JM Waterworks is the clear clean water choice for providing backflow assembly testing in the Greater Wenatchee Valley and North Central Washington.

Julie McWiggins, Owner

Julie McWiggins, Owner

Customer service, doing what we say we are going to do, is the #1 priority of JM Waterworks.  You want a convenient, responsive, and hassle-free experience to meet the requirements from your water purveyor and we are here to provide just that. 

JM Waterworks services all backflow assemblies in the following water systems: Wenatchee, East Wenatchee, Cashmere, Dryden, Peshastin, Leavenworth, Entiat, Chelan, Manson, Rock Island, Crescent Bar, Quincy, Chelan County, Douglas County, and Grant County.

Pretty much all of North Central Washington…

We look forward to meeting you.


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Backflow Assembly

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Cross Connection
Control Surveys

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Small Water
System Operation

 Why JM Waterworks?

  • Communication and delivering exceptional customer service

  • Honest sincere commitment to safe drinking water

  • Locally owned and operated small business with hometown values since 2012

  • Licensed, bonded, and insured


Clean safe drinking water is an expectation and JM Waterworks dedication. 

We look forward to meeting you and your needs.