Candler-McAfee Water Hardness & Quality Report (2026)

Candler-McAfee is served by the City of Atlanta Department of Watershed Management, which supplies drinking water to over 486,000 residents across the metro Atlanta area. The primary water source is the Chattahoochee River, supplemented by reservoir storage. Treatment plants process raw river water before distribution to the service area, which includes DeKalb County neighborhoods such as Candler-McAfee. The utility employs chlorination as the primary disinfection step and carefully manages pH throughout the treatment and distribution process.

The Chattahoochee River watershed dominates the region's hydrology. The underlying geology consists primarily of Precambrian metamorphic rocks — gneiss and schist — characteristic of the Georgia Piedmont. This crystalline bedrock produces naturally soft water with moderate Total Dissolved Solids, as metamorphic minerals dissolve slowly and contribute few calcium or magnesium ions. However, upstream agricultural activity in the Chattahoochee watershed introduces fertilizer-derived nitrate and nitrite contamination into the supply.

At this soft hardness level, residents experience minimal scale buildup in appliances and water heaters, and soaps and detergents lather readily. However, soft water's corrosivity can leach lead and copper from older plumbing if pH is not carefully controlled. Atlanta's water receives an Overall Water Score of C from independent analysis, with eight contaminants exceeding recommended safety levels — including trihalomethanes (chloroform, bromodichloromethane, dibromochloromethane), chromium-6, radium, nitrate/nitrite, and dichloroacetic acid. Most households do not require water softening, though treatment systems may be beneficial for specific contaminants.