Milton Water Hardness & Quality Report (2026)

Milton, Massachusetts, in Norfolk County — a major south Boston affluent suburban community (Milton is a significant Norfolk County town — one of the most affluent and prestigious suburbs of Boston; Milton is situated along the Blue Hills Reservation, one of the largest urban green spaces in Massachusetts (the Blue Hills Reservation in Milton and Canton is one of the most important natural areas in the greater Boston area — the Blue Hills Skyline Trail and the Blue Hills Ski Area are major recreational resources for the greater Boston metropolitan community); Milton is one of the most historically important communities in Massachusetts (Milton was settled in 1640 as part of Dorchester; Milton Academy (founded 1798) is one of the most prestigious independent secondary schools in the United States, consistently ranked among the best prep schools in the country); Milton is the birthplace of George H.W. Bush (the 41st President of the United States — born in Milton in 1924), a diverse Norfolk County community with a primarily professional, academic, and increasingly diverse suburban population, adjacent to Quincy and Dorchester in the south Boston Norfolk County corridor — draws its municipal water supply via the Massachusetts Water Resources Authority. Water hardness in Milton measures 57.5 mg/L — classified as moderately soft.

Milton's moderate softness reflects the south Boston Norfolk County MWRA supply's calcareous-poor character. The Quabbin Reservoir watershed drains the Precambrian Central Uplands granite (calcareous-poor). MWRA treatment produces the moderately soft 57.5 mg/L.

With hardness at 57.5 mg/L, Milton residents enjoy moderately soft water. Massachusetts Water Resources Authority consistently delivers water meeting all Massachusetts DEP and EPA Safe Drinking Water Act requirements.