Metro Water Services (Nashville): backflow testing rules

Who must test

• MWS (not a private tester) performs the annual inspection and schedules geographically. Source.
• Examples listed: restaurants, medical facilities, automotive industries, multi-story buildings, multi-unit apartment complexes. Source.
• Homes with underground irrigation or fire protection systems, pools or alternative water sources must use backflow protection. Source.

Notices and deadlines

• Customers do not choose their own date; MWS schedules the annual inspection by area. Source.
• Corrective timeline ranges from immediate disconnection to ninety days depending on hazard level. Source.

How the report is filed

• Records are searchable at documents.nashville.gov. Source.

Fees

• Normal business hours; charged on the water bill; price subject to change (page undated). Source.
• Charged for each re-test visit after a failed inspection. Source.

Program

• Page covers annual inspections, fees, commercial and residential requirements, installation rules and a backflow reports search. Source.

How to file your backflow test with Metro Water Services

1. Read your notice. Customers do not choose their own date; MWS schedules the annual inspection by area.Source.
2. Book a tester Metro Water Services accepts. See finding a tester below; book early so there is time to repair a failed assembly.
3. The tester tests the assembly and fills in the test report. A failed assembly is repaired and tested again.
4. The report is filed. Records are searchable at documents.nashville.gov.Source.
5. Fees. Normal business hours; charged on the water bill; price subject to change (page undated). Source.
6. Keep a copy and set a reminder for next year. Set a free test-due reminder.

Finding a tester Metro Water Services accepts

We found no tester list on Metro Water Services's own pages. Use a state certified tester, and check your notice in case it names the testers or the portal it accepts.

Before you book, ask the tester:

• Are you registered with Metro Water Services?
• Will you send the test report to the utility for me, and how?
• 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 Tennessee

• Consolidated Utility District of Rutherford County
• First Utility District of Knox County
• Columbia Power and Water Systems
• Hallsdale-Powell Utility District
• West Knox Utility District
• Water Authority of Dickson County
• Hixson Utility District
• Harpeth Valley Utilities District

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

Backflow testers near Nashville

What the badges mean

✓ TN 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.

✓ TN 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.

All testers near Nashville · Tennessee roster