|
|
|
|
|
|
|
|
||||
What is a CSO?
Like many U.S. cities, portions of Seattle’s sewer system are designed to carry sewage and stormwater runoff in a single pipe. King County works with the City of Seattle to maintain and improve the combined sewer system in the city. Suburban sewers are typically two-pipe systems that carry stormwater and sewage independently of each other. Because Seattle’s combined system collects greater flows of rainwater and runoff during and after storms, there is an increased potential for these sewers to back up into Lake Washington, Puget Sound, the Duwamish Waterway and other regional waters. When these overflows happen, they are called CSOs, or combined sewer overflows. King County is among the national leaders in reducing CSOs and protecting water quality of our surrounding water bodies. The Henderson/ML King CSO project is part of a countywide effort to monitor and divert combined storm flows away from our communities and natural water bodies. Because of efforts like the new Henderson CSO project, our neighborhood beaches are cleaner and safer for all to enjoy.
|
|
| ||
|
Questions? Contact the project's construction hotline at 206-684-1251 (TTY 711) or e-mail us. Henderson/M.L. King CSO Project Updated: Oct. 24, 2005 |
Related Information:
|
|
|
King County |
Natural Resources & Parks |
Wastewater Treatment Division
Links to external sites do not constitute endorsements by King County. |
||
Signs like this at the Atlantic City Boat Ramp warn people not to swim during or after storms because of the potential of sewer overflows. Because of the Henderson CSO control project, overflows to Lake Washington from the Rainier Beach area will occur far less often. 
