Clarkston Water Hardness & Quality Report (2026)

Clarkston, Georgia, relies on the DeKalb County Department of Watershed Management for its drinking water. The primary source is surface water drawn from the South Fork Peachtree Creek, which flows into the Chattahoochee River system. This water is treated at DWM facilities, including the North Plant and South Plant, utilizing conventional methods like coagulation, sedimentation, filtration, and disinfection before distribution to over a million residents across the metro Atlanta region. The journey begins in the Peachtree Creek watershed, nestled within the Piedmont's rolling landscape.

The geology beneath Clarkston's water supply consists of ancient metamorphic rocks such as gneiss and schist, characteristic of the Piedmont region. Unlike areas with soluble limestone formations, these crystalline bedrock types do not readily dissolve minerals like calcium and magnesium. Consequently, the water flowing over weathered soils and fractured bedrock picks up fewer hardness-causing minerals. This geological makeup, devoid of extensive carbonate deposits found in coastal Georgia, consistently yields a soft water supply for the area.

Homeowners in Clarkston will likely notice the benefits of soft water, such as easily lathering soap and reduced scale buildup in appliances like water heaters and dishwashers, potentially extending their lifespan. Staining on fixtures is also less common with this type of supply. While a water softener isn't typically necessary, it's wise to check the anode rod in your water heater periodically and consider corrosion inhibitors if your pH levels indicate a need. The DeKalb County 2025 Drinking Water Quality Report confirms all federal and state standards are met, and while some common disinfection byproducts like haloacetic acids were noted, DWM conducts extensive annual testing to ensure safety.