Poquoson Water Hardness & Quality Report (2026)

Newport News Waterworks provides drinking water to Poquoson, Virginia, and other communities in the Lower Peninsula, including York County and parts of Hampton Roads. Their main water source is surface water drawn from Diascund Creek Reservoir, with additional supply coming from an intake on the Chickahominy River. The water undergoes a multi-step treatment process at regional facilities like the Diascund Creek Treatment Plant. This includes coagulation, ozone disinfection, filtration, pH adjustment, corrosion control, and chloramination before it's distributed to over 400,000 residents through a vast network of pipelines.

The watershed primarily lies within the Chickahominy River basin in the Virginia Coastal Plain. It originates in the Piedmont region, flowing over crystalline rocks before reaching the fall line and entering sedimentary layers composed of sand, clay, and some calcareous shells. Unlike regions with extensive limestone aquifers, this supply relies on lowland reservoirs situated over organic-rich sediments. This geological makeup contributes to a moderately mineralized character derived from natural ions, avoiding the extreme hardness often found in limestone-dominated areas. The water's mineral content is balanced, influenced by surface runoff across easily eroded formations.

This moderately hard water can lead to some scale buildup in appliances such as water heaters, dishwashers, and washing machines over time. This buildup can reduce their efficiency and shorten their lifespan if not managed. Homeowners can mitigate these deposits through regular descaling with vinegar, annual flushing of water heaters, and the use of low-flow fixtures. While not strictly required, installing a water softener is a good idea for households experiencing issues like soap scum, spotting on glassware, or dry skin, as it can improve cleaning effectiveness and appliance performance.