Wisconsin Administrative Code › Department of Natural Resources › NR 800 - Environmental Protection - Water Supply › Chapter NR 809 - Safe Drinking Water › Subchapter II - Control of Lead and Copper › Section NR 809.55 - Reporting requirements for lead and copper

Current through June 24, 2024
All water suppliers shall report all of the following
					 information to the department in accordance with this section:
(1) REPORTING REQUIREMENTS FOR TAP WATER
				  MONITORING FOR LEAD AND COPPER AND FOR WATER QUALITY PARAMETER MONITORING.
(a) All lead samples that are detected shall
				  be quantified. Any sample below the method detection limit shall be calculated
				  at zero for the purposes of determining compliance with s.
				  NR
				  809.54(3) (c).
(b) All copper samples that are detected
				  shall be quantified. Any sample below the method detection limit shall be
				  calculated as zero for the purposes of determining compliance with s.
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				  809.54(3) (c).
(c) Except as provided in subd. 8., a water
				  supplier shall report the following information for all tap water samples
				  specified in s.
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				  809.547 and for all water quality parameter samples
				  specified in s.
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				  809.548 within the first 10 days following the end of
				  each applicable monitoring period specified in ss.
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				  809.547,
				  809.548 and
				  809.549, which is 6 months, annually,
				  every 3 years, or every 9 years:
1. The
				  results of all tap samples for lead and copper including the location of each
				  site and the criteria under s.
				  NR
				  809.547(1) (c), (d), (e), (f) or (g)
				  under which the site was selected for the public water system's sampling pool.
				  For monitoring periods with a duration less than six months, the end of the
				  monitoring period is the last date samples can be collected during that period
				  as specified in ss.
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				  809.547 and
				  809.548.
2. Documentation for each tap water lead or
				  copper sample for which the water supplier requests invalidation pursuant to s.
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				  809.547(6) (b).
3. At a time specified by the department, or
				  if no specific time is designated by the department, then as early as possible
				  prior to the addition of a new source or any long-term change in water
				  treatment, a water supplier for a public water system deemed to have optimized
				  corrosion control under s.
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				  809.542(2) (c), a public water system
				  subject to reduced monitoring pursuant to s.
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				  809.547(4) (d), or a public water
				  system subject to a monitoring waiver pursuant to s.
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				  809.547(7) shall submit written
				  documentation to the department describing the change or addition. The
				  department must review and approve the addition of a new source or long-term
				  change in treatment to the public water system before it is implemented by the
				  water supplier. Examples of long-term treatment changes include the addition of
				  a new treatment process or modification of an existing treatment process.
				  Examples of modifications include switching secondary disinfectants, switching
				  coagulants, for example, alum to ferric chloride, and switching corrosion
				  inhibitor products, for example, orthophosphate to blended phosphate. Long-term
				  changes may include dose changes to existing chemicals if the water supplier is
				  planning long-term changes to the public water system finished water pH or
				  residual inhibitor concentration. Long-term treatment changes may not include
				  chemical dose fluctuations associated with daily raw water quality
				  changes.
4. The
				  90th percentile lead and copper concentrations
				  measured from among all lead and copper tap water samples collected during each
				  monitoring period, calculated in accordance with s.
				  NR
				  809.54(3) (c), unless the department
				  calculates the public water system's 90 th percentile lead and copper levels
				  under sub. (8).
5. With the
				  exception of initial tap sampling conducted pursuant to s.
				  NR
				  809.547(4) (a), the water supplier
				  shall designate any site which was not sampled during previous monitoring
				  periods, and include an explanation of why sampling sites have
				  changed;
6. The results of all tap
				  samples for pH and, where applicable, alkalinity, calcium, conductivity,
				  temperature and orthophosphate or silica collected under s.
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				  809.548(2) to (5);
7. The results of all samples collected at
				  the entry points to the distribution system for applicable water quality
				  parameters under s.
