Source: http://www.allianceforwaterefficiency.org/Washington-Policy-Info-2012.aspx
Timestamp: 2019-04-19 06:35:49+00:00

Document:
Below are results for Washington from the 2011/2012 Water Efficiency and Conservation State Scorecard survey.
Department of Ecology also has some authorities regarding water use efficiency.
"(1) … (b) Municipal water suppliers will be considered in compliance with this section if any of the following conditions are satisfied: (i) Distribution system leakage calculated in accordance with subsection (2) of this section is ten percent or less for the last three-year average; (ii) Distribution system leakage calculated under subsection (3) of this section meets the numerical standards for the approved alternative methodology for the last three-year average; (iii) For systems serving less than five hundred total connections, distribution system leakage calculated in accordance with subsection (2) of this section is twenty percent or less for the last three-year average and the steps outlined in subsection (5) of this section are completed; or (iv) A water loss control action plan has been developed and implemented under subsection (4) of this section and the system is meeting the implementation schedule... (4) If the average distribution system leakage for the last three years does not meet the standard calculated under subsection (1)(b)(i), (ii), or (iii) of this section, the municipal water supplier shall develop and implement a water loss control action plan... The following items shall be included in the water loss control action plan:..."
WASH. ADMIN. CODE § 246-290-100: "(2) Purveyors . . . shall submit a water system plan for review and approval by the department . . . . (4) In order to demonstrate system capacity, the water system plan shall address the following elements, as a minimum, for a period of at least twenty years into the future: . . . (f) Water resource analysis, including: . . . (iii) A water shortage response plan as a component of the reliability and emergency response requirements under WAC 246-290-420."
WASH. ADMIN. CODE § 246-290-100: "(2) Purveyors . . . shall submit a water system plan for review and approval by the department: (a) Systems having one thousand or more services. . . . (4) In order to demonstrate system capacity, the water system plan shall address the following elements, as a minimum, for a period of at least twenty years into the future: . . . (f) Water resource analysis, including: (i) A water use efficiency program. Municipal water suppliers must meet the requirements in WAC 246-290-810. . . . (vii) For systems serving one thousand or more total connections, an evaluation of opportunities for the use of reclaimed water, where they exist . . . . (j) Financial program, including demonstration of financial viability by providing: . . . (iv) An evaluation that has considered:. . . (B) The feasibility of adopting and implementing a rate structure that encourages water demand efficiency."
Small water system management programs shall include, according to WASH. ADMIN. CODE § 246-290-105: "(g) A water use efficiency program. Municipal water suppliers must meet the requirements in WAC 246-290-810 . . . . (l) An evaluation that has considered the feasibility of adopting and implementing a rate structure that encourages water demand efficiency."
WASH. ADMIN. CODE § 246-290-100: "(10) The purveyor shall update the plan and obtain department approval at least every six years."
WASH. ADMIN. CODE § 246-290-810 contains a list of what must be included in a water use efficiency program.
WASH. ADMIN. CODE § 246-290-820 contains a system leakage standard and requirement.
"(1) The elected governing board or governing body of the public water system shall establish water use efficiency goals . . . . (6) Water use efficiency goals must include: . . . . (d) Implementation schedule for each water use efficiency measure selected under WAC 246-290-810(4) . . . (7) The governing board or governing body of the public water system shall evaluate and reestablish water use efficiency goals . . . at least every six years and as part of a water system plan approval . . . ."
Yes, through the Office of Drinking Water.

References: § 246
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