City of Milford (balance) Water Hardness & Quality Report (2026)

City of Milford (Balance), Connecticut — the balance portions of the City of Milford outside the core Milford urban service area — draws its municipal water supply from the Indian River–Wepawaug River watershed via the Aquarion Water Company of Connecticut Milford Balance District. Water hardness measures 32 mg/L — classified as extremely soft.

Milford Balance's extremely soft supply — softer than the main Milford zone (57 mg/L) — reflects the outer Milford suburban watershed's particularly calcareous-poor coastal Connecticut geology. The Wepawaug and Indian River upper watersheds in the Orange–Milford hills area drain: the Connecticut Triassic–Jurassic Hartford Basin edge (calcareous-poor Portland Arkose); the New Haven Proterozoic crystalline terrain (Derby Phyllite and Milford Granite Gneiss — calcium-poor metamorphic and granitic coastal basement); and the Connecticut Quaternary glacial outwash (clean quartz sand from the coastal zone). The outer Milford suburban reservoir catchments in the upland watershed draw the most calcium-poor water from the highest calcareous-poor granitic upland, producing the extremely soft 32 mg/L — among the softest reservoir supplies in Connecticut.

With hardness at 32 mg/L, Milford Balance residents experience essentially no scale challenges. Aquarion Water Company consistently delivers water meeting all Connecticut DEEP and EPA Safe Drinking Water Act requirements.