Washington Revised Code Title 90. Water Rights--Environment § 90.03.675. Stormwater retention ponds--Mosquito abatement

(1) A county, city, town, water-sewer district, or flood control zone district constructing, improving, operating, or maintaining stormwater control facilities under chapter 35.67, 35.92, 36.89, 36.94, 57.08, or 86.15 RCW that include stormwater retention ponds, also known as wet ponds, wet retention ponds, or wet extended detention ponds, as part of a stormwater control facility for which the primary function of the pond is to detain stormwater, must:

(2) A county, city, town, water-sewer district, or flood control zone district operating or maintaining stormwater control facilities must, except where mosquito control districts are established, when notified by the department of health or a local health jurisdiction of the positive identification of west nile virus or other mosquito-borne human disease viruses in mosquitoes, birds, or mammals, including humans, consult with the department of health or a mosquito control district concerning which integrated pest management strategies, as defined under chapter 17.15 RCW, for mosquito control or abatement in stormwater retention ponds would be most effective to prevent the spread of the disease.

(3) Where a mosquito control district is established, when notified by the department of health or a local health jurisdiction of the positive identification of west nile virus or other mosquito-borne human disease viruses in mosquitoes, birds, or mammals, including humans, the mosquito control district is responsible for mosquito control or abatement in stormwater retention ponds.