Riverdale Water Hardness & Quality Report (2026)

Riverdale, Georgia, receives its drinking water from the Clayton County Water Authority (CCWA), which serves Clayton County and surrounding areas including Riverdale. The primary source is surface water from the Chattahoochee River, treated at the Robert B. Lee Water Treatment Plant and other CCWA facilities. The system also incorporates groundwater from local wells as needed. CCWA provides water quality reports (Consumer Confidence Reports or CCRs) detailing compliance and testing, available on their official site at ccwa.us. The Chattahoochee River watershed spans the Piedmont physiographic province, characterized by ancient metamorphic rock formations such as gneiss, schist, and amphibolite from the Precambrian and Paleozoic periods. These crystalline rocks weather slowly and release few soluble minerals, yielding soft water with low dissolved solids. Absent significant carbonate bedrock like limestone, the geology imparts a very soft to soft character to the supply, influenced further by upstream reservoir storage moderating chemistry.

With soft water, scale buildup is minimal, sparing appliances like water heaters, dishwashers, and washing machines from heavy mineral deposits. Soap lathers easily, reducing detergent use, and no significant spotting occurs on glassware or fixtures. Maintenance is straightforward with basic cleaning; a water softener is not recommended and could unnecessarily strip beneficial minerals or cause corrosion in pipes. CCWA reports indicate pH typically in the 7.0-8.5 range, compliant with EPA standards. The system meets lead and copper rules through corrosion control, with no exceedances noted in recent CCRs. PFAS levels are monitored; tapwaterdata.com notes two contaminants above EPA health goals but within legal limits for Riverdale's supply, recommending filtration if concerned. Treatment involves coagulation, sedimentation, filtration, and chlorination at plants like Robert B. Lee, ensuring disinfection while addressing organic matter from the river source.