Windsor Locks Water Hardness & Quality Report (2026)

Windsor Locks, Connecticut, in the Capitol Planning Region — a Capitol Planning Region town adjacent to Windsor and Enfield on the Connecticut River in north-central Connecticut — receives its water from the Connecticut Water, drawing from the Connecticut River or Scantic River reservoir (Capitol Planning Region) through the north-central Connecticut distribution.

The very soft 41 mg/L hardness and low TDS of 75.7 mg/L reflect the north-central Connecticut Capitol Planning Region Connecticut River supply's very soft character — the Triassic Hartford Basin slightly calcareous siliciclastics and Precambrian Berkshire Schist insoluble contribute minimal calcareous contact, producing very soft water typical of the Connecticut River valley north-central communities (compare Derby CT: 56/101 softer from the Naugatuck River supply; Windsor Locks similar very soft range). The Connecticut River at Windsor Locks — Triassic Hartford Basin siliciclastics (slightly calcareous — primary hardness contributor), Precambrian Berkshire Schist (insoluble — primary dilutant), and Quaternary Connecticut River alluvium (insoluble — secondary dilutant).

At 41 mg/L, Windsor Locks' water is very soft — scale forms very slowly in appliances, dishwashers remain efficient, and no softening is needed. Annual descaling is appropriate. The PFAS level of 6.8 ppt warrants a certified drinking water filter — the Capitol Planning Region north-central Connecticut military (Bradley Airport) and industrial corridor contribute to Windsor Locks' elevated PFAS readings.