Atlanta GA metro: water quality. Metro Atlanta sprawls across 29 counties and draws its water from multiple sources.
Metro Atlanta sprawls across 29 counties and draws its water from multiple sources. The city of Atlanta itself is served by the Department of Watershed Management, pulling from the Chattahoochee River and treating water at the Hemphill and Chattahoochee plants. But Atlanta represents only a fraction of this 6.1 million person metro. Savannah, on the coast, taps the Floridan Aquifer. Augusta draws from the Savannah River. Suburban counties like Cobb, Gwinnett, and DeKalb each run their own systems – Gwinnett County's massive Lanier Filter Plant alone serves over a million people using Lake Lanier water.
This metro is really three or four distinct water regions stitched together by census boundaries. Water quality in Buckhead has almost nothing in common with water quality in coastal Savannah.
UCMR5 data for the Atlanta metro reveals a mixed picture. The Chattahoochee River receives treated effluent from upstream communities and has shown detectable PFAS in EPA monitoring. Robins Air Force Base, located about 100 miles south of Atlanta in Warner Robins, has been flagged for PFAS contamination from AFFF foam – while outside the metro boundary, its groundwater plume is tracked by state regulators monitoring the broader region.
Georgia has not established state-specific PFAS MCLs, deferring to federal standards. The Georgia Environmental Protection Division (EPD) has conducted targeted sampling near known point sources but has not published a statewide PFAS investigation comparable to what states like Michigan or North Carolina have done.
According to a 2024 report from the Georgia Water Coalition, 12 community water systems in the metro Atlanta region reported PFAS detections under UCMR5. Levels generally fell below the new federal MCLs of 4 ppt for PFOA and PFOS, but several systems were close enough to those limits that future testing could push them over.
Atlanta's surface-water-dominant supply avoids the worst groundwater contamination seen in states with heavy military or manufacturing PFAS legacies. But the Chattahoochee's role as both drinking water source and treated wastewater receiver creates an inherent tension. During low-flow periods, the ratio of effluent to natural flow increases, concentrating whatever contaminants upstream plants discharge.
Within Georgia, Atlanta's water quality generally outperforms smaller communities near military installations and textile manufacturing sites in the northern part of the state. Nationally, the metro benefits from abundant rainfall and surface water – a different world from the water scarcity challenges facing western metros.
Visit our Georgia state page for more.
Given the variation across this 29-county metro, the most useful thing you can do is figure out exactly which system serves your home and what it has reported.
Check your water with our free lookup. We'll show monitoring data specific to your utility and ZIP code. If you're in a suburban county served by a smaller system, or if your data shows detections near federal limits, filtering your drinking water is a reasonable step. Our water filter guide explains which options work for the contaminants found in Georgia water systems. For trend data and historical context, pull a detailed report.