South Suffolk Water Hardness & Quality Report (2026)

South Suffolk, Virginia — the southern residential and commercial districts of the City of Suffolk in Hampton Roads, the former Nansemond County — draws its municipal water supply from the City of Suffolk Department of Public Utilities, which operates wells accessing the Virginia Coastal Plain confined aquifer system and surface water from local Nansemond River watershed area sources. Suffolk is geographically the largest city in Virginia by area, straddling the Coastal Plain and the historic Dismal Swamp region. Water hardness in South Suffolk measures 120 mg/L — classified as moderately hard.

South Suffolk's moderate hardness reflects the Virginia Coastal Plain aquifer chemistry in the Suffolk area. The city's confined aquifer system draws from the Cretaceous Potomac Formation (a complex alternating sand and clay unit underlying all of Virginia's Coastal Plain), the Eocene Nanjemoy and Aquia Formations (glauconitic and calcareous sand), and potentially the Oligocene–Miocene Kirkwood Formation sands in the deeper Coastal Plain section. The Coastal Plain confined aquifers in the Suffolk–Nansemond area show moderate dissolved calcium from the calcareous Eocene sands and possible carbonate cement dissolution within the Potomac Formation sands — producing the 120 mg/L moderately hard supply characteristic of the Hampton Roads coastal plain area.

At 120 mg/L, South Suffolk residents encounter moderate scale accumulation. Faucet aerators and showerheads develop deposits after several months — monthly cleaning with citric acid solution is practical maintenance. Dishwashers produce cleaner glassware with rinse-aid. City of Suffolk Department of Public Utilities consistently delivers water meeting all Virginia DEQ and EPA Safe Drinking Water Act requirements.