No. Stormwater is conveyed directly to creeks, streams, Lake Washington, and Puget Sound without treatment. Wastewater (sewage) is collected and treated at the King County South Treatment Plant in Renton, then discharged to the Green River.
Many water quality response calls occur from people discharging materials into the storm drain. These discharges frequently include:
- Paint brushes being rinsed and paint poured into storm drains. We have tracked some spills miles from their point of origin.
- Pollutants from floor cleaning being dumped into storm drains, causing death to fish in our lakes and streams.
- Vehicle oil changes
- Pressure washing
- Construction materials such as concrete being discharged to storm drains
Please call 425-587-3900 24 hours a day to report spills of any type.