Ashmont Water Hardness & Quality Report (2026)

Ashmont, Boston, Massachusetts — a major southeast Boston Dorchester neighborhood (Ashmont is a significant Boston neighborhood — a southeast Dorchester Boston neighborhood centered on the Ashmont MBTA Red Line terminus station; Ashmont is one of the most diverse and historically significant Boston neighborhoods, a primarily working-class and immigrant Boston community with a significant Irish-American, Cape Verdean-American, Haitian-American, and Vietnamese-American population), home of All Saints' Church Ashmont (one of the most architecturally significant Episcopalian Gothic Revival churches in New England — Ralph Adams Cram's famous neo-Gothic masterpiece in the Ashmont neighborhood), a diverse Boston community with a primarily working-class and lower-middle-class immigrant and African-American population, adjacent to Peabody Square (the commercial hub of Ashmont–Dorchester) and Mattapan in the southeast Boston corridor, and a community that is home to Dorchester's significant Irish-American and emerging immigrant communities — draws its municipal water supply via the MWRA. Water hardness in Ashmont measures 82.5 mg/L — classified as moderately soft.

Ashmont's moderate softness reflects the southeast Boston MWRA Quabbin–Wachusett supply's calcareous-poor character. The MWRA distributes Quabbin and Wachusett Reservoir supply (draining Precambrian Massachusetts granite — calcareous-poor) to southeast Boston, producing the moderately soft 82.5 mg/L.

With hardness at 82.5 mg/L, Ashmont residents enjoy moderately soft water. MWRA consistently delivers water meeting all Massachusetts DEP and EPA Safe Drinking Water Act requirements.