reglab/statecodes huggingface dataset:
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 810 - Requirements for the operation and maintenance of public water systems › Subchapter I - General Operations › Section NR 810.23 - Water system security and emergency operations

Current through June 24, 2024
(1) WATER SYSTEM
				  SECURITY. Water system buildings and infrastructure access points above ground,
				  such as reservoir hatches, lines used to pump to waste, doors and valve
				  chambers, shall have adequate locks and be secured when not occupied or in use.
				  Security measures that may be taken include: the installation of security
				  fences, hardened or protected locks, exterior warning lights, exterior motion
				  detectors, surveillance cameras; door, window, and hatch intrusion alarms, room
				  motion sensors, steel doors, minimizing the size of windows, eliminating
				  windows or using hardened window materials or iron, steel bars, or mesh over
				  windows. Any security alarms installed shall be connected to telemetry control,
				  SCADA systems, and monitored alarm systems where they are used.
(2) EMERGENCY OPERATIONS. Water suppliers for
				  each community water system shall develop a plan to prepare for, respond to,
				  mitigate and recover from all types of emergency situations, including
				  terrorism, sabotage, natural disasters such as floods and tornadoes, loss of
				  system-wide pressure, and overfeed of chemicals.
(a) Municipal water systems shall have an
				  emergency operation plan including, at a minimum:
1. A list of local and state emergency
				  contacts.
2. A system for
				  establishing emergency communications.
3. Any mutual aid agreements the water
				  utility has with other communities for sharing personnel, equipment and other
				  resources during an emergency.
4.
				  Standard procedures for emergency water production.
5. A means for sharing information with
				  customers.
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 810 - Requirements for the operation and maintenance of public water systems › Subchapter I - General Operations › Section NR 810.24 - Water system capacity

Current through June 24, 2024
All new community and non-transient non-community water
					 systems shall develop and maintain adequate financial, managerial and technical
					 capacity to meet the requirements of this chapter and
					 42 USC
					 300 f to 300j-26. New community and
					 non-transient non-community water systems are defined as those constructed
					 after September 1, 1999, or those that upgrade system type after that date to
					 become a community or nontransient noncommunity water system.
Note:
					 42 USC
					 300 f to 300j-26 is entitled the federal Safe
					 Drinking Water Act.
(1) NEW SYSTEM
				  CAPACITY EVALUATION. No new community or non-transient non-community water
				  system may commence operation after September 1, 1999, unless the owner of the
				  proposed water system first demonstrates to the satisfaction of the department
				  that the water system shall have and shall maintain adequate financial,
				  managerial and technical capacity to meet the requirements of this chapter and
				  the requirements of
				  42 USC
				  300 f to 300j-26. Additions to water systems
				  constructed prior to September 1, 1999, are exempt from this requirement unless
				  the additions resulted in an upgrade in system type.
Note:
					 42 USC
					 300 f to 300j-26 is entitled the federal Safe
					 Drinking Water Act.
(2)
				  CAPACITY EVALUATION SUBMITTAL. To demonstrate financial, managerial and
				  technical capacity to the department, before beginning construction of a water
				  system, the owner of a proposed community or non-transient non-community water
				  system shall submit to the department a system capacity evaluation that
				  includes all of the following:
(a) A written
				  description of the water system design that includes all of the following:
1. For groundwater systems, the proposed well
				  construction and the name of the water-bearing formation.
2. For surface water systems, the name of the
				  source water body and the intake length and intake location.
3. Pumping capacity.
4. Water treatment.
5. Water storage volume.
6. Length and diameter of water
				  mains.
7. Pressure range within the
				  water system.
8. Location of any
				  pressure reducing valves or pressure booster stations.
9. Map or plat showing the proposed water
				  system.
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 810 - Requirements for the operation and maintenance of public water systems › Subchapter I - General Operations › Section NR 810.25 - Operation and maintenance manuals

Current through June 24, 2024
Water suppliers for all community water systems providing
					 treatment, including chemical addition, shall provide training for staff in the
					 operation and maintenance of the equipment and maintain up-to-date manuals for
					 the operation and maintenance of the equipment.
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 810 - Requirements for the operation and maintenance of public water systems › Subchapter I - General Operations › Section NR 810.26 - Other requirements

