Fulton County, Georgia: drinking water report. Fulton County stretches north and south of Atlanta, serving about 1.1 million residents.
Fulton County stretches north and south of Atlanta, serving about 1.1 million residents. The City of Atlanta's Department of Watershed Management is the largest provider, drawing from the Chattahoochee River and smaller tributaries. North Fulton communities like Roswell and Alpharetta may receive water from Fulton County's own system or from the city. The Chattahoochee is a regulated river, with flows managed by the Army Corps of Engineers at Buford Dam and Lake Lanier.
Atlanta's water infrastructure has been under federal consent decree since 1998 due to combined sewer overflows that discharge partially treated wastewater into waterways during heavy rain. The city has invested over $4 billion in sewer improvements, but CSO events still occur. This affects downstream water quality and creates periodic turbidity spikes that increase treatment chemical demand.
UCMR5 data shows low-level PFAS detections in Fulton County water systems. According to the Georgia Environmental Protection Division's 2024 monitoring data, five public water systems in the county reported PFAS above detection limits. Dobbins Air Reserve Base in neighboring Cobb County is a documented PFAS source whose contamination plume may affect shared groundwater resources.
Atlanta's supply is adequate and meets federal standards, but the combined sewer system introduces variability during storm events. If you notice changes in water clarity or taste after heavy rain, that is the CSO system at work.
Check your water to see monitoring data for your specific area. A carbon block filter handles taste, chlorine, and some PFAS. For broader protection, reverse osmosis covers more contaminants. Our water filter guide helps you choose. Pull your detailed report for trend data, and visit our Georgia page for statewide context.
Drinking water is one exposure route. These federal datasets also cover Fulton County, GA.
The EPA places Fulton County, GA in Zone 1 - the EPA's highest-risk category, where the predicted average indoor radon level is above 4 pCi/L. Zone maps predict an area's radon potential from geology and existing indoor readings; they say nothing about a specific house. Testing is the only way to know your own level.
35% of homes in Fulton County, GA were built before 1980, and 9% before 1950. Residential lead paint was banned in 1978, so housing age is the strongest available proxy for lead-paint exposure. This describes the county's housing stock, not any one home.
Modelled annual fine-particle pollution (PM2.5) in Fulton County, GA averages 9.6 µg/m³, above the EPA's annual standard of 9 µg/m³. These are CDC modelled county estimates rather than readings from a specific monitor.
How radon zones work · Air quality by county · Lead exposure guide