The bill amends existing Washington state laws regarding stormwater control facilities and the jurisdiction of counties. It allows counties to finance, acquire, construct, and maintain stormwater control facilities either independently or in collaboration with other governmental agencies. A significant addition is the requirement for counties to obtain prior consent from cities or towns before constructing or improving any stormwater control facility or highway within their limits. The bill also introduces provisions for notifying diking or drainage districts when a county intends to extend or improve stormwater control facilities that interact with these districts, while ordinary maintenance does not require such notification.

Additionally, the bill outlines the financial aspects related to stormwater control facilities. It allows counties to set rates and charges for services related to these facilities, with specific considerations for benefits received and land use characteristics. A notable insertion is the provision for a minimum ten percent reduction in rates for new or remodeled commercial buildings that utilize rainwater harvesting systems. Furthermore, starting in fiscal year 2024, service charges collected for stormwater facilities operated by diking or drainage districts may be deposited into the revenue accounts of those districts, enhancing their financial resources for maintenance and operation.

Statutes affected:
Original Bill: 36.89.050, 36.89.080
Substitute Bill: 36.89.050, 36.89.080
Engrossed Substitute: 36.89.050, 36.89.080