Fall River Water Hardness & Quality Report (2026)

Fall River, Massachusetts, at the Rhode Island border in Bristol County on the Taunton River estuary, draws its municipal water supply from the City of Fall River Water Division, sourcing from the Watuppa Ponds — a natural lake system comprising Upper Watuppa Pond and Lower Watuppa Pond in Fall River and Westport, supplemented by the East Watuppa Watershed and associated tributaries in Bristol County. The Watuppa Ponds drainage basin lies in the southeastern Massachusetts coastal plain. Water hardness measures 45.5 mg/L — classified as soft.

Fall River's soft supply reflects the ancient crystalline geology of the Watuppa Ponds watershed. The Watuppa Ponds catchment drains terrain underlain by Precambrian Attleboro Granite (part of the southeastern New England Avalonian terrane), Pennsylvanian Dighton Conglomerate (coarse quartz pebble conglomerate), and Pleistocene Plymouth–Carver outwash sand — all siliceous, calcium-poor rock and sediment types. The Precambrian Avalonian granite and Pennsylvanian quartzite-pebble conglomerate of the Bristol County coastal plain are essentially calcium-free after prolonged weathering, and the sandy outwash overburden contributes no calcium to rainfall infiltration. The result is naturally soft water from this well-protected coastal plain watershed.

With hardness at 45.5 mg/L, Fall River residents enjoy soft water with minimal scale challenges. Soap lathers well. Faucet aerators and showerheads rarely need descaling. Dishwashers produce clean glassware. City of Fall River Water Division consistently delivers water meeting all Massachusetts DEP and EPA Safe Drinking Water Act requirements.