Current through June 24, 2024
(1) AUTHORIZATION FOR OPERATION OF NEW
				  COMMUNITY WATER SYSTEMS OR IMPROVEMENTS TO EXISTING SYSTEMS. Before a new
				  community water system or improvements to a community water system can be
				  placed into service, written authorization of the department shall be obtained.
(a) To obtain authorization for operation of
				  a new community water system, the community water system owner shall meet the
				  following requirements:
1. An inspection of
				  the facilities shall be made by a representative of the department to determine
				  if construction is in accordance with the approved plans and specifications.
				  Deficiencies shall be corrected prior to startup or by a specified compliance
				  date, as determined by the significance of the deficiency.
2. The department shall be informed in
				  writing of the name of the certified operator who will be in charge of any
				  community water system.
3. The
				  owner of a municipal water system shall have adopted cross-connection and well
				  abandonment ordinances or rules.
4.
				  The owner of a municipal water system shall have an approved wellhead
				  protection plan.
5. The owner of
				  each community water system shall have an emergency response plan.
6. Water distribution maps as required in
				  sub. (2) shall be provided to the department by the water supplier.
7. A plan identifying all sample locations
				  for all monitoring required under the Safe Drinking Water Act shall be provided
				  to the department by the water supplier.
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 810 - Requirements for the operation and maintenance of public water systems › Subchapter II - Surface Water Treatment and Groundwater Under the Direct Influence of Surface Water Treatment Operations › Section NR 810.27 - General requirements for all surface water and groundwater under the direct influence of surface water systems

Current through June 24, 2024
(1) This subchapter
				  establishes criteria under which filtration is required as a treatment
				  technique for public water systems supplied by a surface water source or a
				  groundwater source under the direct influence of surface water. Direct
				  influence shall be determined for individual sources by the department. The
				  department determination of direct influence may be based on site-specific
				  measurements of water quality characteristics such as those stated in s.
				  NR
				  810.02(25) or documentation of well
				  construction characteristics and geology with field evaluation. These
				  regulations also establish requirements for treatment techniques in lieu of
				  maximum contaminant levels for Giardia lamblia, viruses, heterotrophic plate
				  count bacteria, Legionella, Cryptosporidium and turbidity. Treatment technique
				  requirements apply to every public water system which utilizes surface water or
				  groundwater under the direct influence of surface water and the requirements
				  consist of installing and properly operating water treatment processes which
				  reliably achieve:
(a) At least 99.9% or 3-log
				  removal or inactivation of Giardia lamblia cysts between a point where the raw
				  water is not subject to recontamination by surface water runoff and a point
				  downstream before or at the first customer.
(b) At least 99.99% or 4-log removal or
				  inactivation of viruses between a point where the raw water is not subject to
				  recontamination by surface water runoff and a point downstream before or at the
				  first customer.
(c) At least 99.9%
				  or 3-log removal of Cryptosporidium between a point where the raw water is not
				  subject to recontamination by surface water runoff and a point downstream
				  before or at the first customer for filtered systems, or Cryptosporidium
				  control under the watershed control system for unfiltered GWUDI
				  systems.
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 810 - Requirements for the operation and maintenance of public water systems › Subchapter II - Surface Water Treatment and Groundwater Under the Direct Influence of Surface Water Treatment Operations › Section NR 810.28 - Requirements for covers on water storage structures

Current through June 24, 2024
All finished water storage reservoirs and treatment plant
					 basins shall be covered. Finished water is that water which has received all
					 required treatment. Treatment plant basins contain water at various stages of
					 treatment.
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 810 - Requirements for the operation and maintenance of public water systems › Subchapter II - Surface Water Treatment and Groundwater Under the Direct Influence of Surface Water Treatment Operations › Section NR 810.29 - Basic filtration requirements

Current through June 24, 2024
Public water systems that use a surface water source shall
					 provide filtration which complies with the requirements of sub. (1), (2), (3),
					 (4), or (5) and meets the disinfection criteria specified in s.
					 NR
					 810.31(2). Public water systems that
					 use a groundwater source under the direct influence of surface water shall
					 provide filtration which complies with the specifications of sub. (1), (2),
					 (3), (4) or (5) and meets the disinfection criteria specified in s.
					 NR
					 810.31(2) within 18 months of the
					 date that a source is determined, by the department, to be under the direct
					 influence of surface water unless they meet the filtration avoidance criteria
					 in s
					 NR
					 810.30. Failure to meet the applicable requirements of
					 this section is a treatment technique violation.
(1) CONVENTIONAL FILTRATION TREATMENT.
(a) For systems using conventional filtration
					 treatment, the turbidity level of representative samples of a system's filtered
					 water shall be less than or equal to 0.3 nephelometric turbidity units (NTU) in
					 at least 95% of the measurements taken each month, measured as specified in s.
					 NR
					 809.113(1) Tables A and B.
(b) The turbidity level of representative
					 samples of a system's filtered water may not exceed one NTU, measured as
					 specified in s.
					 NR
					 809.113(1) Tables A and B.
(c) To determine compliance with par. (a),
					 turbidity measurements shall be performed on representative samples of filtered
					 water at least every 4 hours that the system serves water to the public.
(d) In lieu of the requirements of par. (c),
					 turbidity measurements from a continuous reading and recording turbidity
					 monitoring device shall be recorded at predetermined 4-hour intervals to
					 determine compliance with par. (a). The highest turbidity measurement recorded
					 at any time during the day shall be reported under s.
					 NR 809.80(7) (a)
					 1.
(e) A system that uses lime softening may
					 acidify representative samples prior to analysis if using a protocol approved
					 by the department.
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 810 - Requirements for the operation and maintenance of public water systems › Subchapter II - Surface Water Treatment and Groundwater Under the Direct Influence of Surface Water Treatment Operations › Section NR 810.295 - Filter backwash handling

