Oxford Circle Water Hardness & Quality Report (2026)

Oxford Circle, Pennsylvania, a neighborhood in northeast Philadelphia — a diverse northeast Philadelphia community historically a Jewish-American and Italian-American post-World War II neighborhood, now one of Philadelphia's most diverse communities with large Dominican-American, Vietnamese-American, and Cambodian-American populations, anchored by the Oxford Circle commercial district at Frankford Avenue — receives its municipal water supply from the Delaware River via the Philadelphia Water Department (PWD), distributed through the northeast Philadelphia water distribution grid. Water hardness in Oxford Circle measures 134.5 mg/L — classified as moderately hard.

Oxford Circle's moderate hardness reflects the northeast Philadelphia distribution infrastructure's age and characteristics. Oxford Circle developed primarily in the 1930s–1950s as a working-class northeast Philadelphia row-house neighborhood during the post-Depression and post-World War II era. The Philadelphia Water Department northeast district distribution in Oxford Circle–Mayfair includes cast-iron mains from the 1930s–1950s northeast Philly residential build-out. These moderately aged mains accumulate moderate mineral content from the treated Delaware River supply, producing the moderate 134.5 mg/L at Oxford Circle household taps.

At 134.5 mg/L, Oxford Circle residents encounter moderate scale accumulation. Faucet aerators and showerheads develop deposits after several months — monthly cleaning with citric acid solution is practical maintenance. Philadelphia Water Department consistently delivers water meeting all Pennsylvania DEP and EPA Safe Drinking Water Act requirements.