Montgomery Village Water Hardness & Quality Report (2026)

Montgomery Village, Maryland, is served by the Washington Suburban Sanitary Commission (WSSC Water), supplying water to Montgomery and Prince George's Counties. Primary sources include the Potomac River, with intake at the Potomac Water Filtration Plant in Bethesda, MD, and the Patuxent River at the Patuxent Water Filtration Plant in Laurel, MD. Groundwater from wells in the Potomac Aquifer supplements supply during peak demand. WSSC treats over 200 million gallons daily using coagulation, sedimentation, filtration, and disinfection for a population exceeding 1.8 million.

The Potomac River watershed spans the Appalachian Piedmont, draining through Potomac Group rocks — shales, siltstones, and thin limestones from the Devonian–Mississippian period — that impart a moderately mineralized character to the surface water. The Patuxent watershed features similar Coastal Plain sediments overlying crystalline basement, with minor limestone contributing ions. The Potomac Aquifer in unconsolidated sands and gravels recharges from river infiltration, yielding water with natural mineral content. This mixed geology results in a generally soft to moderately mineralized supply.

As a soft water area, Montgomery Village experiences minimal scale buildup in pipes, water heaters, and appliances, reducing maintenance needs compared to harder regions. Soap lathers easily and spotting on fixtures is rare, though very soft water may increase minor corrosion risks in older plumbing. No water softener is needed or recommended; focus instead on regular filter changes and pipe inspections. WSSC Water maintains pH between 7.2–8.0 for corrosion control, fully compliant with EPA Lead and Copper Rule. No PFAS exceedances have been reported; treatment includes chloramination, GAC for organics, and fluoride addition. Annual testing exceeds 500,000 analyses.