Backflow Testing in Grayson, GA

Who handles backflow for Grayson homes?

Gwinnett County. Grayson's Community Links page says it plainly: Gwinnett County is the water utility provider for the city, and the city has no water department. Backflow questions go to Gwinnett DWR's backflow staff at 678.376.4213 or DWRBackflow@GwinnettCounty.com.

How often does a device need testing?

We don't have a verified answer for Grayson. The county sources reviewed for this page didn't confirm the testing interval or which testers are accepted. Rather than guess, ask DWR whether your connection needs a device, how often it must be tested and who may test it. If you've already received a notice, it will spell out what's due.

Is a device likely at my house, and who owns it?

Grayson is one of Gwinnett's newest-feeling cities. It grew from 765 residents in 2000 to 4,730 in 2020, and the median home was built in 2012. Subdivisions built in that wave often include in-ground irrigation, and a sprinkler system is the usual reason a home needs backflow protection. Buried sprinkler lines run through soil and fertilizer; if pressure in the main drops, that water could flow back toward the house without a device in place.

Ownership is clear. Gwinnett is responsible for the pipes that bring water to the meter. All plumbing, pipes and fixtures between the meter and the home are the homeowner's, and that includes a backflow device. Testing, rebuilding and replacing it are your costs. A failed device is usually fixed with new checks and seals; a cracked body needs a new unit.

Building permits go through Grayson's own online portal, and City Hall is at 770-963-8017. Ask the city which permit applies before adding irrigation or moving a device.

A Grayson note

Builders sometimes set the device in a box near the curb that fills with soil and pine straw over a few seasons. Clear the lid before the plumber arrives, note the device's make and size, and close the irrigation valve if anything is leaking. Drain the sprinkler side and wrap any exposed device before the first hard freeze, since a cracked body has to be replaced rather than rebuilt. When you call, mention any letter from Gwinnett so the plumber knows what was requested.