Lilburn Water Hardness & Quality Report (2026)

Gwinnett County Department of Water Resources supplies Lilburn, Georgia, drawing primarily from the Chattahoochee River and supplemented by groundwater from local wells. Raw water undergoes extensive treatment at facilities like the D.W. Reynolds Water Reclamation Facility, T.W. Allen, and Roger McClure plants. These operations use processes such as coagulation, sedimentation, filtration, and disinfection to deliver safe drinking water to over 300,000 residents across unincorporated Gwinnett County and several municipalities.

The water's journey begins in the Chattahoochee River watershed, which flows through the Piedmont region. Here, the water interacts with ancient metamorphic rocks, including granitic gneiss and schist, dating from the Precambrian to Paleozoic eras. Groundwater sources tap into shallow aquifers found above these crystalline bedrock layers. Because these geological formations are largely silica-rich and lack significant limestone or dolomite deposits, the water naturally remains soft, with only minimal amounts of dissolved calcium and magnesium picked up from soil weathering.

Residents of Lilburn will find that this soft water means less trouble with limescale buildup on faucets, pipes, and appliances like water heaters and dishwashers. You'll notice soap lathers more readily, and glassware tends to dry spot-free. Installing a water softener isn't typically advised, as it might make the water too aggressive, potentially leading to plumbing corrosion. Instead, occasional descaling of appliances may be beneficial if any iron staining appears. Gwinnett DWR maintains high standards, consistently meeting EPA regulations, with pH levels typically between 7.5 and 8.5 post-treatment.