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 810.42 - Source toolbox components

Current through June 24, 2024
(1) WATERSHED
				  CONTROL PROGRAM. Systems receive 0.5 -log Cryptosporidium treatment credit for
				  implementing a watershed control program that meets the requirements of this
				  section.
(a) Water suppliers for systems that
				  intend to apply for the watershed control program credit shall notify the
				  department of this intent no later than 2 years prior to the treatment
				  compliance date applicable to the system in s.
				  NR
				  810.37.
(b) Water suppliers for systems shall submit
				  to the department a proposed watershed control plan no later than one year
				  before the applicable treatment compliance date in s.
				  NR
				  810.37. The department shall approve the watershed
				  control plan for the system to receive watershed control program treatment
				  credit. The watershed control plan shall include the following elements:
1. Identification of an "area of influence"
				  outside of which the likelihood of Cryptosporidium or fecal contamination
				  affecting the treatment plant intake is not significant. The area of influence
				  is the area to be evaluated in future watershed surveys under subd.
				  2.
2. Identification of both
				  potential and actual sources of Cryptosporidium contamination and an assessment
				  of the relative impact of these sources on the system's source water
				  quality.
3. An analysis of the
				  effectiveness and feasibility of control measures that could reduce
				  Cryptosporidium loading from sources of contamination to the system's source
				  water.
4. A statement of goals and
				  specific actions the system will undertake to reduce source water
				  Cryptosporidium levels. The plan shall explain how the actions are expected to
				  contribute to specific goals, identify watershed partners and their roles,
				  identify resource requirements and commitments, and include a schedule for plan
				  implementation with deadlines for completing specific actions identified in the
				  plan.
(c) Public water
				  systems with existing watershed control programs in place on or before January
				  5, 2006, are eligible to seek this credit. The watershed control plans shall
				  meet the criteria in par. (b) and shall specify ongoing and future actions that
				  will reduce source water Cryptosporidium levels.
(d) If the department does not respond to a
				  water supplier regarding approval of a watershed control plan submitted under
				  this section and the system meets the other requirements of this section, the
				  watershed control program will be considered approved and 0.5 log
				  Cryptosporidium treatment credit will be awarded unless and until the
				  department subsequently withdraws the approval.
(e) Systems shall complete the following
				  actions to maintain the 0.5-log credit:
1.
				  Submit an annual watershed control program status report to the department. The
				  annual watershed control program status report shall describe the system's
				  implementation of the approved plan and assess the adequacy of the plan to meet
				  its goals. The status report shall explain how the system is addressing any
				  shortcomings in plan implementation, including those previously identified by
				  the department or as the result of the watershed survey conducted under subd.
				  2. It shall also describe any significant changes that have occurred in the
				  watershed since the last watershed sanitary survey. If a system determines
				  during implementation that making a significant change to its approved
				  watershed control program is necessary, the water supplier shall notify the
				  department prior to making any changes. If any change is likely to reduce the
				  level of source water protection, the water supplier shall also list in this
				  notification the actions the system will take to mitigate this
				  effect.
2. Undergo a watershed
				  sanitary survey every 3 years for community water systems and every 5 years for
				  noncommunity water systems and submit the survey report to the department. The
				  survey shall be conducted according to department guidelines and by persons the
				  department approves.
a. The watershed sanitary
				  survey shall meet the following criteria: encompass the region identified in
				  the department-approved watershed control plan as the area of influence; assess
				  the implementation of actions to reduce source water Cryptosporidium levels;
				  and identify any significant new sources of Cryptosporidium.
b. If the department determines that
				  significant changes may have occurred in the watershed since the previous
				  watershed sanitary survey, systems shall undergo another watershed sanitary
				  survey by a date the department requires, which may be earlier than the regular
				  date in this subdivision.
3. The water supplier for the system shall
				  make the watershed control plan, annual status reports, and watershed sanitary
				  survey reports available to the public upon request. These documents shall be
				  in a plain language style and include criteria by which to evaluate the success
				  of the program in achieving plan goals.
(f) If the department determines that a
				  system is not complying with the approved watershed control plan, the
				  department may withdraw the watershed control program treatment
				  credit.