Hammonton Water Hardness & Quality Report (2026)

Hammonton, New Jersey, in Atlantic County — an Atlantic County town adjacent to Egg Harbor City and Buena at the southern edge of the New Jersey Pine Barrens — receives its water from the Hammonton Water Division or New Jersey American Water, drawing from the Kirkwood-Cohansey Aquifer (Atlantic County) through the south New Jersey Pine Barrens distribution.

The soft 42 mg/L hardness and very low TDS of 65.5 mg/L reflect the south New Jersey Pine Barrens Kirkwood-Cohansey Aquifer's near-insoluble sandy character — one of the softest supplies in New Jersey, consistent with other Pine Barrens communities (Vineland: ~45 mg/L; Egg Harbor City: ~40 mg/L). The Kirkwood-Cohansey Aquifer at Atlantic County is developed in Miocene Kirkwood Formation (fine quartz sand — near-insoluble, primary supply), Miocene Cohansey Sand (quartz — near-insoluble), and Pleistocene Cape May Formation (sandy — insoluble). The overwhelmingly insoluble Miocene quartz sand produces the soft New Jersey Pine Barrens supply.

At 42 mg/L, Hammonton's water is soft — essentially no scale forms, soap lathers abundantly, and appliances maintain excellent efficiency. Annual descaling is sufficient. The PFAS level of 5.3 ppt warrants a certified drinking water filter — McGuire Air Force Base (Burlington County — AFFF) and the south New Jersey military PFAS corridor reach into the Atlantic County groundwater zone.