Part of Roswell gets water from the City of Roswell Water Utility and the rest from Fulton County, while all sewer is handled by Fulton County. Plumber Atlanta is a free referral service, not a plumbing company. Call the number on this page to be connected with a local plumber in Roswell.

Plumbing services in Roswell
Which water system serves your street?
Roswell still treats some of its own water, but only part of the city is connected to that system. The City of Roswell Water Utility serves about 5,600 customers through 89 miles of main, drawing from Big Creek and treating it at the Roswell Water Treatment Plant, with extra treated water bought from the North Fulton plant in Alpharetta. Everyone else in Roswell gets Chattahoochee River water from Fulton County, treated at the Tom Lowe Atlanta-Fulton County plant in Johns Creek. The city does not publish a street-by-street list, so the quickest check is the name on your water bill.
Sewer is simpler: Fulton County handles every sewer line in Roswell, even for homes on city water. Its North Fulton sewer emergency line is 404-612-3061. Both water systems disinfect with chlorine rather than chloramine and add fluoride; neither report gives a hardness figure.
Who to call for a leak
Roswell Water Utility customers report leaks at (770) 641-3707 on weekdays or through police dispatch at (770) 640-4100 after hours. Fulton County water customers call (770) 640-3040. For Fulton County addresses, the county repairs the service line from main to meter, the owner handles meter to house, and the owner also covers the sewer lateral out to the property line, even if the blockage turns up under the right-of-way.
Mill-town roots, mostly newer houses
Roswell's charter dates to 1854, and the town grew around a textile mill whose ruins still stand along Vickery Creek near the Riverwalk Trail and Bulloch Hall. Today about 92,833 people live here, roughly 20 miles north of downtown Atlanta along GA-400. Despite that history, most homes are not old: the median year built is 1989 and only about 22% predate 1980. Expect calls about second-generation water heaters, worn valves and tired supply lines in 1980s and 1990s subdivisions, with older piping more likely close to the historic district.
Backflow and permits
Backflow rules depend on the water system. Roswell Water Utility keeps an approved tester list, wants test forms within 30 days with before-and-after photos and a utility data tag, and allows only master plumbers who completed a dedicated repair course to fix assemblies. Fulton County requires testable devices to be tested every year by a certified tester who reports through SwiftComply. Permits come from the City of Roswell Community Development Department (770-641-3780), whose application treats plumbing as a separate trade with its own affidavit and credentials.
Gas, and how Roswell differs from Atlanta
Atlanta Gas Light maintains the gas pipes across north Fulton; marketers only sell the gas. If you smell gas, get out of the house, then call 911 and Atlanta Gas Light at 877.427.4321. Unlike a home in Atlanta, a Roswell house may be on either of two water systems and sends its wastewater to Fulton County. Call the number on this page with your address and the problem, and you'll be connected with an independent plumber who works in Roswell.
Common questions in Roswell
How do I know if my Roswell home is on city water or Fulton County water?
Who handles sewer in Roswell?
Who can repair a backflow preventer on Roswell water?
Is Roswell's water treated with chloramine?
Nearby cities and towns
Sources
- Wikipedia: Roswell, Georgia
- City of Roswell: Water Utility
- City of Roswell: Water quality report
- City of Roswell: Backflow tester requirements
- City of Roswell: Backflow repair requirements
- City of Roswell: Building permit application
- Fulton County: 2026 Water Quality Report
- Fulton County Water Services: Backflow prevention
- Fulton County: Water and sewer service laterals flyer
- Point2Homes: Roswell demographics (housing age)
- Develop Fulton County: Infrastructure
- Atlanta Gas Light: Contact us
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