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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.

Surface Water Management Fee Structure for 2018:

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

Surface Water Management Fee = $17.55/month (flat rate) + 7.5% utility tax = $226.40/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.).

$17.55/month per “Equivalent Service Unit” (ESU). One ESU is equal to 2600 square feet (ft2) of impervious surface.

Surface Water Management Fee = # ESU x $17.55/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.

For questions about your stormwater utility fee, please contact the Public Works Department at (425) 587-3800 or

Public Works
Mon-Fri, 8 a.m. to 5 p.m.
123 5th Avenue, Kirkland WA 98033
Operations & Maintenance
Mon-Fri, 6:30 a.m.-3:30 p.m.
915 8th St, Kirkland WA 98033

General Inquiries

Engineering: T. 425.587.3800 | F. 425.587.3807
Operations & Maintenance: T. 425.587.3900 | F. 425.587.3902