of §1127. A of this Chapter
				  shall submit to DHH a printed report on the initial 12 consecutive months of
				  disinfection profiling data [including daily or weekly (dependent upon system
				  size, see §1127 A), individual spreadsheets containing the monitoring data, CT
				  computation, and total log inactivation data] and in monthly/yearly graphical
				  profile form as required under
				  §1127 of this Chapter. For systems
				  serving at least 10,000 individuals, this disinfection profiling report is due
				  on no later than February 15, 2004. For systems serving less than 10,000
				  individuals which have not yet submitted a report to DHH, this disinfection
				  profiling report is due on July 20, 2009.
B. On a case-by-case basis, DHH may accept
				  existing operational data in lieu of the requirements of Subsection A of this
				  Section if DHH determines that such data is substantially equivalent to data
				  required to be collected under
				  §1127 of this Chapter. Such data shall
				  be representative of inactivation through the entire treatment plant and not
				  just of certain treatment segments.
C. Following the submittal of the initial 12
				  consecutive month period report required under Subsection A of this Section,
				  nothing herein shall be construed to prohibit DHH from requiring the public
				  water system to submit a more current disinfection profiling data set on a
				  case-by-case basis (e.g., when a significant change to the disinfection
				  practice is proposed, etc.).
AUTHORITY NOTE:
					 Promulgated in accordance with R.S 40: 4 (A)(8) and R.S. 40: 5
					 (2)(3)(5)(6)(17)(20).
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 11 - Surface Water Treatment Rule › Subchapter F - Public Notification › Section XII-1139 - Consumer Notification

Current through Register Vol. 50, No. 6, June 20, 2024
A.
				  Treatment Technique/Performance Standard Violations. The supplier shall notify
				  persons served by the system whenever there is a failure to comply with the
				  treatment technique requirements specified in
				  §1113 or 1141, or a failure to comply
				  with the performance standards specified in
				  §1115 A or 1119.C of this Chapter. The
				  notification shall be given in a manner approved by the DHH, and shall include
				  the following mandatory language.
1. "The La.
				  Department of Health and Hospitals (DHH) sets drinking water standards and has
				  determined that the presence of microbiological contaminants are a health
				  concern at certain levels of exposure. If water is inadequately treated,
				  microbiological contaminants in that water may cause disease. Disease symptoms
				  may include diarrhea, cramps, nausea, and possibly jaundice, and any associated
				  headaches and fatigue. These symptoms, however are not just associated with
				  disease-causing organisms in drinking water, but also may be caused by a number
				  of factors other than your drinking water. DHH has set enforceable requirements
				  for treating drinking water to reduce the risk of these adverse health effects.
				  Treatment such as filtering and disinfecting the water removes or destroys
				  microbiological contaminants. Drinking water which is treated to meet DHH
				  requirements is associated with little to none of this risk and should be
				  considered safe."
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 11 - Surface Water Treatment Rule › Subchapter G - Filter Backwash Recycling › Section XII-1141 - Recycling Provisions

Current through Register Vol. 50, No. 6, June 20, 2024
A.
				  Applicability. All public water systems having treatment plants which utilize
				  surface water or GWUDISW that employ conventional filtration treatment or
				  direct filtration treatment and that recycle spent filter backwash water,
				  thickener supernatant, or liquids from dewatering processes must meet the
				  requirements in Subsections B through D of this Section.
B. Reporting. A system must notify the
				  Department of Health and Hospitals (DHH) in writing if the system recycles
				  spent filter backwash water, thickener supernatant, or liquids from dewatering
				  processes. This notification must include, at a minimum, the following
				  information:
1. a plant schematic showing the
				  origin of all flows which are recycled (including, but not limited to, spent
				  filter backwash water, thickener supernatant, and liquids from dewatering
				  processes), the hydraulic conveyance used to transport them, and the location
				  where they are re-introduced back into the treatment plant;
2. typical recycle flow in gallons per minute
				  (gpm), the highest observed plant flow experienced in the previous year (gpm),
				  design flow for the treatment plant (gpm), and the DHH-approved operating
				  capacity for the plant where the DHH has made such determinations.
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 12 - Ground Water Rule › Section XII-1201 - General

