Hyde Park Water Hardness & Quality Report (2026)

Hyde Park, Massachusetts receives its drinking water from the Massachusetts Water Resources Authority (MWRA), which serves the greater Boston area including Suffolk County. The primary sources are the Quabbin Reservoir (120 billion gallons capacity) and Wachusett Reservoir (65 billion gallons), located in central Massachusetts. Water is treated at the John J. Carroll Water Treatment Plant in Marlborough, MA, using ozone disinfection, chloramination, and pH adjustment, then distributed through 4,000 miles of pipeline to over 3 million people across 51 communities. The Boston Water and Sewer Commission (BWSC) handles local distribution for Hyde Park.

The Quabbin Reservoir watershed spans 121 square miles of protected forest in the Ware River basin, while Wachusett covers 64 square miles in the Nashua River basin. Both are underlain by hard metamorphic and igneous rocks—schist, gneiss, and granite—from the Ordovician-Devonian periods, with thin glacial deposits and podzolic soils low in carbonates. This non-calcareous geology means rainwater percolation dissolves very few hardness-causing ions, yielding a minimally mineralized, very soft supply with naturally low alkalinity.

With soft water, scale buildup in water heaters, dishwashers, and pipes is negligible, and no water softener is needed or recommended. Soap lathers easily, reducing skin dryness, though very low mineral content may slightly accelerate pipe corrosion if pH is not managed. MWRA and BWSC maintain a pH of 9.0–9.5 specifically to control corrosion, with no lead action exceedances (90th percentile under 5 ppb) and copper in full compliance. PFAS levels are below detection (PFOA/PFOS under 2 ng/L), and treatment includes ozonation, UV disinfection, and fluoridation at 0.7 ppm, with all CCRs confirming zero MCL violations.