Current through June 24, 2024
Public water systems that use a surface water source or
					 groundwater under the direct influence of surface water and that provide
					 filtration shall meet the requirements of s.
					 NR
					 811.860.
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 810 - Requirements for the operation and maintenance of public water systems › Subchapter II - Surface Water Treatment and Groundwater Under the Direct Influence of Surface Water Treatment Operations › Section NR 810.30 - Criteria for avoiding filtration for groundwater under the direct influence of surface water systems

Current through June 24, 2024
A public water system that uses groundwater under the
					 direct influence of surface water as a water supply source shall meet all of
					 the conditions of subs. (1) and (2), and is subject to sub. (3), unless the
					 department has determined, in writing, that filtration is required. If the
					 department determines in writing that filtration is required, the water system
					 owner shall install filtration and shall meet the criteria for filtered systems
					 specified in ss.
					 NR
					 810.29 and
					 810.31(2). Within 18
					 months of the failure of a public water system using a groundwater source under
					 the direct influence of surface water to meet any one of the requirements of
					 subs. (1) and (2), the water system owner shall install filtration and shall
					 meet the criteria for filtered systems specified in ss.
					 NR
					 810.29 and
					 810.31(2).
(1) SOURCE WATER QUALITY CONDITIONS.
(a) The fecal coliform concentration shall be
				  equal to or less than 20/100ml, or the total coliform concentration shall be
				  equal to or less than 100/100 ml, measured as specified in s.
				  NR
				  809.311(1) Table F, in representative
				  samples of the source water immediately prior to the first or only point of
				  disinfectant application in at least 90% of the measurements made for the 6
				  previous months that the system served water to the public on an ongoing basis.
				  If a system measures both fecal and total coliforms, the fecal coliform
				  criterion, but not the total coliform criterion, in this paragraph shall be
				  met.
(b) The turbidity level may
				  not exceed 5 NTU, measured as specified in s.
				  NR
				  809.113(1) Tables A and B, in
				  representative samples of the source water immediately prior to the first or
				  only point of disinfectant application unless both of the following apply:
1. The department determines that a turbidity
				  "event" was caused by circumstances that were unusual and unpredictable. A
				  turbidity "event" is a series of consecutive days during which at least one
				  turbidity measurement each day exceeds 5 NTU.
2. There have not been more than 2 turbidity
				  events in the past 12 months the water system served water to the public, or
				  more than 5 turbidity events in the past 120 months the system served water to
				  the public.
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 810 - Requirements for the operation and maintenance of public water systems › Subchapter II - Surface Water Treatment and Groundwater Under the Direct Influence of Surface Water Treatment Operations › Section NR 810.32 - Disinfection profiling and benchmarking

Current through June 24, 2024
(1) REQUIREMENTS
				  WHEN MAKING A SIGNIFICANT CHANGE IN DISINFECTION PRACTICE.
(a) Following the completion of initial
				  source water monitoring under s.
				  NR
				  809.331, the water supplier for a public water system
				  that plans to make a significant change to its disinfection practice, as
				  defined in par. (b), shall develop disinfection profiles and calculate
				  disinfection benchmarks for Giardia lamblia and viruses as described in sub.
				  (2). Prior to changing the disinfection practice, the water supplier shall
				  notify the department and shall include in this notice all of the following
				  information:
1. A completed disinfection
				  profile and disinfection benchmark for Giardia lamblia and viruses as described
				  in sub. (2).
2. A description of
				  the proposed change in disinfection practice.
3. An analysis of how the proposed change
				  will affect the current level of disinfection.
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 810 - Requirements for the operation and maintenance of public water systems › Subchapter II - Surface Water Treatment and Groundwater Under the Direct Influence of Surface Water Treatment Operations › Section NR 810.33 - Enhanced treatment requirements for Cryptosporidium

