Bloomfield Water Hardness & Quality Report (2026)

The Metropolitan District Commission (MDC) provides Bloomfield's water supply, serving communities across Hartford County, Connecticut. The MDC sources surface water from two major reservoirs: the 30-billion-gallon Barkhamsted Reservoir, impounded by the Saville Dam near New Hartford, and the 9-billion-gallon Nepaug Reservoir, formed by the Phelps Brook and Nepaug Dams northwest of Collinsville. Water is treated at MDC facilities before distribution to Bloomfield's service area, covering approximately 89.7 square miles of watershed.

The reservoirs sit within the protected Farmington River basin, underlain by ancient Paleozoic metamorphic rocks—gneiss and schist—interspersed with igneous intrusions in the Berkshire Highlands and Central Lowland transition zone. These rocks, rich in calcium and magnesium-bearing minerals including calcite, dolomite, and feldspars, weather and dissolve as water flows through soils and fractured bedrock, imparting a hard character typical of New England hill country supplies. The watershed's intact forest cover and lack of industrial activity help maintain baseline purity before treatment.

Hard water in Bloomfield causes scale buildup in pipes, water heaters, dishwashers, and washing machines, reducing efficiency and lifespan—expect 20–30% higher energy use in affected appliances. White deposits on fixtures and soap scum are common, and laundry may feel stiff. Periodic vinegar descaling for showerheads and faucets is advisable; a water softener is recommended for households to prevent issues and extend equipment life. MDC's 2023 water quality reports show full compliance with EPA standards, including no detectable PFAS across 29 compounds tested per UCMR requirements.