BackflowNear Test-Due Reminder

Interstate Mechanical Corporation

Backflow testing. 1841 E Washington St, Phoenix, AZ 85034

1 utility approved list
★ 4.2 25 Google reviews
90/100 BackflowNear score

Approvals

✓ On the City of Phoenix list Phone matches its Google profile

Ask for the certificate number of the tester who will do your test, and check that your own water utility accepts reports from this company.

Where you will find Interstate Mechanical Corporation

These are the city pages close enough for this business to appear on.

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Questions about Interstate Mechanical Corporation

Is Interstate Mechanical Corporation approved to test backflow assemblies?

Interstate Mechanical Corporation is on the City of Phoenix list, as of August 11, 2026. That means the utility lets the company file backflow test reports in its system; it is not a state license. Ask for the tester's certificate number before the test.

What does Interstate Mechanical Corporation do?

Their listing covers backflow testing. Call to confirm the service you need, because offerings change.

What areas does Interstate Mechanical Corporation serve?

They are based in Phoenix, Arizona, within driving distance of Tempe, Phoenix, Glendale, Mesa, Gilbert. Service areas are set by the business, so confirm yours when you call.

How do I reach Interstate Mechanical Corporation?

Call (602) 257-1319. Their website is linked on this page.

Is this your business?

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