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Residential sewer rates are based on average winter water consumption (AWWC) which is calculated annually on each residence.

Sewer Rates 2018 Rate
2 Month Billing
2019 Rate
2 Month Billing
Basic Charge - King County Wastewater Treatment $88.44 $90.66
Kirkland Wastewater (6 Units Included) $29.26 $31.08
Total Minimum Charge $117.70 $121.74
Sewer consumption charge per unit of average
winter water consumed
$4.88 $5.18

 A 10.5 percent City of Kirkland Utility Tax is added to all sewer service fees and is listed separately on your bi-monthly utility bill. KMC 5.08.050

Finance and Administration
Street Address: 123 5th Avenue, Kirkland WA 98033
Mailing Address: Utility Billing
P.O. Box 3865, Seattle, Washington 98124-3865

General Inquiries
T. 425.587.3001 | F. 425.587.3019