Current through June 24, 2024
(1) APPLICABILITY.
				  The requirements of this section apply to all public water systems supplied by
				  a surface water source and public water systems supplied by a groundwater
				  source under the direct influence of surface water.
(a) Wholesale systems shall comply with the
				  requirements of this section based on the population of the largest system in
				  the combined distribution system.
(b) The requirements of this section for
				  filtered systems apply to water systems required by s.
				  NR
				  810.29 to provide filtration treatment, whether or not
				  the system is currently operating a filtration system.
(c) The requirements of this section for
				  unfiltered groundwater systems under the direct influence of surface water
				  apply only to unfiltered systems that timely met and continue to meet the
				  filtration avoidance criteria in s.
				  NR
				  810.30.
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 810 - Requirements for the operation and maintenance of public water systems › Subchapter II - Surface Water Treatment and Groundwater Under the Direct Influence of Surface Water Treatment Operations › Section NR 810.34 - Cryptosporidium bin classification for filtered systems

Current through June 24, 2024
(1) Following
				  completion of the initial round of source water monitoring required under s.
				  NR
				  809.331(1), water suppliers for
				  filtered systems shall calculate an initial Cryptosporidium bin concentration
				  for each plant for which monitoring was required. Calculation of the bin
				  concentration shall use the Cryptosporidium results reported under s.
				  NR
				  809.331(1) and shall follow the
				  procedures in sub. (2) (a) to (e).
(2)
(a) For
				  filtered systems that collect a total of at least 48 samples, the bin
				  concentration is equal to the arithmetic mean of all sample
				  concentrations.
(b) For filtered
				  systems that collect a total of at least 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
				  filtered systems that serve fewer than 10,000 people and monitor for
				  Cryptosporidium for only one year, collecting 24 samples in 12 months, the bin
				  concentration is equal to the arithmetic mean of all sample
				  concentrations.
(d) For filtered
				  systems with plants operating only part of the year that monitor fewer than 12
				  months per year under s.
				  NR
				  809.331(5), the bin concentration is
				  equal to the highest arithmetic mean of all sample concentrations during any
				  year of Cryptosporidium monitoring.
(e) If the monthly Cryptosporidium sampling
				  frequency varies, water suppliers shall first calculate a monthly average for
				  each month of monitoring. Systems shall then use these monthly average
				  concentrations, rather than individual sample concentrations, in the applicable
				  calculation for bin classification in pars. (a) to (d).
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 810 - Requirements for the operation and maintenance of public water systems › Subchapter II - Surface Water Treatment and Groundwater Under the Direct Influence of Surface Water Treatment Operations › Section NR 810.35 - Cryptosporidium treatment requirements for filtered systems

Current through June 24, 2024
(1) Filtered
				  systems shall provide the level of additional treatment for Cryptosporidium
				  specified in this paragraph based on their bin classification as determined
				  under s.
				  NR
				  810.34 and according to the schedule in s.
				  NR
				  810.37.
(2) Systems shall use the following treatment
				  or management practices:
(a) Filtered systems
				  shall use one or more of the treatment and management options listed in s.
				  NR
				  810.41, termed the microbial toolbox, to comply with
				  the additional Cryptosporidium treatment required in sub. (1).
(b) Filtered systems classified in Bin 3 and
				  Bin 4 shall achieve at least 1-log of the additional Cryptosporidium treatment
				  required under sub. (1) using either one or a combination of the following: bag
				  filters, bank filtration, cartridge filters, chlorine dioxide, membranes,
				  ozone, or UV, as described in ss.
				  NR
				  810.42 to
				  810.46.
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 810 - Requirements for the operation and maintenance of public water systems › Subchapter II - Surface Water Treatment and Groundwater Under the Direct Influence of Surface Water Treatment Operations › Section NR 810.36 - Cryptosporidium treatment requirements for groundwater under the direct influence of surface water systems that do not filter

Current through June 24, 2024
Section
					 NR
					 811.42 requires filtration for all surface water
					 sources. The following applies only to GWUDI systems not required to
					 filter.
(1) DETERMINATION OF MEAN
				  CRYPTOSPORIDIUM LEVEL.
(a) Following
				  completion of the initial source water monitoring required under s.
				  NR
				  809.331(1), water suppliers for
				  unfiltered systems shall calculate the arithmetic mean of all Cryptosporidium
				  sample concentrations reported under s.
				  NR
				  809.331(1). Water suppliers shall
				  report this value to the department for approval no later than 6 months after
				  the month the system is required to complete initial source water monitoring
				  based on the schedule in s.
				  NR
				  809.331(3).
(b) Following completion of the second round
				  of source water monitoring required under s.
				  NR
				  809.331(2), water suppliers for
				  unfiltered systems shall calculate the arithmetic mean of all Cryptosporidium
				  sample concentrations reported under s.
				  NR
				  809.331(2). Water suppliers shall
				  report this value to the department for approval no later than 6 months after
				  the month the system is required to complete the second round of source water
				  monitoring based on the schedule in s.
				  NR
				  809.331(3).
(c) If the monthly Cryptosporidium sampling
				  frequency varies, water suppliers shall first calculate a monthly average for
				  each month of monitoring. Systems shall then use these monthly average
				  concentrations, rather than individual sample concentrations, in the
				  calculation of the mean Cryptosporidium level in par. (a) or (b).
(d) The report to the department of the mean
				  Cryptosporidium levels calculated under pars. (a) and (b) shall include a
				  summary of the source water monitoring data used for the calculation.
(e) Failure to comply with the
				  conditions of this subsection is a violation of the treatment technique
				  requirement.
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 810 - Requirements for the operation and maintenance of public water systems › Subchapter II - Surface Water Treatment and Groundwater Under the Direct Influence of Surface Water Treatment Operations › Section NR 810.37 - Cryptosporidium treatment requirement compliance schedule

