King County
Wastewater Treatment
Division
201 S. Jackson, M.S. KSC-NR-0502
Seattle, WA 98104
Phone: 206-296-1450
Fax: 206-263-6073

E-mail:
CapChargeEscrow @kingcounty.gov

Please note: the payment system is down for scheduled maintenance every Saturday from 10 p.m. until as late as Sunday morning at 9 a.m.

On occasion, the system requires maintenance outside this weekly time period.


Capacity Charge Online Payment   -   Help
Information Use the image below to help you locate the Account Number and the Site Number on the paper invoice you received in the mail.  Enter your numbers into the appropriate boxes, and then click on the Continue button below. 
Account Number    
Site Number    
 
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Sample Invoice   -   Help
Image of sample invoice with Account Number and Site Number circled in red at bottom right