Holly Springs requires a backflow prevention device on homeowner irrigation systems. The Town pages we found don't state how often devices are tested, who may test them or where reports go, so check any notice you receive. Call the number on this page to be connected with a local plumber in Holly Springs.

What happens when you call
You'll be connected with an independent plumber who works in Holly Springs. They'll ask whether you're installing irrigation, need a device tested or repaired, or have water leaking at the assembly. Have the Town's letter or email handy if you got one; it should list the due date and any filing instructions that aren't on the public pages.
A plumber who works in town regularly may already know the Town's current paperwork process, but confirm it with the Town if the notice isn't clear.
What changes the cost
- Installing a device on a new sprinkler system versus servicing an existing one
- The type and size of assembly
- Rebuild parts after a failed test
- Replacement after freeze damage
- Permits through Holly Springs Development Services for new installations or relocations
Holly Springs conditions
Holly Springs is a purchase system: it buys Cape Fear River water from Harnett Regional Water's Lillington plant. The town grew from about 900 people in 1992 to more than 41,000 in 2020, and its housing is among the newest in the Triangle, with a median build year of 2008. Most of those neighborhoods have irrigation, and the Town requires backflow devices on homeowner irrigation systems.
West of NC 55, part of town can use reclaimed (purple-pipe) water for irrigation. Reclaimed water is a separate system, and it must never be cross-connected with drinking water plumbing. If your sprinklers are on reclaimed water and your house is on potable water, keep the two systems completely apart, including at hose bibs.
The Town's lead service line inventory found all public and private service lines are non-lead, so a backflow job here rarely runs into old pipe. Most of the work here is maintenance: devices from the 2000s and 2010s building boom are now old enough for rubber parts and springs to wear out.
Quick checklist
- Find the device, usually near the meter or along the irrigation line
- Know whether your irrigation runs on potable or reclaimed water
- Have any Town notice ready
- Shut the irrigation supply if water is escaping
- Make sure the plumber can reach the meter area
Backflow Testing questions in Holly Springs
Does an in-ground sprinkler system need its own backflow assembly?
How often does a testable backflow assembly have to be checked?
I just bought a home with irrigation. What should I check about backflow?
Why is water coming out of the bottom of my backflow assembly?
More plumbing services in Holly Springs
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