Gardner Water Hardness & Quality Report (2026)

Gardner, Massachusetts, in Worcester County — the Chair City of the World (nationally dominant furniture manufacturing heritage from the 19th and 20th centuries), a Worcester County city in the north-central Massachusetts highlands with a strong Portuguese and French-Canadian immigrant heritage — receives its municipal water from the Gardner Water Department, which draws from Dunn Pond, Kendall Pond, and local reservoir impoundments in the North Nashua River watershed of north-central Worcester County.

The moderately soft 103.5 mg/L hardness and TDS of 254.6 mg/L are harder than expected for central Massachusetts highlands — the typical Quabbin-MWRA supply (15-30 mg/L raw) is very soft, but Gardner draws from local North Nashua watershed reservoirs rather than the MWRA system. The North Nashua River watershed drains the Central Massachusetts Upland — terrain underlain by Devonian granite and Proterozoic metavolcanic rocks of the Merrimac Terrane and the Nashoba Terrane (biotite granite, granodiorite, and calc-silicate gneiss). The calc-silicate gneiss terrain in the Nashoba-Merrimac belt contributes moderate dissolved calcium from wollastonite and calcium silicate weathering, producing harder water than the pure granite-Quabbin supply zones.

At 103.5 mg/L, Gardner's water is moderately soft — comfortable for household use. Scale forms slowly over months, soap lathers well, and appliances operate efficiently. Semi-annual descaling is adequate. The PFAS level of 10.3 ppt is very high and warrants a certified reverse osmosis drinking water filter — the Fort Devens corridor (former US Army base in Ayer MA — a documented AFFF source in the North Nashua watershed), and the Central Massachusetts manufacturing legacy (textile mills, furniture manufacturing) contribute to Gardner's elevated PFAS readings.