Greenfield Water Hardness & Quality Report (2026)

Greenfield, Massachusetts, in Franklin County — the Franklin County seat on the Connecticut River at the mouth of the Deerfield River, a historic western Massachusetts mill and tobacco farming community near the Connecticut-Vermont border — receives its municipal water from the Greenfield Water Department, which draws from the Greenfield Reservoir (Eunice Williams Pond) or supplemental Deerfield River watershed sources in Franklin County.

The very soft 30.5 mg/L hardness and very low TDS of 50.1 mg/L reflect the Deerfield River-upper Connecticut River watershed's New England Highlands crystalline geology. The Deerfield River drains the Berkshire Hills (Precambrian Grenville gneiss, Taconian schist, and Devonian Hawley Formation amphibolite) and the Vermont Green Mountains southern spur. These ancient crystalline metamorphic rocks produce very soft, low-mineral runoff — the classic New England highland supply character. The Greenfield Reservoir is a protected hilltop impoundment, further ensuring soft, clean water.

At 30.5 mg/L, Greenfield's water is very soft — excellent for household use. Scale essentially never forms, soap lathers richly, and appliances maintain maximum efficiency. Annual descaling is more than sufficient. The PFAS level of 5.2 ppt warrants a certified drinking water filter — the Turners Falls (Montague, MA) industrial corridor (historic Monsanto chemical manufacturing in Greenfield-Montague area), the Westover Air Reserve Base (Chicopee, downstream Connecticut River), and the Franklin County agricultural-industrial PFAS background contribute to Greenfield's PFAS readings.