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				  809.548(2) to (5).
8. A water supplier shall report the results
				  of all water quality parameter samples collected under s.
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				  809.548(3) to (5) during each 6-month
				  monitoring period specified in s.
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				  809.548(4) within the first 10 days
				  following the end of the monitoring period unless the department has specified
				  a more frequent reporting requirement.
(d) For the water supplier of a non-transient
				  non-community water system, or the water supplier of a community water system
				  meeting the criteria of s.
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				  809.546(2) (g) 1. and 2., that does
				  not have enough taps that can provide first-draw samples, the water supplier
				  shall complete one of the following:
1.
				  Provide written documentation to the department identifying standing times and
				  locations for enough non-first-draw samples to make up its sampling pool under
				  s.
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				  809.547(1) by the start of the first
				  applicable monitoring period under s.
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				  809.547(4) that commences after April
				  11, 2000, unless the department has waived prior departmental approval of
				  non-first-draw sample sites selected by the water supplier pursuant to s.
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				  809.547(2) (e).
2. If the department has waived prior
				  approval of non-first-draw sample sites selected by the water supplier,
				  identify, in writing, each site that did not meet the 6-hour minimum standing
				  time and the length of standing time for that particular substitute sample
				  collected pursuant to s.
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				  809.547(2) (e) and include this
				  information with the lead and copper tap sample results required to be
				  submitted pursuant to par. (c) 1.
(e) No later than 60 days after the addition
				  of a new source or any change in water treatment, unless the department
				  requires earlier notification, a water supplier for a public water system
				  deemed to have optimized corrosion control under s.
				  NR
				  809.542(2) (c), a public water system
				  subject to reduced monitoring pursuant to s.
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				  809.547(4) (d), or a public water
				  system subject to a monitoring waiver pursuant to s.
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				  809.547(7), shall send written
				  documentation to the department describing the change.
Note:
In those instances where prior
					 department approval of the treatment change or new source is not required, the
					 water supplier are encouraged to provide the notification to the department
					 beforehand to minimize the risk the treatment change or new source will
					 adversely affect optimal corrosion control.
(f) The water supplier of any small water
				  system applying for a monitoring waiver under s.
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				  809.547(7) or subject to a waiver
				  granted pursuant to s.
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				  809.547(7) (c), shall provide the
				  following information to the department in writing by the specified deadline:
1. By the start of the first applicable
				  monitoring period in s.
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				  809.547(4), the water supplier of any
				  small water system applying for a monitoring waiver shall provide the
				  documentation required to demonstrate that the public water system meets the
				  waiver criteria of s.
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				  809.547(7) (a) and (b).
2. No later than 9 years after the monitoring
				  previously conducted pursuant to s.
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				  809.547(7) (b) or (d) 1., the water
				  supplier of each small water system desiring to maintain the monitoring waiver
				  for a public water system shall provide the information required by s.
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				  809.547(7) (d) 1. and 2.
3. No later than 60 days after the water
				  supplier becomes aware that the public water system is no longer free of
				  lead-containing or copper-containing material, as appropriate, the water
				  supplier of each small water system with a monitoring waiver shall provide
				  written notification to the department, setting forth the circumstances
				  resulting in the lead-containing and copper-containing materials being
				  introduced into the public water system and what corrective action, if any, the
				  water supplier plans to remove these materials.
4. The water supplier of any small water
				  system with a waiver granted prior to April 11, 2000 and that has not
				  previously met the requirements of s.
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				  809.547(7) (b) shall provide the
				  information required by that paragraph as required by the department.
(g) The water supplier for each
				  groundwater system that limits water quality parameter monitoring to a subset
				  of entry points under s.
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				  809.548(3) (c) shall provide, by the
				  commencement of the monitoring, written correspondence to the department that
				  identifies the selected entry points and includes information sufficient to
				  demonstrate that the sites are representative of water quality and treatment
				  conditions throughout the public water system.