The Clean Water Division develops new stormwater facilities  and implements updates to older facilities that collect and treat polluted storm runoff. These projects control stormwater flows and help:

• Reduce pollution in our water runoff.
• Improve water quality treatment.
• Reduce stream erosion and protect river habitat.
• Keep our waterways safe for recreation and other uses.

Projects vary in scope and size, but may include installing rain gardens or wetlands for improved water quality treatment, expanding water storage, modifying inlets and outlets, and repairing or replacing aging facilities. Projects are funded by clean water fees and state and federal grants.

Stormwater Capital Plan

2025-2030 Stormwater Capital Plan

Active projects

Learn about active Clean Water projects and see a map of their locations at the Public Works Projects page.