Current through June 24, 2024
(1) Following
				  initial bin classification under s.
				  NR
				  810.34(3), filtered systems shall
				  provide the level of treatment for Cryptosporidium required under s.
				  NR
				  810.35 according to the schedule in sub.
				  (3).
(2) Following initial
				  determination of the mean Cryptosporidium level under s.
				  NR
				  810.36(1) (a), unfiltered systems
				  shall provide the level of treatment for Cryptosporidium required under s.
				  NR
				  810.36 according to the schedule in sub.
				  (3).
(3) Cryptosporidium treatment
				  compliance dates.
Cryptosporidium Treatment Compliance Dates
					 Table
Systems that
Shall comply with
Cryptosporid-
serve...
ium
treatment requirements no later
than... 
								1
At least 100,000
April 1, 2012.
people
From 50,000 to
October 1, 2012.
99,999 people
From 10,000 to
October 1, 2013.
49,999 people
Fewer than
October 1, 2014.
10,000 people
1 The department may allow up to an additional 2 years for
					 complying with the treatment requirement for systems making capital
					 improvements.
(4) If the
				  bin classification for a filtered system changes following the second round of
				  source water monitoring, as determined under s.
				  NR
				  810.34, the system shall provide the level of
				  treatment for Cryptosporidium required under s.
				  NR
				  810.35 on a schedule approved by the
				  department.
(5) If the mean
				  Cryptosporidium level for an unfiltered GWUDI system changes following the
				  second round of monitoring, as determined under s.
				  NR
				  810.36, and if the system is required to provide a
				  different level of Cryptosporidium treatment under s.
				  NR
				  810.36 due to this change, the system shall meet this
				  treatment requirement on a schedule approved by the department.
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 810 - Requirements for the operation and maintenance of public water systems › Subchapter II - Surface Water Treatment and Groundwater Under the Direct Influence of Surface Water Treatment Operations › Section NR 810.40 - Recordkeeping requirements

Current through June 24, 2024
(1) Public water
				  systems shall keep results from the initial round of source water monitoring
				  under s.
				  NR
				  809.331(1) and the second round of
				  source water monitoring under s.
				  NR
				  809.331(2) until 3 years after bin
				  classification under s.
				  NR
				  810.34 for filtered systems or determination of the
				  mean Cryptosporidium level under s.
				  NR
				  810.35 for unfiltered GWUDI systems for the particular
				  round of monitoring.
(2) Public
				  water systems shall keep any notification to the department that the systems
				  will not conduct source water monitoring due to meeting the criteria of s.
				  NR
				  809.331(4) for 3 years from the date
				  of notification.
(3) Public water
				  systems shall keep the results of treatment monitoring associated with
				  microbial toolbox options under ss.
				  NR
				  810.42 to for 810.463 years from the date of
				  monitoring.
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 810 - Requirements for the operation and maintenance of public water systems › Subchapter III - Toolbox Options for Meeting Enhanced Treatment for Cryptosporidium Requirements › Section NR 810.41 - Microbial toolbox options

Current through June 24, 2024
(1)
(a) Public water systems receive the
				  treatment credits listed in the table in sub. (2) by meeting the conditions for
				  microbial toolbox options described in ss.
				  NR
				  810.42 to
				  810.46. Systems apply these treatment
				  credits to meet the treatment requirements in s.
				  NR
				  810.35 or
				  810.36, as applicable.
(b) Unfiltered GWUDI systems are eligible for
				  treatment credits for the microbial toolbox options described in s.
				  NR
				  810.46 only.
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 810 - Requirements for the operation and maintenance of public water systems › Subchapter III - Toolbox Options for Meeting Enhanced Treatment for Cryptosporidium Requirements › Section NR 810.43 - Pre-filtration treatment toolbox components

