Suwanee Water Hardness & Quality Report (2026)

Suwanee, Georgia receives its water from the Gwinnett County Department of Water Resources (DWR), which serves the city as part of its broader service area in Gwinnett County, northeast of Atlanta. The utility draws water primarily from the Chattahoochee River via intake at Lake Lanier, treated at the T. Jackson King III Water Production Plant (formerly F. E. Andersen Plant) and other facilities. Service extends to residential, commercial, and industrial users across Suwanee and surrounding communities, with distribution through an extensive pipeline network meeting EPA standards.

The Chattahoochee River watershed spans the southern Appalachian Piedmont, draining from the Blue Ridge Mountains through granitic and metamorphic terrains. Underlying rocks are Precambrian to Paleozoic metamorphic and igneous formations — gneiss, schist, and granite — that lack significant limestone or dolomite, contributing minimal dissolved calcium and magnesium. The local groundwater component taps the surficial aquifer system overlying fractured crystalline bedrock, which further resists mineral pickup, producing characteristically soft water with low TDS typical of the upper Georgia Piedmont.

As a soft water supply, Suwanee's water causes minimal scale buildup in pipes, water heaters, and dishwashers, extending appliance lifespan compared to harder regions. Limescale rarely accumulates, reducing routine maintenance demands. No water softener is typically recommended; most households find regular filter changes sufficient for quality. Gwinnett DWR reports consistent compliance with EPA standards, including lead and copper rule adherence through corrosion control, with treatment involving coagulation, sedimentation, filtration, and disinfection; pH is adjusted for stability and no major violations were recorded in the 2024 CCR.