City of Mesa Water Resources Backflow Testing: Rules and...

Who must test

Commercial and industrial customers and homes with dedicated landscape meters must install, test and maintain backflow prevention assemblies under Mesa ordinance and state rule R18-4-215. Source.
The customer must have every backflow prevention assembly tested and serviced at least once a year before the compliance due date, at the customer's expense (Mesa City Code 8-1-11). Source.

Notices and deadlines

Mesa Water Resources sends notices to regulated customers when an annual test is due; the customer then hires a recognized Backflow Assembly Tester. Source.

How the report is filed

Recognized testers (General Tester and Fire Contractor lists) must submit test reports to Mesa's backflow portal (SAMS on crossconnection.njbsoft.com, linked as mesaaz.gov/backflowportal) within seven days of service. Mailed, emailed and faxed reports are no longer accepted. Source.
Mesa accepts reports only from recognized testers through the portal; incomplete reports are rejected and a corrected report is due within three calendar days. Source.

Tester registration

Recognition requires a Tester Application, a signed City of Mesa Backflow Assembly Tester Agreement, proof of tester certification, and a current gauge accuracy or calibration report (Mesa City Code 8-1-12). Source.
Recognized testers calibrate all test equipment annually through an accepted agency and submit the accuracy report; a report more than one year old is expired and the tester is removed from the list. Source.
Recognized testers must notify the program of changes to contact details, certificate, gauges and calibration, contractor's licence or proof of insurance. Fire sprinkler testing requires an Arizona ROC C-16 or CR-16 licence. Source.

Fees

Failure to submit testing records on time results in a Backflow Compliance Late Fee (amount in the Utility Service Fees schedule) and possible civil sanction. Source.

Approved testers

The program page links two recognized tester lists. not downloaded. Source.

If a test is missed

A tester who fails to submit a report within ten business days gets a warning, then a 6 month suspension, a 1 year suspension, and permanent revocation; if the delay causes a customer late fee, suspension starts at the first offence. Source.
A finding of violation brings civil sanctions of not less than $100 or more than $1,000 for each violation, and each day a violation continues is a separate offence. Source.
Mesa may terminate water service when backflow protection is missing, bypassed, not working, not tested annually, or test records were not provided on time. Source.

How to file your backflow test with City of Mesa Water Resources

Read your notice. Mesa Water Resources sends notices to regulated customers when an annual test is due; the customer then hires a recognized Backflow Assembly Tester.Source.
Book a tester City of Mesa Water Resources accepts. See finding a tester below; book early so there is time to repair a failed assembly.
The tester tests the assembly and fills in the test report. A failed assembly is repaired and tested again.
The report is filed. Recognized testers (General Tester and Fire Contractor lists) must submit test reports to Mesa's backflow portal (SAMS on crossconnection.njbsoft.com, linked as mesaaz.gov/backflowportal) within seven days of service. Mailed, emailed and faxed reports are no longer accepted.Source.
Fees. Failure to submit testing records on time results in a Backflow Compliance Late Fee (amount in the Utility Service Fees schedule) and possible civil sanction. Source.
Keep a copy and set a reminder for next year. Set a free test-due reminder.

Finding a tester City of Mesa Water Resources accepts

City of Mesa Water Resources posts a list of testers it accepts on mesaaz.gov. Open the list. The testers on this site hold a state certificate; check the list or ask the tester whether City of Mesa Water Resources accepts them.

Before you book, ask the tester:

Are you registered with City of Mesa Water Resources?
Will you file the report in SAMS (NJBSoft) for me, and pay or pass on any filing fee?
When is my report due? The date is on your notice; the tester needs time to test, repair if needed and file.

Other water utilities in Arizona

Read October 6, 2026. Program page: mesaaz.gov.

Backflow testers near Mesa

What the badges mean

✓ AZ Certified Backflow Tester Verified: A state roster lists at least one certified tester at this business, with a current certificate. The state sets the exam and renewal.
✓ AZ Utility-Approved Tester Verified On the city list: The company is on a water utility's own approved list (the second badge names the list). That is the utility's approval, not a state license, and it counts for that utility.
3 certified testers: How many certified testers the roster lists at this business.
★ 4.8 (25 reviews): The Google rating, shown as Google reports it. It does not change the order.

Order is by our quality score, never by payment. How we verify listings.