Atlanta
Metro Atlanta's reliance on a single reservoir and decades of interstate 'water wars' have made supply security and reuse central to the booming Southeast's largest city.
atlanta
surface water (rivers/reservoirs) · local government · PWSID GA1210001
Below EPA's 15 ppb lead action level at last testing.
Source: EPA Safe Drinking Water Information System (SDWIS) · 2026 Q1
Metro Atlanta grew explosively while depending heavily on Lake Lanier, a single federal reservoir on the Chattahoochee River. That dependence triggered decades of litigation — the so-called Tri-State Water Wars — with Alabama and Florida over downstream flows.
Severe droughts in 2007–2008 and the 2010s drove the region to invest in conservation, reservoir storage, and indirect potable reuse, including returning highly treated water upstream of its intake.
Atlanta's story shows that even the rain-fed Southeast faces hard water-supply limits when growth concentrates around a constrained source.
DeKalb County water quality
Source: EPA SDWIS · 2026 Q1
At a glance
- Heavy reliance on Lake Lanier
- Decades of Tri-State Water Wars litigation
- Indirect potable reuse and storage investments
Statewide drought history
% of Georgia in severe+ drought (Extreme (D3) now).
Source: U.S. Drought Monitor
Common questions
Is tap water safe in Atlanta?
Atlanta's largest water system, ATLANTA, serves about 1,089,893 people. EPA records show 5 health-based violation(s) since 2016 and a most-recent 90th-percentile lead level of 1.4 ppb (EPA action level is 15 ppb). Always check your own provider's annual Consumer Confidence Report.
Where does Atlanta get its water?
ATLANTA draws primarily from surface water (rivers/reservoirs), part of Georgia's supply from Chattahoochee River, Lake Lanier, Floridan aquifer.
Related water issues
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