Current through Register Vol. 50, No. 6, June 20, 2024
A. Pursuant to the
				definition of
National Primary Drinking Water Regulations
and
				the provisions of
				§377 of this Part, the Louisiana
				Department of Health (LDH) Office of Public Health (OPH) adopts by reference
				the United States Environmental Protection Agency (USEPA) federal Ground Water
				Rule (GWR) as published in the
Federal Register
dated November
				8, 2006 (Volume 71, Number 216, pages 65650 - 65659). In addition, under
				§377 of this Part, LDH-OPH also adopted
				by reference certain USEPA technical corrections to the federal GWR. The
				applicable technical corrections were published in the
Federal
				Register
dated November 21, 2006 (Volume 71, Number 224, page 67427).
AUTHORITY NOTE:
				  Promulgated in accordance with
				  R.S.
				  40:4(A)(8) and
				  R.S.
				  40:5.A.(2)(3)(5)(6)(17)(20).
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 13 - Disinfectants and Disinfection Byproducts Rule › Subchapter A - General › Section XII-1301 - General

Current through Register Vol. 50, No. 6, June 20, 2024
A. Pursuant to the
				  definition of
national primary drinking water regulations
and
				  the provisions of
				  §377 of this Part, the Department of
				  Health and Hospitals (DHH) Office of Public Health (OPH) adopts by reference
				  the United States Environmental Protection Agency (USEPA) federal Disinfectants
				  and Disinfection Byproducts Rule (D/DBPR) as published in the
Federal
				  Register
dated December 16, 1998 (Volume 63, Number 241, pages
				  69389-69476). In addition, under
				  §377 of this Part, DHH-OPH also adopted
				  by reference certain USEPA technical corrections to the federal D/DBPR. The
				  applicable technical corrections were published in the
Federal
				  Register
dated January 16, 2001 (Volume 66, Number 10, pages
				  3769-3780) and in the
Federal Register
dated February 12, 2001
				  (Volume 66, Number 29, page 9903). The regulations in this Chapter are
				  promulgated in order to clarify the state's discretionary decisions allowed by
				  the federal requirements.
B.
				  Pursuant to the definition of national primary drinking water regulations and
				  the provisions of
				  §377 of this Part, the Department of
				  Health and Hospitals (DHH) Office of Public Health (OPH) adopts by reference
				  the United States Environmental Protection Agency (USEPA) federal Stage 2
				  Disinfectants and Disinfection Byproducts Rule (Stage 2 D/DBPR) as published in
				  the
Federal Register
dated January 4, 2006 (Volume 71, Number
				  2, pages 388-493). In addition, under
				  §377 of this Part, DHH-OPH also adopted
				  by reference certain USEPA technical corrections to the federal Stage 2 D/DBPR.
				  The applicable technical corrections were published in the
Federal
				  Register
dated January 27, 2006 (Volume 71, Number 18, pages
				  4644-4645), in the
Federal Register
dated June 29, 2006
				  (Volume 71, Number 125, page 37168) and in the
Federal
				  Register
dated November 14, 2006 (Volume 73, Number 221, pages
				  67456-67463).
AUTHORITY NOTE:
					 Promulgated in accordance with
					 R.S.
					 40:4(A)(8) and
					 40:5(2)(3)(5)(6)(17)(20).
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 13 - Disinfectants and Disinfection Byproducts Rule › Subchapter B - Disinfection Byproduct (DBP) Precursor Control › Section XII-1303 - Applicability

Current through Register Vol. 50, No. 6, June 20, 2024
A. The requirements
				  of this Subchapter shall only be applicable to public water systems whose
				  source of water is surface water or ground water under the direct influence of
				  surface water (GWUDISW) which employ conventional filtration
				  treatment.
AUTHORITY NOTE:
					 Promulgated in accordance with
					 R.S.
					 40:4(A)(8) and
					 40:5(2)(3)(5)(6)(17)(20).
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 13 - Disinfectants and Disinfection Byproducts Rule › Subchapter B - Disinfection Byproduct (DBP) Precursor Control › Section XII-1307 - Quarterly TOC Report

