Wallingford Center Water Hardness & Quality Report (2026)

Wallingford Center, Connecticut, in the South Central Connecticut Planning Region — a community within Wallingford adjacent to Meriden and North Haven in the Quinnipiac River valley of south-central Connecticut — receives its municipal water from the Wallingford Water Division, drawing from Wallace Pond or the Quinnipiac River watershed reservoirs in the central Connecticut corridor.

The moderately hard 93 mg/L hardness and TDS of 236.5 mg/L reflect the Quinnipiac Valley's Central Connecticut Valley geology. The watershed drains the Triassic Hartford Basin (New Haven Arkose — calcareous sandstone, minor hardness contributor) and the Jurassic East Rock Basalt (diabase — slightly calcareous). The TDS reading of 236.5 mg/L is somewhat elevated relative to the hardness, possibly reflecting Quinnipiac Valley industrial watershed contributions to dissolved solids beyond calcium carbonate.

At 93 mg/L, Wallingford Center's water is moderately hard — scale builds in kettles and appliances over months, dishwashers benefit from rinse aid, and faucet aerators need periodic cleaning. Quarterly descaling is appropriate. The PFAS level of 11.3 ppt is very elevated and warrants a certified reverse osmosis drinking water filter — the Quinnipiac River industrial corridor (Meriden-Wallingford — the Connecticut Naugatuck-Quinnipiac industrial belt), legacy manufacturing PFAS sources, and the south-central Connecticut PFAS complex contribute to Wallingford Center's very elevated readings.