Current through June 24, 2024
(1)
				  PRESEDIMENTATION. Systems receive 0.5 -log Cryptosporidium treatment credit for
				  a presedimentation basin during any month the process meets the criteria in
				  this subsection.
(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 system shall continuously add a
				  coagulant to the presedimentation basin.
(c) The presedimentation basin shall achieve
				  the following performance criteria:
1.
				  Demonstrates at least 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).
2.
				  Complies with department-approved performance criteria that demonstrate at
				  least 0.5-log mean removal of micron-sized particulate material through the
				  presedimentation process.
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 810 - Requirements for the operation and maintenance of public water systems › Subchapter III - Toolbox Options for Meeting Enhanced Treatment for Cryptosporidium Requirements › Section NR 810.44 - Treatment performance toolbox components

Current through June 24, 2024
(1) COMBINED FILTER
				  PERFORMANCE. Public water systems using conventional filtration treatment or
				  direct filtration treatment receive an additional 0.5-log Cryptosporidium
				  treatment credit during any month the system meets the criteria in this
				  subsection. Combined filter effluent (CFE) turbidity shall be less than or
				  equal to 0.15 NTU in at least 95% of the measurements. Turbidity shall be
				  measured as described in s.
				  NR
				  809.113(1), Tables A and B.
(2) INDIVIDUAL FILTER PERFORMANCE. Public
				  water systems using conventional filtration treatment or direct filtration
				  treatment receive 0.5 -log Cryptosporidium treatment credit, which may be in
				  addition to the 0.5-log credit under sub. (1), during any month the system
				  meets the criteria in this subsection. Compliance with these criteria shall be
				  based on individual filter turbidity monitoring as described in s.
				  NR
				  809.113(1) Tables A and B, as
				  applicable.
(a) The filtered water turbidity
				  for each individual filter shall be less than or equal to 0.15 NTU in at least
				  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) Any system that has
				  received treatment credit for individual filter performance and fails to meet
				  the requirements of par. (a) or (b) during any month does not receive a
				  treatment technique violation under s.
				  NR
				  810.35(3) if the department
				  determines the following:
1. The failure was
				  due to unusual and short-term circumstances that could not reasonably be
				  prevented through optimizing treatment plant design, operation, and
				  maintenance.
2. The system has
				  experienced no more than 2 such failures in any calendar year.
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 810 - Requirements for the operation and maintenance of public water systems › Subchapter IV - Inactivation Toolbox Components and CT Tables › Section NR 810.46 - Inactivation toolbox components

Current through June 24, 2024
(1) CALCULATION OF
				  CT VALUES.
(a) CT is the product of the
				  disinfectant contact time (T, in minutes) and disinfectant concentration (C, in
				  milligrams per liter). Water suppliers for systems with treatment credit for
				  chlorine dioxide or ozone under sub. (2) or (3) shall calculate CT at least
				  once each day, with both C and T measured during peak hourly flow as specified
				  in s.
				  NR
				  809.563(1), Table R.
(b) Water suppliers for systems with several
				  disinfection segments in sequence may calculate CT for each segment. In this
				  section, "disinfection segment" means a treatment unit process with a
				  measurable disinfectant residual level and a liquid volume. Under this
				  approach, water suppliers for systems shall add the Cryptosporidium CT values
				  in each segment to determine the total CT for the treatment plant.
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 810 - Requirements for the operation and maintenance of public water systems › Subchapter IV - Inactivation Toolbox Components and CT Tables › Section NR 810.47 - CT table for giardia when using free chlorine at 0.5°C or lower

Current through June 24, 2024
See
					 PDF
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 810 - Requirements for the operation and maintenance of public water systems › Subchapter IV - Inactivation Toolbox Components and CT Tables › Section NR 810.53 - CT table for viruses when using free chlorine

Current through June 24, 2024
CT Values for Inactivation of Viruses by Free
					 Chlorine
Log Inactivation
Temperature, °C
1.0 pH
2.0 pH
3.0 pH
4.0 pH
6 - 9
10
6 - 9
10
6 - 9
10
6 - 9
10
0.5
3
23
6
45
9
66
12
90
5
2
15
4
30
6
44
8
60
10
2
11
3
22
4
33
6
45
15
1
8
2
15
3
22
4
30
20
1
6
1
11
2
16
3
22
25
1
3
1
7
1
11
2
15
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 810 - Requirements for the operation and maintenance of public water systems › Subchapter IV - Inactivation Toolbox Components and CT Tables › Section NR 810.54 - CT table for Giardia lamblia when using chlorine dioxide

Current through June 24, 2024
CT Values for Inactivation of Giardia lamblia Cysts by
					 Chlorine Dioxide
Inactivation
Temperature, °C
[LESS than]=1
5
10
15
20
25
0.5-log
10
4.3
4
3.2
2.5
2
1-log
21
8.7
7.7
6.3
5
3.7
1.5-log
32
13
12
10
7.5
5.5
2-log
42
17
15
13
10
7.3
2.5-log
52
22
19
16
13
9
3-log
63
26
23
19
15
11
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 810 - Requirements for the operation and maintenance of public water systems › Subchapter IV - Inactivation Toolbox Components and CT Tables › Section NR 810.55 - CT table for viruses when using chlorine dioxide

