South Treatment Plant

The plant

 
Master Mechanics keep the plant operating 24 hours a day

The South Treatment Plant sits on 94 acres in Renton, Washington, south of Seattle. Besides treatment operations, the plant site includes facilities for biosolids handling, water reuse and testing alternative treatment technologies. King County is committed to being a good neighbor with its wastewater treatment facilities and works to ensure safety and minimize impacts of all projects affecting the natural environment, facility neighbors and our employees.

At South Plant, we have devoted extensive effort to odor control, water reclamation, and native landscaping to minimize the impact of the plant on the surrounding community.

Waterworks Gardens opened next to the South Plant in 1996 as a system for incorporating stormwater treatment with public art. With trails, art, native plants, wildlife and ponds, this eight-acre public park naturally cleans all stormwater from South Plant.

During the plant's most recent expansion (completed in 2001), the county embraced the concept of Partnering, which has saved both dollars and time during construction of the new facilities.