Thurston County Storm and Surface Water Utility Rates
All property owners in unincorporated Thurston County pay Storm and Surface Water Utility rates through their property taxes. The rates vary depending on the property's square feet of impervious surface, and also on whether the property is located within the regulatory boundaries of "NPDES Phase II." (This refers to National Pollutant Discharge Elimination System Phase II, a federal regulation that requires Thurston County and other jurisdictions of a certain size to adopt stormwater-management programs to reduce the amount of pollution that enters water bodies.)
Click here for a PDF of the NPDES boundaries.
How Utility Rates are Calculated
The Thurston County Storm and Surface Water utility rate has two components: a base rate and a capital rate. The rates appear as a single stormwater charge on annual property tax statements.
Click here to see how your current stormwater rates are calculated for your particular parcel.
Click here to learn about the base rate.
Click here to learn about the capital rate.
Click here to learn about the rate credit program for schools and businesses.
Staff contact: Marc Vachon: (360) 786-5526. E-mail: firstname.lastname@example.org.
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