Plumbing, Drain & Sewer Service

Backflow Testing

Discuss backflow prevention-device service and testing requirements. Testing is subject to current tester approval and local water-authority requirements.

Backflow assembly with blue valve handles, a pressure gauge and connected test hoses

What to expect

Understand the device and the service you need.

A backflow prevention device is intended to prevent water from flowing backward from a connected system into the drinking-water supply. The device type and the system it serves matter when deciding what attention is needed.

A property owner may call after noticing leakage around a device, visible damage, a change in water-system operation or a notice from the water utility. Share the notice when you call so the requested service can be distinguished from a plumbing assessment.

A better starting point

Start with the accessible device and connections.

An assessment considers the device identification, accessible connections, visible leakage and the symptoms you describe. Appearance alone does not establish that a device is functioning correctly. We discuss the service scope before work begins; any repair or replacement recommendation depends on the device and the problem identified.

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Practical service planning

Have the property information ready.

Provide the property address, device location, make or model if visible, and any previous service information. A photograph taken from a safely accessible location can help explain the setup. Mention locked enclosures, shared water supplies and access restrictions.

If your request concerns a required test, approved tester, filing or deadline, contact your water utility or the authority named on the notice to confirm its requirements. Confirm the required service with us before scheduling. A plumbing assessment does not replace an official test or required submission.

Related plumbing services

Find help for the affected system.

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Frequently asked questions

What is a backflow prevention device intended to do?

It is intended to prevent reverse flow from a connected system into the drinking-water supply. The appropriate device and service depend on the system it protects.

Does a leak prove the device has failed?

No. Leakage is a reason for assessment, but it does not identify the cause or confirm the device’s protective function. Tell us where and when the leak occurs.

What should I provide when I call?

Have the property address, device location, symptoms and any utility notice available. Share the device identification and previous service history if you have them.

Who can explain required testing or filing?

Your water utility or the authority named on your notice can explain approved-tester, testing and submission requirements. Confirm that your requested service can be provided before booking.

Talk with a specialist

Ready to address the issue?

Call (310) 743-3915Request Service