Current through June 24, 2024
CT Values for Inactivation of Viruses by Chlorine Dioxide
					 pH 6-9
Inactivation
Temperature, °C
[LESS than]= 1
5
10
15
20
25
2-log
8.4
5.6
4.2
2.8
2.1
1.4
3-log
25.6
17.1
12.8
8.6
6.4
4.3
4-log
50.1
33.4
25.1
16.7
12.5
8.4
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 810 - Requirements for the operation and maintenance of public water systems › Subchapter IV - Inactivation Toolbox Components and CT Tables › Section NR 810.56 - CT table for Cryptosporidium when using chlorine dioxide

Current through June 24, 2024
1
Log credit
Water Temperature, °C
[LESS than]= 0.5
1
2
3
5
7
10
15
20
25
30
0.25
159
153
140
128
107
90
69
45
29
19
12
0.5
319
305
279
256
214
180
138
89
58
38
24
1.0
637
610
558
511
429
360
277
179
116
75
49
1.5
956
915
838
767
643
539
415
268
174
113
73
2.0
1275
1220
1117
1023
858
719
553
357
232
150
98
2.5
1594
1525
1396
1278
1072
899
691
447
289
188
122
3.0
1912
1830
1675
1534
1286
1079
830
536
347
226
147
1Systems may use this equation to determine log credit
					 between the indicated values: Log credit = (0.001506 x (1.09116)Temp) x
					 CT.
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 810 - Requirements for the operation and maintenance of public water systems › Subchapter IV - Inactivation Toolbox Components and CT Tables › Section NR 810.57 - CT table for Giardia lamblia when using chloramines

Current through June 24, 2024
CT Values for Inactivation of Giardia lamblia Cysts by
					 Chloramine pH 6-9
Inactivation
Temperature, °C
[LESS than]= 1
5
10
15
20
25
0.5-log
635
365
310
250
185
125
1-log
1,270
736
615
500
370
250
1.5-log
1,900
1,100
930
750
550
375
2-log
2,535
1,470
1,230
1,000
735
500
2.5-log
3,170
1,830
1,540
1,250
915
625
3-log
3,800
2,200
1,850
1,500
1,100
750
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 810 - Requirements for the operation and maintenance of public water systems › Subchapter IV - Inactivation Toolbox Components and CT Tables › Section NR 810.58 - CT table for viruses when using chloramines

Current through June 24, 2024
CT Values for Inactivation of Viruses by Chloramine
Inactivation
Temperature, °C
[LESS than]=1
5
10
15
20
25
2-log
1,243
857
643
428
321
214
3-log
2,063
1,423
1,067
712
534
356
4-log
2,883
1,988
1,491
994
746
497
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 810 - Requirements for the operation and maintenance of public water systems › Subchapter IV - Inactivation Toolbox Components and CT Tables › Section NR 810.59 - CT table for Giardia lamblia when using ozone

Current through June 24, 2024
CT Values for Inactivation of Giardia lamblia Cysts by
					 Ozone
Inactivation
Temperature, °C
[LESS than]=1
5
10
15
20
25
0.5-log
0.48
0.32
0.23
0.16
0.12
0.08
1-log
0.97
0.63
0.48
0.32
0.24
0.16
1.5-log
1.5
0.95
0.72
0.48
0.36
0.24
2-log
1.9
1.3
0.95
0.63
0.48
0.32
2.5-log
2.4
1.6
1.2
0.79
0.60
0.40
3-log
2.9
1.9
1.43
0.95
0.72
0.48
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 810 - Requirements for the operation and maintenance of public water systems › Subchapter IV - Inactivation Toolbox Components and CT Tables › Section NR 810.60 - CT table for viruses when using ozone

Current through June 24, 2024
CT Values for Inactivation of Viruses by Ozone
Inactivation
Temperature, °C
[LESS than]=1
5
10
15
20
25
2-log
0.9
0.6
0.5
0.3
0.25
0.15
3-log
1.4
0.9
0.8
0.5
0.4
0.25
4-log
1.8
1.2
1.0
0.6
0.5
0.3
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 810 - Requirements for the operation and maintenance of public water systems › Subchapter IV - Inactivation Toolbox Components and CT Tables › Section NR 810.61 - CT table for Cryptosporidium when using ozone

