Wastewater Treatment

The City of Sheridan has had a sewer system in place since the 1950's.

The Waste Water Treatment Plant processes about 500,000 gallons of waste water per day. The City uses a lagoon system to treat and store the waste water. Treated water is discharged into the South Yamhill River from November through May. The treated water is tested to ensure that it is clean and that the temperature is correct so the discharged water does not harm the river's ecosystem. The City is not permitted to discharge treated water into the River during the summer months. In summer the water is stored in the lagoons.The City and local farmers have a program where treated water will be used to irrigate non-food crops.  This lowers the amount of water that must be stored during the summer months. 

The City has about 20 miles of sanitary sewer lines and two pumping stations that move the waste water to the Plant. The City is responsible for the maintenance of the sewer main lines.

The City updated its Waste Water Facility Plan in 2003. A copy of the executive summary is attached at the end of the document list.

The Plan was updated in 2013 and a copy of that Plan is attached.

Sanitary and Storm Water Drains

The drains are designed for waste water and street drainage only. Do not use the drains to get rid of oil, grease, paint, etc. Improper use of the drains can cause serious damage to the system and to your property. You can dispose of hazardous waste by contacting Recology-Western Oregon at 503-472-3176.

Sewer Backups

Most sewer backups in a home or commercial facility are caused by clogged pipes within the building. Properly cleaning any sewer back up is important. Cleaning a sewer backup is similar to cleaning your house after a flood. Attached is a document about Cleaning Your Home After a Flood that provides some information about mold and mildew and about drying out your house.