Hoffman Plumbing, St. Louis, MO: Backflow Testing

Certification

✓ On Missouri's certified backflow tester roster Phone matches its Google profile

Certified tester	Certificate	Expires
Charles Cooper	34-14845	December 2030
Mark O. Waters	34-0090	December 2027

From the Missouri Department of Natural Resources roster, read October 6, 2026. The roster lists people, not companies; these are the certified testers it lists for this business. Ask which tester will do your test, and your utility may also require the tester to be registered with it.

Call (314) 772-3559 Visit website More testers in Missouri

Where you will find Hoffman Plumbing

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

Other backflow testers nearby

Business	Services	Distance
Ahern Fire Protection	Backflow Testing	2 mi
Corrigan Co.	Backflow Testing	2 mi
Godoy Services LLC	Backflow Testing	2 mi
Hoffmann Brothers	Backflow Testing	2 mi
L. Grasse & Assoc	Backflow Testing	3 mi
GMP Plumbing	Backflow Testing	3 mi

Questions about Hoffman Plumbing

Is Hoffman Plumbing licensed?

Yes. Missouri records showed an active certificate (#34-0090) when we last checked in Oct 2026. Ask to see it before work starts, since a certificate can lapse between checks.

What does Hoffman Plumbing do?

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

What areas does Hoffman Plumbing serve?

They are based in St. Louis, Missouri, within driving distance of St. Louis, Webster Groves, Olivette, Kirkwood, Fenton. Service areas are set by the business, so confirm yours when you call.

How do I reach Hoffman Plumbing?

Call (314) 772-3559. Their website is linked on this page.

Is this your business?

Claim this listing free: add the utilities you file with, your service area and your residential test price, and get annual test-due requests from property owners.

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