North Brunswick Water Hardness & Quality Report (2026)

North Brunswick, New Jersey, in Middlesex County — a diverse Central New Jersey township with a large South Asian Indian-American and Korean-American community, one of the most ethnically diverse communities in New Jersey (North Brunswick has among the highest concentration of Indian-Americans per capita of any municipality in the United States), home of numerous Middlesex County corporate campuses and a major suburban township in the Route 1 Corridor of Central New Jersey — draws its municipal water supply from the Potomac–Raritan–Magothy (PRM) aquifer via the North Brunswick Township Water Division and New Jersey American Water. Water hardness in North Brunswick measures 116 mg/L — classified as moderately hard.

North Brunswick's moderate hardness reflects the Middlesex County New Jersey Coastal Plain aquifer characteristics. The PRM Aquifer (Cretaceous Raritan Formation — calcareous-moderate sand with interbedded clay and the Magothy Formation — calcareous sand) provides the primary groundwater supply in the North Brunswick area. The Raritan Formation at the North Brunswick–Middlesex County zone includes calcareous glauconitic sands (moderately calcareous, marine influence in the Cretaceous Raritan Formation), contributing moderate dissolved calcium to the PRM groundwater. The North Brunswick Water Division well fields produce the moderate 116 mg/L.

At 116 mg/L, North Brunswick residents encounter moderate scale accumulation. Faucet aerators and showerheads develop deposits after several months — monthly cleaning with citric acid solution is practical maintenance. New Jersey American Water / North Brunswick Township Water Division consistently delivers water meeting all New Jersey DEP and EPA Safe Drinking Water Act requirements.