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 hassle-free experience to meet the requirements from your water purveyor and we are here to provide just that! 

There is nothing more upsetting than scheduling a backflow assembly test and no one shows up.  Or worse yet, paying for a backflow assembly test just to receive another notice saying they didn’t receive it!  JM Waterworks does not drop the ball.  We slam dunk it.

JM Waterworks services all backflow assemblies in the following water systems: Wenatchee, East Wenatchee, Chelan County PUD, Cashmere, Leavenworth, Entiat, Chelan, Manson, Orondo, Grant County, and Quincy. 


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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.