The Wastewater Division of Public Works is responsible for wastewater collections, sanitary sewer pump stations, wastewater treatment and discharge to the Columbia River. The wastewater division’s typical duties include:

  • Manhole inspections Washougal Wastewater Plant treatment pool
  • Preventative maintenance programs 
  • Pump station checks 
  • Wastewater plant maintenance 
  • Wastewater treatment 


Both the water and wastewater division perform daily tests and take daily samples to help ensure good quality drinking water is delivered to our customers and that clean safe water is discharged to the Columbia River. Thank you for taking time to check out our page and please contact us if you have any questions.

Sewer Plan