Residential Backflow Upgrade Program


The Residential Backflow Upgrade Program will install, test, or replace existing backflow preventers at residential water service connections in unincorporated Hillsborough County. 

Hillsborough County Public Utilities will replace customer-owned backflow devices with County-owned devices. This means that homeowners will no longer own, service, or be required to provide their backflow device. The County will own, maintain and provide service on the device.

This program will create a closed plumbing system on your side of the backflow device, which will prevent contaminated water from getting into the municipal water supply.

What to Expect

  • Construction will generally take place on weekdays between 8 a.m. and 5 p.m.
  • Crews will be working in the right-of-way and maintaining access to homes will be a priority.
  • Residents should expect some temporary road or lane closures. All detours and closures will be clearly marked and flagmen will help direct traffic, if necessary.
  • Contractors will be working in the immediate vicinity of your water meter. They will notify you when the water will be off for the next hour or so. When the work is complete, they will notify you with a door hanger, which explains how to flush your lines to clear any trapped air.
  • The job should take a little over an hour. An inspection port may remain, until the inspection is complete.
  • Your water is expected to be off a little over an hour.
  • If you are not home when the contractor comes through, we will replace the backflow preventer, and leave a door hanger explaining how to flush your lines to clear any trapped air.
  • Any disturbed landscaping will be restored to its original, or better, condition. To protect you, we will take both before, and after pictures of the installation to help address any concerns that may arise.
  • When water service is interrupted to make repairs, you will need to flush the cold water side of your faucets beginning at the bath tub working your way through the house, flushing until clear. 

Cost & Funding

The Residential Backflow Upgrade Program was approved by the Hillsborough County Board of County Commissioners as part of its Capital Improvement Program. The total project cost is $1M and is being funded in FY17 and FY18 by Hillsborough County Public Utilities.


  • Construction expected to start - Summer 2017
  • Construction expected to complete - 10 years from start
  • Neighborhood order:
    • Valencia Lakes
    • Sun City Center
    • The Falls Southshore
    • Magnolia Park
    • Durant Trails at Durant E. of John Moore off Bloomingdale
    • Brookwood Brook Crossings Drive
    • Treetops Westchase
    • Harbor Isle off US HWY 41
    • Hickory Woods John Moore S. of Bloomingdale
    • Keystone Shores Estates
    • Stillwater
    • Hillside Guiles Road East of Bell Shoals
    • Fishhawk Trails
    • Vineyard Vintage Way off S. Kings Way and Bay Ride
  • Please note this schedule is subject to change at any time.


  • Project Manager – Cecil Herline, Project Manager, Hillsborough County Public Utilities: (813) 964-2715
  • Hillsborough County Customer Service: (813) 272-5275
  • Hillsborough County Public Utilities Water Quality Line (813) 264-3836, select 1 for South County area and select 2 for North County area
  • After Hours Emergencies - Hillsborough County Public Utilities: (813) 744-5600

Additional Information