South Treatment Plant
South plant, located in Renton, is part of King County's regional wastewater treatment system.
South plant treats wastewater from homes and businesses coming from cities located east and south of Lake Washington. Approximately 90 million gallons a day (mgd) of wastewater is treated at this facility during the dry months and up to about 300 mgd flows can be treated during the rain/storm season.
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Contact us
24 hour emergency and odor reporting: 206-263-1760
Administration: 206-263-1810
Address
1200 Monster Road S.W.
Renton, WA 98057
Directions , map, and septage disposal map