Tumwater City Hall and all City facilities will be closed to the public until further notice. Visit our COVID-19 webpage for more information.

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Wellhead Protection Area

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Wellhead Protection 

A wellhead protection area is the surface and subsurface area surrounding a well or well field of a public water system. The area is divided into different zones based on the amount of time it takes ground water to reach the well. Our wellhead protection areas are divided into 6-month, 1-year, 5-year, and 10-year time of travel zones. 

New Wellhead Protection Area

The City’s first wellhead protection areas were drawn in 1997 and since that time the City has increased water production capacity at its existing wells, added new wells and removed others. Because of these changes it became necessary to redraw the boundaries and in the spring of 2016 the City completed a new Wellhead Protection Plan. This effort to redraw the boundaries utilized new technology that allowed us to more accurately depict groundwater flow. 

In the summer of 2018 the City adopted these new wellhead protection areas, which has expanded the area regulated by the wellhead protection ordinance.  Certain land use restrictions meant to protect groundwater no longer apply to some parcels, while these same restrictions have been shifted to others.  Some existing land uses that fall within the new regulated area may need to cease or change in order to comply with the ordinance. For more information, see this list of frequently asked questions PDF file.

Enter your address in the web map below to see where your property is in relation to the City’s drinking water wells and current ground water capture zones. See instructionsPDF file on how to use this map.

For assistance

For more information, please call Tumwater Water Resources at (360) 754-4140.