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Annual testing

Hillsborough County Water Resources Backflow and Cross Connection Service Testing annual backflow testing

Hillsborough County requires annual testing for every property owner who has a backflow assembly and only accepts county-registered certified testers.

Utility: Hillsborough County Water Resources Backflow and Cross Connection Service Testing Last verified: 2026-04-05 Due basis: Hillsborough County says all property owners with a backflow assembly must have it tested annually. Only a registered Hillsborough County certified tester can perform the test, failed assemblies must be reported within 48 hours, and installations, replacements, or relocations require a permit plus field inspection.
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Direct answer

What matters here

Hillsborough County requires annual testing for every property owner who has a backflow assembly and only accepts county-registered certified testers.

Due basis: Hillsborough County says all property owners with a backflow assembly must have it tested annually. Only a registered Hillsborough County certified tester can perform the test, failed assemblies must be reported within 48 hours, and installations, replacements, or relocations require a permit plus field inspection.

Highlights

Highlights

  • Annual testing is explicit on the official page.
  • Only a registered Hillsborough County certified tester can perform the test.
  • The county has a dedicated tester page and portal-linked workflow.
Workflow

Workflow

  1. Confirm the property's assembly is due under the county's annual cycle.
  2. Choose a tester from Hillsborough County's registered tester list.
  3. Complete the test and keep the result inside the county reporting workflow.
Residential

Residential

  • Hillsborough County explicitly says all property owners with a backflow assembly must have it tested annually, so the public page is not commercial-only.
  • Residential users still need county-registered testers and can encounter permit and inspection steps when assemblies are installed or replaced.
Commercial focus

Commercial and managed properties

  • Commercial intent is strong because the page combines annual testing with permit closure, tester enrollment, and failed-test reporting.
  • The county's BMP platform gives this utility a more operational workflow than a basic FAQ page.
FAQ

Local questions people actually ask

Does Hillsborough County Water Resources Backflow and Cross Connection Service Testing require annual backflow testing?

Annual. Hillsborough County says all property owners with a backflow assembly must have it tested annually. Only a registered Hillsborough County certified tester can perform the test, failed assemblies must be reported within 48 hours, and installations, replacements, or relocations require a permit plus field inspection.

Who is affected by Hillsborough County Water Resources Backflow and Cross Connection Service Testing backflow rules?

Property owners with a backflow assembly at a Hillsborough County Public Utilities service connection, including homes, businesses, and permitted installation or replacement projects.

How do I submit or confirm a backflow test for Hillsborough County Water Resources Backflow and Cross Connection Service Testing?

Use the official utility workflow and submission methods listed on this page: Hillsborough County backflow program, Hillsborough County certified tester page. Program phone: 813-307-1000.

Where should I look for testers for Hillsborough County Water Resources Backflow and Cross Connection Service Testing?

Start with the governing authority's published tester list. This utility has an official approved-tester route and it should be treated as the primary source.