Severna Park Water Hardness & Quality Report (2026)

Severna Park, Maryland, an unincorporated community in Anne Arundel County — a major Anne Arundel County suburban community on the Severn River (the Severn River empties into the Chesapeake Bay at Annapolis — Severna Park is on the upper Severn River), an affluent and primarily residential community in the Baltimore–Annapolis corridor, home of a strong sailing and boating culture on the Severn River, and a diverse Anne Arundel County community with a significant military and federal government professional population (between Baltimore, Annapolis, NSA Fort Meade, and the Naval Academy) — draws its municipal water supply via the WSSC Water (Washington Suburban Sanitary Commission). Water hardness in Severna Park measures 145 mg/L — classified as moderately hard.

Severna Park's moderate hardness reflects the WSSC supply characteristics and the Maryland Piedmont's calcareous geology. The WSSC Rocky Gorge and Triadelphia Reservoirs on the Patuxent River drain the Maryland Piedmont (Precambrian calcareous-moderate gneiss) and the Cambrian Cockeysville Marble (calcareous marble formation of Baltimore–Howard Counties). WSSC distributes to the Severna Park central Anne Arundel zone, producing the moderate 145 mg/L.

At 145 mg/L, Severna Park residents encounter moderate scale accumulation. Monthly cleaning with citric acid solution is recommended. WSSC Water consistently delivers water meeting all Maryland MDE and EPA Safe Drinking Water Act requirements.