Backflow Testing in Carrboro, NC

The local picture in Carrboro

Carrboro shares one water and sewer authority with its larger neighbor: OWASA treats the town's water at its Jones Ferry Road plant, on the Carrboro side of the line. OWASA's cross-connection rule is simple. If a property irrigates or has a pool, it needs a backflow prevention device, and the owner has to get that device tested each year by someone OWASA has certified. Questions about a specific account go to OWASA's backflow line, 919-537-4251.

Carrboro's housing runs from Shelton Street mill houses downtown to 1980s and 1990s subdivisions, with a median build year of 1988. Older lots rarely had sprinklers from the start, so assemblies here are often add-ons from a later landscaping project. Permits for plumbing work go through the Town's PIPER portal, but check the Town GIS first: some addresses near the edges fall under Orange County or Chapel Hill.

Common device types, side by side

Which one your property needs depends on the hazard and the utility's rules, so let OWASA or the plumber confirm before buying parts.

Signs the device needs attention

• The yearly OWASA test date has passed or is close
• Water drips from the device with no sprinkler zone running
• An RP relief valve dumps water every time the system starts
• Sprinkler heads lost pressure after the device was worked on
• Cracks or bulges in the brass after a cold snap

Timing it right

Many owners book the annual test in early spring, when irrigation comes back on and any winter damage shows up. If you drain the system in fall, schedule the test before shutdown so a failed part can be fixed while the weather is still mild.