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Sewage Treatment Capacity Charge

Growth paying for growth

King County
Wastewater Treatment Division
Capacity Charge Program
201 S. Jackson,
M.S. KSC-NR-0502
Seattle, WA 98104

Phone: 206-296-1450
Fax: 206-263-6073
E-mail: CapChargeEscrow

The capacity charge helps King County cover the cost of sewer improvement and expansion projects needed to serve new growth.

Sample invoice

Dear Capacity Charge Customer:
We’ve changed the look of your invoice! Billing and account information is now in an easy-to-read table.

You can still pay online with a check, Visa or Mastercard. For online payments, you need your account number and site number.

The sample invoice below shows the location of the site number at the bottom of the invoice. The account number is near the top, under your mailing address.

Sample invoice