Park View Water Hardness & Quality Report (2026)

The D.C. Water and Sewer Authority (DC Water) provides water to Park View and all of Washington, D.C., serving approximately 700,000 residents across the District. Water is sourced primarily from surface water purchased from the U.S. Army Corps of Engineers, including the Potomac River and its tributaries, supplemented by groundwater under the influence of surface water. Treatment occurs at the Washington Aqueduct facilities, including the Dalecarlia and Potomac plants, which process raw water through coagulation, sedimentation, filtration, and disinfection before distribution to neighborhoods including Park View in Ward 1.

The Potomac River Watershed spans over 14,000 square miles across Maryland, Virginia, West Virginia, and D.C., draining from the Appalachian Mountains into the Chesapeake Bay. Geology includes folded and faulted Paleozoic sedimentary rocks such as the Devonian Keyser Formation limestones and Ordovician shales, with the supply supplemented by upstream reservoirs Jennings Randolph Lake and Savage River Reservoir. Natural carbonate leaching through limestone aquifers and riverbed interactions produces a moderately mineralised supply, with higher concentrations during low-flow summer periods when water resides longer in mineral-rich zones.

Moderately hard water leads to moderate scale buildup in dishwashers, washing machines, water heaters, kettles, and coffee makers, with spotting on glassware, reduced detergent efficiency, and white residue on fixtures especially noticeable in warmer months. Regular vinegar rinses, high-efficiency detergents, and a water softener are recommended for affected households to extend appliance life. DC Water maintains a score of 80/100 per recent reports, complying with lead and copper rules through corrosion control; pH is typically neutral to slightly alkaline with ongoing monitoring for disinfection byproducts and historical lead service lines.