Georgia water quality
Georgia has 2,383 active public water systems (5,261 on file total), 1,722 of them graded by TapGraded.
Grade distribution
Biggest water systems
ATLANTA
ATLANTA, GA · 1,089,893 served
GWINNETT CO. DEPT. OF WATER RESOURCES
LAWRENCEVILLE, GA · 975,000 served
DEKALB COUNTY
DECATUR, GA · 743,000 served
COBB COUNTY
MARIETTA, GA · 695,000 served
NORTH FULTON COUNTY
ALPHARETTA, GA · 434,517 served
CLAYTON COUNTY WATER AUTHORITY
MORROW, GA · 298,374 served
COLUMBUS
COLUMBUS, GA · 229,000 served
CHEROKEE COUNTY
CANTON, GA · 224,427 served
AUGUSTA-RICHMOND CO WS
AUGUSTA, GA · 204,000 served
HENRY COUNTY WATER AUTHORITY
JACKSON, GA · 187,437 served
Lowest-graded systems
Active, graded systems serving at least 10,000 people, ordered by lowest Tap Grade first.
VALDOSTA
VALDOSTA, GA · 48,959 served
THOMSON-MCDUFFIE CO W&S COMM
THOMSON, GA · 21,312 served
BALDWIN COUNTY
MILLEDGEVILLE, GA · 23,067 served
UNION CITY
UNION CITY, GA · 18,636 served
LOWNDES CO.-NORTH LOWNDES CO. WS
VALDOSTA, GA · 13,190 served
PORT WENTWORTH
PORT WENTWORTH, GA · 11,000 served
SAVANNAH-I & D
PORT WENTWORTH, GA · 10,500 served
LEE COUNTY UTILITIES AUTHORITY
LEESBURG, GA · 20,194 served
TOCCOA
TOCCOA, GA · 28,711 served
KINGSLAND
KINGSLAND, GA · 25,245 served
Cities in Georgia
Source: EPA SDWIS/ECHO · Data as of 2026Q2