Wastewater Utility

The Wastewater Utility is comprised of three systems.

1. The Wastewater Collection System collects the all the sanitary wastewater from residential, commercial, and industrial drains and transports it to the Wastewater Treatment Plant. 
2. The Wastewater Treatment Plant is where the sanitary wastewater is processed before being discharged into the Willamette River. 
3. The Stormwater Collection System collects rainwater through catch basins in the streets and the many urban creeks in Corvallis and transports it directly to the Willamette River, without being processed at the Wastewater Treatment Plant.

Wastewater Quality Monitoring 

The City conducts over 10,000 tests on water samples every year to ensure a high quality product and compliance with all State and Federal regulations. Most tests are performed on-site at the Water Quality Lab; others are contracted out to certified testing laboratories. Corvallis wastewater consistently meets or exceeds all regulations for effluent quality. In fact, the quality of the treated water that the City returns to the Willamette River is oftentimes cleaner than the river itself!