Landover Water Hardness & Quality Report (2026)

Landover, Maryland is served by WSSC Water (Washington Suburban Sanitary Commission), which provides drinking water to much of Prince George's and Montgomery Counties in the Washington metropolitan area. The utility draws from both surface water sources, primarily the Potomac River watershed, and groundwater from regional aquifers. Water is treated at large regional treatment plants — including the Potomac River and Patuxent River filtration plants — before being distributed through an extensive pipe network to communities including Landover.

The surface water supply originates in the Potomac River watershed, draining the Appalachian Piedmont and Valley and Ridge provinces. Groundwater supplies come from Coastal Plain aquifers of marine origin, composed of Cretaceous and younger sediments rich in carbonate minerals such as calcite and magnesium calcite. As water moves through these carbonate-rich formations it dissolves calcium and magnesium, producing a hard supply typical of areas underlain by marine-derived sediments, with aragonite also present in the aquifer material.

At a hard water level, Landover residents can expect visible scale buildup on showerheads, faucets, and inside water heaters, kettles, and dishwashers. Appliances that heat water are most affected, with scale reducing efficiency and shortening equipment life. Regular descaling of fixtures and periodic flushing of water heaters are recommended; installing a water softener is often beneficial to reduce scale and improve soap performance. WSSC Water publishes an annual Water Quality Report summarizing thousands of tests, including lead and copper monitoring under the Lead and Copper Rule, with PFAS and other emerging contaminants tracked where required.