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Stormwater Utility Rate

The Stormwater Utility is funded by revenue generated by the Surface Water Management fee charged to property owners. This fee appears on the property tax statements of developed parcels within the City of Kirkland. The fee funds activities to comply with the county’s National Pollutant Discharge Elimination System Phase II Municipal Stormwater Permitlinks to external site, including water quality monitoring and educating home and business owners about reducing pollution. Fees also fund maintenance and enhancements to the City’s stormwater system. The system is made up of 427 miles of pipe, 24,995 catch basins, and 1,102 detention tanks and vaults that help keep pollution out of our streams and protect water quality in our community.

Surface Water Management Fee Structure for 2019:

Single-Family Properties: Residential properties are charged a flat rate per year.

Surface Water Management Fee = $17.99/month (flat rate) + 7.5% utility tax = $232.07/year

This rate was set based on aerial photo surveys which show that the average amount of impervious surface on a single-family parcel in Kirkland is approximately 2600 square feet.

Commercial and Multi-Family Properties: Commercial properties are assessed a charge based on the actual amount of impervious surface area they contain (buildings, parking lots, etc.).

$17.99/month per “Equivalent Service Unit” (ESU). One ESU is equal to 2600 square feet (ft2) of impervious surface.

Surface Water Management Fee = # ESU x $17.99/month + 7.5% utility tax

Discounts on Fee

Discounts are available for qualified low-income senior citizens, and undeveloped properties are not charged a surface water fee. Please contact the Kirkland Public Works Department at (425) 587-3800 or for details.

Discounts are also available for new or remodeled commercial buildings that install a qualified rainwater harvesting system. Please see Policy L-3 for details on this credit.

Questions about your surface water management fee? Call 425-587-3800 or contact us via the Our Kirkland Customer Service Portal.

Public Works
123 5th Avenue, Kirkland WA 98033
T. 425-587-3800 | F. 425-587-3807
Mon-Fri, 8 a.m. to 5 p.m.

Operations & Maintenance
915 8th St, Kirkland WA 98033
T. 425-587-3900 24/7 | F. 425-587-3902
Mon-Fri, 6:30 a.m.-3:30 p.m.

General Inquiries - Contact us via the: 
Our Kirkland Customer Service Portal