Fort Hunt Water Hardness & Quality Report (2026)

Fort Hunt, Virginia, gets its drinking water from Fairfax Water, a utility that serves much of Northern Virginia. The water comes primarily from two surface sources: the Potomac River, accessed through the Potomac River intake, and the Occoquan Reservoir. These supplies are treated at two major facilities — the Corbalis Treatment Plant for Potomac River water and the Griffith Treatment Plant for Occoquan Reservoir water. Fairfax Water then blends these sources to meet the needs of more than 1.8 million customers across Fairfax, Prince William, and Loudoun counties, distributing it through an extensive network of pipes.

The Potomac River watershed, which spans 14,670 square miles across multiple states and the District of Columbia, flows over folded sedimentary rocks. Geologic formations here, such as the Devonian-age Keyser and Helderberg limestones and Silurian Tonoloway limestone, weather and release minerals into the water. Meanwhile, the Occoquan Reservoir is situated in the Piedmont region, with underlying metamorphic gneiss and schist, covered by Quaternary alluvium. This varied geology, particularly the presence of limestone, leads to the dissolution of minerals like calcium and magnesium, resulting in a moderately mineralized water supply.

This moderately hard water can lead to scale buildup in appliances like kettles, dishwashers, and water heaters, which can reduce their efficiency and shorten their lifespan. You might also notice white deposits on fixtures and glassware, and soap may not lather as easily. Regularly descaling appliances with vinegar can help. For those experiencing frequent residue or issues with their appliances, installing a water softener is often recommended to extend equipment life and improve cleaning effectiveness. Fairfax Water works to control corrosion by maintaining a pH between 7.5 and 8.5, and their latest reports show excellent compliance with EPA standards for contaminants like lead, copper, PFAS, THMs, and radon.