Johns Creek gets water and sewer from Fulton County, whose backflow program requires yearly testing of testable devices by a certified tester, and the city's Building Division requires a Trade Permit for plumbing and gas work. Fulton's main north Fulton treatment plant is actually in Johns Creek. Call the number on this page to be connected with a local plumber in Johns Creek.

Which rules apply to a Johns Creek business's backflow device?
Fulton County's. The city does not provide water or sewer, and Fulton County Public Works serves north Fulton, treating Chattahoochee River water at the Tom Lowe Atlanta-Fulton County plant, which sits in Johns Creek. The county requires customers to install approved backflow devices matched to the hazard level of the connection. Testable devices must be tested every year by a certified tester, repaired if they fail, and the results submitted through SwiftComply. The program coordinator's office is at 404-612-4226.
Medical and dental offices, restaurants, salons and buildings with irrigation or fire sprinkler connections are the usual places a plumber finds these assemblies.
What does the city need before plumbing work starts?
A Trade Permit. The City of Johns Creek requires one for any electrical, gas, mechanical, plumbing or low-voltage system, applied for through its Customer Self-Service portal. Permit technicians answer at 678-512-3250. Replacing a water heater, adding a restroom in a tenant buildout or rerouting gas piping to a kitchen all fall under it. Your plumber normally pulls the permit as part of the job.
Which pipes are ours to fix?
Fulton County repairs the water line from the main to the meter. The owner is responsible from the meter to the building. On the sewer side, the owner's lateral runs from the building to the property line, and Fulton's flyer says that holds even when a blockage sits in the public right-of-way. North Fulton drinking water emergencies go to 770-640-3040; sewer emergencies to 404-612-3061.
A short local note
Johns Creek grew fast in the 1980s and 1990s; about two-thirds of its homes date from those decades, and many shopping centers and office parks along Medlock Bridge and State Bridge roads are the same age. That means a lot of original water heaters, flush valves and supply lines are now 25 to 45 years old. When one fails, it's worth asking the plumber whether the others in the building are close behind.
Plumbers who take commercial calls here can usually work early or after closing, which matters for medical offices and restaurants that can't shut a restroom during the day. Mention your hours when you call, and if the building has a property manager, have their contact ready so shared lines can be approved without a second trip.
Commercial Plumbing questions in Johns Creek
Does a business here need a backflow prevention assembly?
Which office issues the permit for commercial plumbing work?
How can we find out what our water service line is made of?
Where should staff look for the main water shutoff?
More plumbing services in Johns Creek
Commercial Plumbing nearby
Helpful guides
Sources
- Fulton County Water Services: Backflow Prevention
- Fulton County Public Works: Water and Sewer Service Laterals
- Fulton County Water Services: Emergency Repairs
- Fulton County Public Works 2026 Water Quality Report
- City of Johns Creek: Guide for the Online Permit Portal
- Johns Creek housing by year built (ACS 2019-2023, via Point2Homes)
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