Missouri's Department of Natural Resources requires public water systems to control cross-connections, and utilities in Missouri track devices and collect test reports each year.

Missouri summers are hot and irrigation-heavy in the suburbs, and winters bring hard freezes that crack PVBs left charged. Hard water in parts of the state builds scale on check seats. Grizzly Backflow & Plumbing connects Missouri property owners with testers for PVB testing, backflow valve repair and backflow device rebuild kits. Call (833) 990-5874.

Certified backflow testers working in and around Missouri
RPZ, double check, PVB and fire line assemblies
Test reports filed with your water utility
A person on the phone at (833) 990-5874

(833) 990-5874

Why call us for backflow testing

Missouri Owners Call Us for Backflow Testing

Missouri PVBs crack when they are left charged into a hard freeze. Grizzly Backflow & Plumbing connects Missouri homeowners with testers who check for freeze damage and replace bonnets or whole devices when needed.

Hard water builds scale on check seats, so rebuild kits are a common fix. Every repair is retested and reported. Call (833) 990-5874 for PVB testing, repair and backflow testing in Missouri.

Call (833) 990-5874

Certified testers

Testers whose certification your water utility accepts for Missouri.

Report filing

Reports go in through the utility portal or on its own form.

Price first

You hear the price on the phone before the test is booked.

Readings, not guesses

Each check and relief valve gets an actual psid reading.

Repair on site

Rebuild kits for common brands, so many failed devices are fixed and retested in one visit.

Multi-device sites

Domestic, fire line and irrigation assemblies tested and tracked together.

Backflow testing FAQs

Questions about backflow testing

Common questions about backflow testing in Missouri.

Talk to a person

Who is allowed to test my backflow device?

A tester who holds a backflow tester certification recognized by your state or your water utility. Many utilities keep an approved tester list and reject reports signed by anyone not on it.

Can a backflow preventer freeze?

Yes. Trapped water expands and can crack the bronze body or blow out the bonnet. Insulated enclosures, heat cable or draining the device for winter prevent it.

Do I need an expansion tank after installing a backflow preventer?

Often, yes. The device makes your plumbing a closed system, so heated water cannot expand back to the main and the water heater relief valve may start dripping.

Who sends the test report to the water utility?

The tester usually files it, either on the utility's paper form or through its online portal. Ask for a copy for your own records.

Is fire sprinkler backflow testing different?

Yes. Along with the standard check valve test, NFPA 25 calls for an annual forward flow test on fire line backflow assemblies. Results often go to both the water utility and the fire authority.

Book a backflow test

Backflow Test Due in Missouri? Call now.

Certified testers for backflow testing in Missouri. Call (833) 990-5874 and we go through the device and the price before anything is booked.

(833) 990-5874

Phone · (833) 990-5874