The Salmon Creek Wastewater Treatment Plant serves about 36,000 households and an estimated 77,500 Clark County residents living inside the Clark Regional Wastewater District and the city of Battle Ground.
Public Works operates and maintains the plant, along with its pump stations and regional interceptor sewer lines. The department’s goal is to operate the system in a safe, dependable and cost-effective manner that meets all environmental regulations.
The Washington State Department of Ecology last year recognized the plant for 100 percent compliance with laws and regulations to protect the environment. The award marks the seventh year in a row the Salmon Creek plant has been recognized for perfect compliance. It also is the 14th time the plant has received the award since the program began in 1995.
The plant's capacity is 14.95 million gallons a day, considerably more than its average daily flow of 7.06 million gallons in 2013.
In June 2014, the Board of County Commissioners agreed to transfer the plant to the Discovery Clean Water Alliance, a regional sewer partnership involving Clark County, Clark Regional Wastewater District and the cities of Battle Ground and Ridgefield.
The transfer took place at the start of 2015, although Clark County will continue to operate the plant for at least another five years, through 2019.