Current through June 24, 2024
1
Log credit
Water Temperature, °C
[LESS than]=0.5
1
2
3
5
7
10
15
20
25
30
0.25
6.0
5.8
5.2
4.8
4.0
3.3
2.5
1.6
1.0
0.6
0.39
0.5
12
12
10
9.5
7.9
6.5
4.9
3.1
2.0
1.2
0.78
1.0
24
23
21
19
16
13
9.9
6.2
3.9
2.5
1.6
1.5
36
35
31
29
24
20
15
9.3
5.9
3.7
2.4
2.0
48
46
42
38
32
26
20
12
7.8
4.9
3.1
2.5
60
58
52
48
40
33
25
16
9.8
6.2
3.9
3.0
72
69
63
57
47
39
30
19
12
7.4
4.7
1Systems may use this equation to determine log credit
					 between the indicated values: Log credit = (0.0397 x (1.09757)Temp) x
					 CT.
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 810 - Requirements for the operation and maintenance of public water systems › Subchapter IV - Inactivation Toolbox Components and CT Tables › Section NR 810.62 - UV dose table for Cryptosporidium, Giardia lamblia, and viruses

Current through June 24, 2024
Log credit
Cryptosporidium UV dose
								(mJ/cm2)
Giardia lamblia UV dose
								(mJ/cm2)
Virus UV dose (mJ/cm2)
0.5
1.6
1.5
39
1.0
2.5
2.1
58
1.5
3.9
3.0
79
2.0
5.8
5.2
100
2.5
8.5
7.7
121
3.0
12
11
143
3.5
15
15
163
4.0
22
22
186
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 811 - Requirements For The Operation And Design Of Community Water Systems › Section NR 811.01 - Applicability

Current through June 24, 2024
This chapter governs the general operation, design and
				  construction of community water systems and the construction of any water
				  system serving 7 or more single family homes, 10 or more duplex living units,
				  10 or more mobile homes, 10 or more condominium units or 10 or more apartment
				  units. One duplex equals 2 living units. The standards for design and
				  construction shall be considered minimum standards for new facilities and the
				  minimum standards to which existing facilities shall be upgraded when
				  improvements are undertaken at those facilities except for systems where all of
				  the living units are owned by a single owner and the owner provides information
				  indicating that less than 25 year-round residents will be served. These
				  standards may be imposed on a case-by-case basis to existing facilities when
				  the department determines that a health risk exists due to the water system.
				  The owner shall be responsible for ensuring that the requirements of this
				  chapter are met.
The authority to promulgate and enforce these rules is
					 contained in chs. 280 and 281, Stats. Pursuant to s.
					 299.97, Stats., any person who
					 violates this chapter shall forfeit not less than $10 nor more than $5,000 for
					 each violation. Each day of continued violation is a separate
					 offense.
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 811 - Requirements For The Operation And Design Of Community Water Systems › Section NR 811.03 - Alternative requirements

Current through June 24, 2024
(1) If the owner of
				a proposed reviewable project determines that compliance with the design
				requirements of this chapter is impracticable, the owner may submit in writing
				to the department prior to submission of final plans a request to use
				alternative criteria. This request shall contain the reasons that compliance
				with the design criteria is impracticable and alternative criteria for which
				department approval is sought and all pertinent facts, data, reports and
				studies supporting the proposed alternative.
(2) If the department determines that
				compliance with the design requirements of this chapter would be impracticable
				in any specific case, or that an alternative proposed has additional benefits
				with adequate safeguards, it may approve alternative criteria which are in
				substantial compliance with the requirements of this chapter.
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 811 - Requirements For The Operation And Design Of Community Water Systems › Section NR 811.04 - Drinking water standards

Current through June 24, 2024
Where practical, the quality of the raw water source shall
				  meet the primary maximum contaminant levels of ch. NR 809 and other applicable
				  requirements of ch. NR 809 and this chapter without treatment. In all cases,
				  the quality of finished water supplied to consumers at the point-of-entry to
				  the distribution system shall meet the primary drinking water standards
				  contained in ch. NR 809. Department-approved water treatment shall be installed
				  where necessary to meet this requirement.
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 811 - Requirements For The Operation And Design Of Community Water Systems › Section NR 811.05 - Underground placement of substances

Current through June 24, 2024
The use of any well, drillhole or water system for the
				  underground placement of any substance shall be prohibited unless it is a
				  department approved activity necessary for the construction, rehabilitation or
				  routine operation of the well or water system.
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 811 - Requirements For The Operation And Design Of Community Water Systems › Section NR 811.06 - Cross-connections and interconnections

Current through June 24, 2024
Unprotected cross-connections are prohibited.
				  Cross-connections shall be protected as required in s.
				  SPS
				  382.41. Water system interconnections are prohibited
				  except as provided in s.
				  NR
				  811.07.
Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 811 - Requirements For The Operation And Design Of Community Water Systems › Section NR 811.07 - Interconnections with other acceptable water sources

Current through June 24, 2024
Interconnections between the public water supply system and
				  another source of water are prohibited unless permitted by the department in
				  individual cases. Approval of the department shall be obtained prior to making
				  the interconnection.