For questions about the Water and Land Resources' website, please contact Fred Bentler, webmaster.
Discounts are aimed at decreasing runoff and promoting the reduction of impervious surface – the main contributor to surface water runoff and its effects: poor water quality, erosion, flooding, and sedimentation – to comply with the federal Clean Water Act. To find out what discounts are available, visit the SWM Fee discounts page.
Impervious surface reduction cost-sharing program
King County will share the costs of converting impervious surface to native-vegetated landscape, compost-amended lawn, or grassed modular-grid pavement. Reduction in impervious surface could potentially place you into a lower rate category, reducing your fee assessment. To find out more, refer to our SWM fee cost-sharing program.
Administrative appeals process
If you believe the impervious surface measurement on your property is incorrect, the calculation of your SWM fee is incorrect, or that a discount has not properly been applied to your surface water management fee, please speak to one of our customer service representatives at 206-296-6519 so that we can review your assessment promptly. In some cases, you may already qualify for a discount; in others, fee reductions may not be granted until the next year.
Visit the Common Questions and Answers page for answers to other surface water management-related questions. For more detailed technical information about surface water management fee measurement, discount requirements, how to apply for a cost-sharing grant, or about pervious surface credits, refer to SWM Fee Protocols document.
To ensure King County’s measurements of your impervious surface are accurate, re-measurement is always available. Contact a customer service representative at 206-296-6519.
Why the SWM fees have increased
For more information about SWM fee rates and discounts, please call King County Water and Land Resources Division at 206-296-6519.