The City of Austell Water System buys free-chlorinated water from the Cobb County-Marietta Water Authority, and its report doesn't state hardness, so test before buying a softener. Many Austell-mailing addresses outside the city's service area are on Cobb County water instead. Call the number on this page to be connected with a local plumber in Austell.

Austell runs its own water system serving about 3,300 customers, bounded by Clay Road, the Douglas County line, Noses Creek and Buttermilk Creek. Much of the 30106 and 30168 ZIP area in unincorporated south Cobb is likely on Cobb County Water System instead, so check your bill. City water is bought wholesale from the Cobb County-Marietta Water Authority, from Allatoona Lake and the Chattahoochee River, and disinfected with free chlorine. The report doesn't state hardness. Housing has a median build year of 1993, with about 41% predating 1980.
What to do now
- Confirm your water provider. The city system and Cobb County publish separate reports.
- Test hardness. No figure is listed, so measure at a cold tap.
- Handle taste with carbon. Free chlorine responds well to ordinary carbon.
- Check older plumbing. With so many homes built before 1980, rust may be the pipes.
- Get the right permit. Austell requires plumbing permits to install, alter or replace plumbing or water heating equipment, applied for through its online portal.
Symptom and likely cause
| Symptom | Likely cause |
|---|---|
| Rust in the first glass of the day | Aging galvanized supply line |
| Scale on fixtures | Possible hardness; confirm by test |
| Pool-like smell | Free chlorine from treatment |
| Grit on hot water | Water heater sediment |
| Filter cartridges clogging fast | Pipe shedding material upstream |
What affects cost
- Treatment alone versus treatment plus pipe or heater work
- Main line access and pipe type at the tie-in
- A drain and outlet nearby
- Permit for the job
- Ongoing salt and cartridges
The report links the lead service line inventory through Georgia EPD's 120Water portal; check it before buying a filter for a lead concern. Wastewater from the city's collection system flows to the Cobb County system for treatment. Austell also runs its own gas system, so if you smell gas during any work, leave first, then call 911 and Austell Gas at 770-948-1841 option 1 from outside.
In the older neighborhoods near the depot-town core, plan on the plumber checking the supply line before recommending equipment. Austell's history of flooding along Sweetwater Creek is one more reason to have the plumber look at the condition of older piping and the water heater in low-lying homes before adding anything new.
Water Softeners & Filtration questions in Austell
Does my water utility publish a hardness number?
Can a filter help with older galvanized or iron pipes?
Should I check my service line before adding filtration?
Does installing a softener or whole-house filter need a permit?
More plumbing services in Austell
Water Softeners & Filtration nearby
Helpful guides
Sources
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