Our Rates

Clean Water Services goes through a budget process from January to June each year. This process helps guide what investments the community will make in water resources management and establishes sewer and stormwater rates for the following fiscal year.

Your health and safety are our priority. Rates support our work in protecting water resources as we look beyond this pandemic and keep up with changing needs. This requires additional investments in aging infrastructure, ensuring our long-term water supply and meeting stricter federal and state pollution control rules.

Under the current proposal, for the average household the regional sanitary sewer rate would increase by $2.07 (4.5%) a month, and the regional surface water management fee would increase by $0.50 (5.4%) per month, beginning July 1, 2021.

The proposed 2021-22 budget will be made available for review and public comment in late April. This page will be updated with more information on the budget review and comment process as it becomes available, including virtual participation options for the following meetings:

  • Friday, May 7, at 9 am, the CWS Budget Committee, comprised of five citizens and the five members of Clean Water Services' Board of Directors, will review the proposed budget, consider approval and make their recommendations to the Board.
  • Tuesday, June 15, at 10 am, the CWS Board, which is also the Washington County Board of Commissioners, will conduct a public hearing to consider and adopt the budget.

Due to the financial stress many families and businesses are feeling from the COVID-19 pandemic, Clean Water Services held sanitary sewer and surface water management rates at their current levels through June 30, 2021. This was the first time in nearly 20 years that rates have not increased.

Reference Documents

Beginning in July, your bill will reflect the annual adjustment (update) of your sanitary sewer usage average. Sewer usage is based on the average water you used during the previous winter months (November-April). As a result, your sewer usage will be less if you used less water last winter and higher if you used more.

Sewer & Surface Water Management Charges


Your bill for sewer and/or Surface Water Management from Clean Water Services is for a two-month period. 

The sewer charge has two parts. The base rate is $60.06 per dwelling unit, which is approximately two-thirds of the charge. Single family residences are generally considered one dwelling unit. The usage charge is based on average winter water consumption November through April, which is reviewed and updated each July. Winter water consumption is a good indicator of the wastewater your household produces and discharges into the sewer system for treatment. The usage rate per ccf is $1.99*. New customers will be billed $31.84, based on our average of 16 ccf* and these rates.

The Surface Water Management fee is $18.50 per service unit. Single family residences are generally counted as one service unit, and commercial properties are billed based on a measurement of impervious surface area.

*CCF is an abbreviation for "100 cubic feet." CCF is used as a measurement of water usage and to calculate your bill. There are 748 gallons in one CCF.

Sample Average Two-Month Bill for a Single Family Home
Charges Current Rate
Sewer Base Charge $60.06
Sewer Usage Charge $1.99/ccf
Surface Water Charge $18.50
Combined Average Charge $110.40


Have more questions?

Sewer and surface water charges can be complicated, so don't hesitate to call Customer Service at 503.681.4400 Monday through Friday, 8 am to 5 pm

You can pay your bill online, over the phone, by pay station or mail.

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