Water Reclamation & Reuse Facility

Waste Water Treatment Plant

Brief History

The first Moscow Wastewater Treatment Plant was constructed in 1918, consisting of two large septic tanks with contact beds for secondary treatment. In 1938 a new sewage plant was constructed which included updating the contact beds to trickling filters, installation of primary and secondary clarifiers, and sludge digesters. The treatment plant was again upgraded in 1957 with two new primary and secondary clarifiers.

In 1961, the plant was again upgraded with an effluent irrigation system for the lawn, pre-chlorination, new digester gas control equipment, automatic chlorine feed, and liquid digested sludge disposal facilities. In 1973, a chlorine contact tank and an aeration system were constructed.

The existing Plant was completely replaced in 2002 with a Biological Nutrient Removal (BNR) process and effluent filters were added in 2010 to remove phosphorus.

​Contact Us

Engineering Division
Kevin Lilly - Deputy Director - Engineering/City Engineer
Paul Mann Building
221 E. Second Street
Moscow, Idaho 83843


Streets, Fleet,
Water & Water Reclamation Divisions

Tyler Palmer - Deputy Director - Operations
201 N. Main Street
Moscow, ID 83843

​​Water Reclamation & Reuse Facility
Todd J. Swanstrom - Wastewater Manager
2221 Pullman Road
Moscow, Idaho 83843