Repair kit or new assembly
Many failures come from worn checks, seals, or springs that can be rebuilt. An assembly that is old, damaged, or no longer approved is usually replaced.
Annual tests, repairs, and results filed with the city
Backflow Testing and Repair in Mesa and Phoenix
Test backflow prevention assemblies for businesses, HOAs, homes with landscape meters, and properties with fire lines, file the results the way your water provider requires, and repair or replace assemblies that fail.
Watch for these signs
When to schedule a backflow test
- Your water provider sent a test due notice
- A new backflow assembly was installed or moved
- An assembly was repaired and has to be retested
- An HOA or property has several assemblies due at different times
- An assembly is leaking, discharging, or was damaged
Our services
Backflow services we handle
- Annual testing of backflow prevention assemblies
- Filing the test results the way your water provider requires
- Repair and rebuild of assemblies that fail
- Assembly replacement and new installations
- Tracking due dates for properties with several assemblies
- Retesting after a repair
Your options
When an assembly fails its test
We look at the cause, the condition of the existing system, and what will work best for your property.
Keeping water on
Repairs on a building's main supply can shut off water to tenants. The work is planned around the property's hours where the job allows.
The deadline
Your water provider sets when results are due. A failed test starts that clock for the repair and the retest too.
Planning the work
What affects the price
- Number and size of assemblies
- Assembly type
- Access to each assembly
- Repairs or parts after a failed test
- Retesting after repairs
Backflow testing rules in Mesa, Phoenix, and Scottsdale
Each water provider runs its own program. These are the main points, from each city's own documents.
- Mesa: commercial and industrial customers and homes with dedicated landscape meters are covered. Assemblies are tested at least once a year before the compliance due date by a tester the city recognizes, and the report is due within seven calendar days of the test or by the due date, whichever is sooner. A repaired assembly has to be retested no later than 24 hours after the repair.
- Phoenix: assemblies are tested when installed, repaired, or relocated and at least once a year after that, by a tester on the city's certified list, with the report due by the date on the work order. Customers keep test records for at least 3 years. Single-family homes used only as residences are outside the program unless a cross-connection problem is identified.
- Scottsdale: commercial water customers have their assemblies inspected every year by certified testers, and the city notifies customers by mail.
What happens next
How testing works
- 1
Send the due notice or a list of assemblies, with locations and access.
- 2
Each assembly is tested with calibrated test equipment.
- 3
Results are filed the way your water provider requires, and you get a copy.
- 4
Failed assemblies are repaired or replaced, then retested.
Common questions
Before you schedule
How often does a backflow assembly need to be tested?
At least once a year in Mesa, Phoenix, and Scottsdale. Phoenix also requires a test when an assembly is installed, repaired, or relocated, and Mesa requires a retest no later than 24 hours after a repair. Your provider's notice gives the due date.
Does my house need a backflow test?
In Mesa, homes with a dedicated landscape meter need an assembly that is tested every year. In Phoenix, single-family homes used only as residences are outside the program unless the city identifies a cross-connection problem. If you received a notice, it applies to you.
Do you send the results to the city?
Yes. We file the results the way your water provider asks and give you a copy for your records.
What happens if my backflow assembly fails?
It is repaired or replaced and then retested. We explain the options and the price before the repair.
Can you test every assembly on our property at once?
Yes. For HOAs and properties with several assemblies, testing can be grouped into one visit and the next due dates tracked together.
Related services
Related services and guides
Get help
Request backflow testing
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