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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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Police, fire, and emergency medical response services are available as usual. Emergency? Call 9-1-1.

Certified Testers List

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The City maintains a list of businesses licensed in Tumwater to provide backflow assembly installation and testing services.  If you are in need of an assembly or service for an existing service, feel free to start your search here.

Backflow Installers and Testers with a City of Tumwater Business License - BATs pdf-icon-sm

If you are a contractor licensed to work in the City of Tumwater and would like to be added to this list, please contact the Operations Division at (360) 754-4150.