Hallsdale-Powell Utility District: backflow testing rules

Who must test

• HPUD tests reduced pressure (RP) devices annually and double check devices twice a year. Source.

How the report is filed

• Customers who use another testing service must send passing results to HPUD to avoid water service termination. Source.

Tester registration

• Only a certified tester registered with TDEC may inspect or test backflow prevention assemblies. Source.

Fees

• HPUD will test the device annually and after repairs for a $45 fee, per the program page. The 2023 fee schedule lists $50 per RP device every 12 months, $50 per double check every 6 months and $40 for return trips. Source.
• The 2023 fee schedule charges $50 for an RP device every 12 months, $50 for a double check device every 6 months and $40 for return trips. Source.

Approved testers

• HPUD will provide a list of certified testers. Source.

If a test is missed

• A failed device must be repaired within 30 days of the failure letter; HPUD retests, and if it fails again the customer has 15 days to repair it or water service is terminated. Source.

Program

• HPUD's water safety page has a Backflow and Cross-Connection Control section; a backflow preventer may be required where a cross-connection could exist. Source.

Read October 6, 2026. Program page: hpud.org.

Certified backflow testers near Knoxville

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