Current through Register Vol. 50, No. 6, June 20, 2024
A. At
				  the end of each calendar quarter, public water systems, meeting §1303. A applicability requirements of this Subchapter, shall submit a quarterly TOC
				  report to the state health officer for each plant site. Particularly, after 12
				  consecutive months of TOC compliance monitoring have occurred, the system
				  shall, following the end of each calendar quarter, calculate the running annual
				  TOC removal ratio average using the previous 12 months of monthly TOC removal
				  ratios as the basis. [ For example, the report for the fourth calendar quarter
				  of 2004 (required to be submitted no later than January 10, 2005) will consist
				  of the annual average removal ratio determined from the 12 monthly removal
				  ratios reported from each of the then 12 preceding months,
				  i.e
.
, January-December 2004. The report for the first calendar
				  quarter 2005 (required to be submitted no later than April 10, 2005) will
				  consist of the annual average removal ratio determined from the 12 monthly
				  removal ratios reported from each of the then preceding 12 months, i.e., April
				  2004-March 2005. The report for the second calendar quarter 2005 (required to
				  be submitted no later than July 10, 2005) will consist of the annual average
				  removal ratio determined from the 12 monthly removal ratios reported from each
				  of the then preceding 12 months, i.e., July 2004-June 2005. The report for the
				  third calendar quarter 2005 (required to be submitted no later than October 10,
				  2005) will consist of the annual average removal ratio determined from the 12
				  monthly removal ratios reported from each of the then preceding 12 months,
				  i.e., October 2004-September 2005, etc.] The quarterly TOC report shall be on a
				  report form approved by the state health officer. Such report shall
				  specifically be provided to the OPH District Engineering Office which has
				  jurisdictional oversight of the public water system within 10 days following
				  the end of each calendar quarter.
AUTHORITY NOTE:
					 Promulgated in accordance with
					 R.S.
					 40:4(A)(8) and
					 40:5(2)(3)(5)(6)(17)(20).
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 13 - Disinfectants and Disinfection Byproducts Rule › Subchapter B - Disinfection Byproduct (DBP) Precursor Control › Section XII-1311 - Alternative Compliance Criteria

Current through Register Vol. 50, No. 6, June 20, 2024
A. When a public water system, meeting §1303.
				  A applicability requirements, uses an alternative compliance criteria (ACC) on
				  its monthly TOC monitoring report, the following numbering key shall be
				  employed to identify the specific alternative compliance criteria used.
1.
ACC #1
-source water TOC
				  level is less than 2.0 mg/L.
2.
ACC #2
-treated water TOC level is less than 2.0
				  mg/L.
3.
ACC
				  #3
-source water TOC is less than 4.0 mg/L and source water alkalinity
				  is greater than 60mg/L (as CaCO3) and either:
a. the TTHM and HAA5 running annual averages
				  are no greater than 0.040 mg/L and 0.030 mg/L, respectively; or
b. prior to the effective date for
				  compliance, the system has made a clear and irrevocable financial commitment
				  not later than the effective date for compliance to use technologies that will
				  limit the levels of TTHMs and HAA5s to no more than 0.040 mg/L and 0.030 mg/L,
				  respectively.
4.
ACC #4
-the TTHM and HAA5 running annual averages are no
				  greater than 0.040 mg/L, respectively, and the system uses only chlorine for
				  primary disinfection and maintenance of a residual in the distribution
				  system.
5.
ACC
				  #5
-source water specific ultraviolet absorbance (SUVA) prior to any
				  treatment is less than or equal to 2.0 L/mg-m.
6.
ACC #6
-finished water
				  SUVA is less than or equal to 2.0 L/mg-m.
7.
ACC #7
-for systems
				  practicing enhanced softening that cannot achieve the Step 1 TOC removal
				  requirements and softening results in lowering the treated water alkalinity to
				  less than 60 mg/L (as CaCO3).
8.
ACC #8
-for systems
				  practicing enhanced softening that cannot achieve the Step 1 TOC removal
				  requirements and softening results in removing at least 10 mg/L of magnesium
				  hardness (as CaCO3).
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 13 - Disinfectants and Disinfection Byproducts Rule › Subchapter B - Disinfection Byproduct (DBP) Precursor Control › Section XII-1313 - Amendment to the Step 1 Required Removal of TOC Matrix Table under 40 CFR 141.135(b)(2) to Clarify ACC #1

