Our Rates

Find a summary of the Fiscal Year 2019-20 sanitary sewer and Surface Water Management charges below.

Sewer & Surface Water Management Charges beginning July 1, 2019 

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


Budget and Rate Information

You may also download the full Rates and Charges document (PDF, 1MB) with details on the 2019-20 budget. It identifies:

  • When and how Clean Water Services charges are applied
  • Sanitary sewer and Surface Water Management service charges and connection charges
  • Industrial metering and strength charges
  • Review and inspection fees
  • Other miscellaneous administrative fees

Each year, Clean Water Services goes through a budget process from January through June to establish rates for the following fiscal year. Public meeting notices are published in local newspapers, inviting the public to comment on proposed rates before the budget is adopted. Citizens are welcome to attend the District's Budget Committee meeting in May or to testify before the District's Board of Directors, which ultimately adopts the budget, in June. Before any rate change, the District sends media releases to local newspapers and billing inserts to customers to notify customers of rate increases.

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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