Your local water, explained
Georgia water quality reports
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Counties are listed by population. Open a county to see the provider selector, water highlights and searchable results.
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Fulton County
Choose the name on your bill. In the 2025 reporting year, Atlanta’s highest quarterly TTHM running annual average was 70.5 µg/L; North Fulton reported 59.1 µg/L. Both compare with an 80 µg/L limit.
Browse reports → GeorgiaGwinnett County
The utility’s separate mineral table puts hardness at 1.05–1.87 grains per gallon. Its 2025 report also lists a 1.43 mg/L average chlorine residual. These figures support choosing filtration for taste or odor without automatically adding a softener.
Browse reports → GeorgiaCobb County
In 2025, the wholesale supplier’s average hardness was 31.7 mg/L at Quarles and 35.1 mg/L at Wyckoff. The county distribution system reported a highest TTHM running annual average of 60 µg/L. Those numbers describe different sampling locations.
Browse reports → GeorgiaDeKalb County
DeKalb reported free chlorine averaging 1.70 mg/L in 2025. For lead, the 90th percentile was 5.6 µg/L, with one tap above the report’s action level. Start with the county utility on your bill and read the sampling basis alongside each number.
Browse reports → GeorgiaChatham County
Savannah Main relies mostly on the Floridan Aquifer; Industrial & Domestic draws from Abercorn Creek. The I&D report includes a May 2025 turbidity incident. Choose the system you actually receive before reading its numbers.
Browse reports → GeorgiaCherokee County
CCWSA’s separate hardness guidance puts the supply at about 0.9 grains per gallon. Its 2025 main-system report lists a chlorine result of 1.24 mg/L and fluoride of 0.64 mg/L. The Salacoa system has its own report.
Browse reports → GeorgiaClayton County
The authority lists fluoride at 0.71 mg/L and TTHM at 69.8 µg/L. For TTHM, the sample range reached 83.8 µg/L; the running-average result is the relevant comparison with the 80 µg/L limit.
Browse reports → GeorgiaForsyth County
Forsyth County’s 2026 report lists 2025 free chlorine at 1.91 mg/L and TTHM at 31.98 µg/L. It also includes lead and copper tap samples collected in 2024. Use the county report only if the county is your supplier.
Browse reports → GeorgiaHenry County
The authority’s 2025 data puts chlorine at 2.36 mg/L and fluoride at 0.72 mg/L. Its TTHM sample maximum was 81.4 µg/L, but the four-quarter result was below the 80 µg/L limit.
Browse reports → GeorgiaHall County
The Gainesville utility’s 2025 average is about 1.2 grains per gallon, in the soft range. Its highest reported TTHM running annual average was 26.53 µg/L. These are Gainesville Water Resources figures, not a Hall County average.
Browse reports →Choose the water provider on your bill
City of Atlanta Department of Watershed Management
Fulton County · Regional hardness context; utility-specific contaminant results.
Browse reports → UtilityFulton County Public Works — North Fulton
Fulton County · Regional hardness context; utility-specific contaminant results.
Browse reports → UtilityGwinnett County Department of Water Resources
Gwinnett County · Soft utility average (1.34 gpg)
Browse reports → UtilityCobb County Water System
Cobb County · Soft at both plants (31.7 / 35.1 mg/L)
Browse reports → UtilityDeKalb County Department of Watershed Management
DeKalb County · Regional hardness context; utility-specific contaminant results.
Browse reports → UtilityCity of Savannah — Main System
Chatham County · Regional hardness context; utility-specific contaminant results.
Browse reports → UtilityCity of Savannah — Industrial & Domestic (I&D)
Chatham County · Regional hardness context; utility-specific contaminant results.
Browse reports → UtilityCherokee County Water and Sewerage Authority — Main System
Cherokee County · Soft · utility guidance (16 mg/L as CaCO₃)
Browse reports → UtilityClayton County Water Authority
Clayton County · Regional hardness context; utility-specific contaminant results.
Browse reports → UtilityForsyth County Department of Water & Sewer
Forsyth County · Regional hardness context; utility-specific contaminant results.
Browse reports → UtilityHenry County Water Authority
Henry County · Regional hardness context; utility-specific contaminant results.
Browse reports → UtilityCity of Gainesville Department of Water Resources
Hall County · Soft annual average (21.2 mg/L)
Browse reports →These ten counties had 5,367,523 residents in the July 1, 2025 Census estimates (47.5% of Georgia). This is the population of the counties, not a count of people served by the utilities summarized here. U.S. Census Bureau population estimates
What this means for your home
Utility reports describe public systems, not your tap or a current service advisory.
Results retain the utility, sample year, units and comparison used in the source. Hardness is shown separately as a utility measurement, utility guidance or regional estimate. USGS categories describe mineral content, not drinking-water safety.
Your water → your home → your system
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