Current through Register Vol. 50, No. 6, June 20, 2024
A.
				  In order to clarify the requirements for a system to be able to achieve ACC #1,
				  the "Step 1 Required Removal of TOC by Enhanced Coagulation and Enhanced
				  Softening for Subpart H Systems Using Conventional Treatment" matrix table
				  under
				  40
				  CFR 141.135(b)(2) is hereby
				  amended to read as follows.
STEP 1 REQUIRED REMOVAL OF TOC BY ENHANCED COAGULATION AND
					 E NHANCED S OFTENING FOR SUBPART H S YSTEMS USING CONVENTIONAL TREATMENT
					 1, 2
Source-Water TOC, mg/L
Source-Water Alkalinity, mg/L as
								CaCO3 (in percentages)
0-60
>60-120
>1203
>2.0-4.0
35.0
25.0
15.0
> 4.0-8.0
45.0
35.0
25.0
> 8.0
50.0
40.0
30.0
1Systems meeting at least one
					 of the conditions in Paragraph (a)(2)(i)-(vi) of
					 40
					 CFR 141.135 are not required to operate with
					 enhanced coagulation.
2Softening system meeting one
					 of the alternative compliance criteria in Paragraph (a)(3) of
					 40
					 CFR 141.135 are not required to operate with
					 enhanced softening.
3System practicing softening
					 must meet the TOC removal requirements in this column.
AUTHORITY NOTE:
					 Promulgated in accordance with
					 R.S.
					 40:4(A)(8) and
					 40:5(2)(3)(5)(6)(17)(20).
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 13 - Disinfectants and Disinfection Byproducts Rule › Subchapter B - Disinfection Byproduct (DBP) Precursor Control › Section XII-1315 - Analytical Requirements for TOC, DOC, and UV254 Error! Bookmark not defined

Current through Register Vol. 50, No. 6, June 20, 2024
A. All
				  compliance monitoring samples for TOC, DOC, and UV254
				  shall be analyzed in a certified chemical laboratory/drinking water or in an
				  EPA-certified laboratory.
B. In
				  addition to any other applicable analytical requirements, all laboratories in
				  Subsection A of this Section which analyze compliance monitoring samples for
				  TOC, DOC, and UV254 shall incorporate the quality
				  assurance (QA) and quality control (QC) procedures contained within "EPA Method
				  415.3, Revision 1.0" dated June 2003 which is titled "Determination of Total
				  Organic Carbon and Specific UV Absorbance at 254 nm in Source Water and
				  Drinking Water."
C. The effective
				  date of this Section shall be January 1, 2005.
AUTHORITY NOTE:
					 Promulgated in accordance with
					 R.S.
					 40:4(A)(8) and
					 40:5(2)(3)(5)(6)(17)(20).
Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XII - Water Supplies › Chapter 13 - Disinfectants and Disinfection Byproducts Rule › Subchapter C - Chlorite/Chlorine Dioxide › Section XII-1317 - Monthly Reporting Required

Current through Register Vol. 50, No. 6, June 20, 2024
A. If a system uses chlorine dioxide,
				  chlorite monitoring results (daily, monthly, as well as any additional
				  compliance monitoring) and daily chlorine dioxide residual monitoring results
				  (as ClO2) shall be reported to the state health officer
				  monthly. All results shall be on a report form approved by the state health
				  officer. Such report shall specifically be provided to the OPH district
				  engineering office which has jurisdictional oversight of the public water
				  system within 10 days following the end of each calendar month.
1. Nothing within this Section shall be
				  interpreted to exempt a public water system which uses chlorine dioxide from
				  issuing public notification and consulting with the state health officer as
				  soon as possible but no later than 24 hours after the system learns of an acute
				  violation of the maximum residual disinfectant level (MRDL) for chlorine
				  dioxide.