Dhamer's skills and customer focus are amazing! A simple rodding out of our plugged 2nd floor bathtub drain by one of their plumbers unfortunately resulted in a small leak in a corroded pipe fitting…

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D.D.

D.D.09/11/2025

I had the best experience using Jim Dhamer Plumbing for a water heater installation. I have used them several times previously for smaller jobs and they were always very responsive and professional…

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H.R.

H.R.07/29/2025

The experience was wonderful. We had a sump pump give out and even though we were scheduled for a later day Adam came out 2 days early and fixed it all in less than an hour. He and his apprentice…

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S.C.

S.C.12/04/2023

We called at 7:50am and they were at the house within 30 min (we do live < 1mile away). Phone and onsite plumber were very professional, courteous, and explained everything to us. We were lucky it…

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Backflow Testing in Lisle, Illinois

Jim Dhamer Plumbing and Sewer Inc. provides professional backflow prevention testing services in Lisle, Illinois. Annual backflow testing is required by most water utilities to protect public water supplies from contamination through cross-connection control compliance. Their services include emergency service, serving both residential and commercial properties throughout the Lisle area.

Whether you need a routine RPZ valve inspection, backflow prevention device testing, or a certified tester to file compliance reports with your local water authority,Jim Dhamer Plumbing and Sewer Inc. can help. Homeowners, HOAs, and property managers can request a free quote using the form on this page.