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Wastewater Treatment

The City of Corvallis operates one wastewater treatment plant, maintains over 200 miles of wastewater collection pipes, and treats over 4 billion gallons of wastewater a year. The sanitary sewer system is a gravity system, which uses eight pump stations to move the wastewater from lower elevation portions of the system to the treatment plant located at NE 2nd Street. The treated wastewater goes through a rigorous series of tests to assure water quality is not compromised as it is discharged back to the Willamette River.

Wastewater Utility

The Wastewater Utility is comprised of three systems:

Bulk Water

City of Corvallis Bulk Water Station

Public Works provides a bulk water dispensing station for the convenience of contractors, street sweeping companies and people trucking water for domestic use.

The bulk water station is located on Plumley Place near the Corvallis Airport. It is accessible seven days a week, 24 hours a day.

How to purchase and access the water:

Regulatory Requirements

he federal Safe Drinking Water Act of 1974 and the 1986 and 1996 amendments were developed to insure the quality and safety of the nation’s drinking water. The federal government, through the U.S. Environmental Protection Agency (EPA), has the authority to regulate public water systems to protect public health. The EPA sets national drinking water standards and establishes drinking water testing methods. 

Water Quality

Corvallis drinking water continues to meet all federal and state drinking water standards. Providing our customers with a safe and reliable drinking water supply is a primary mission of the Corvallis Public Works Department. Our commitment to water quality excellence has in many cases carried us beyond state and federal requirements.

Water Distribution FAQs

Backflow Prevention

The City of Corvallis supplies drinking water to the community that meets all EPA and Oregon Health Division requirements for public health and safety. Even though the water that reaches your home or business is safe, it can be contaminated within your own piping system and could degrade water quality in the rest of the City water system, should that water backflow into the City water mains. Most modern water-using fixtures and appliances (sinks, toilets, and clothes washers) have built-in backflow prevention features, but there are some that don't.

System Maintenance

Your meter is located in the sidewalk in front of your residence. The City is responsible for the maintenance of the water line from the street to the meter. The property owner is responsible for maintaining the lines from the meter to the house. In the event you experience frozen pipes or broken water lines in your house or on your property, you can turn off your water at the meter — look for a small wheel or handle in the water meter box.

Water Distribution

To make sure there is enough water available for our customers and for fire protection, eight reservoirs with a total capacity of 21 million gallons are located throughout the city. Booster stations pump water up from the Taylor Plant to the reservoirs, which are located on hills around town. Once the water is in the reservoirs, it can then flow by gravity to homes and businesses in town as it is needed. 

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