Sidney Water Hardness & Quality Report (2026)

Sidney City Public Water Supply (PWS) serves 20,614 residents across Sidney, Ohio in Shelby County. The utility draws from surface water sources and operates treatment facilities that include filtration, softening, and disinfection using chlorine and chlorine dioxide. The water treatment supervisor and utility director manage operations from the main office at 201 W Poplar, Sidney, OH 45365 (phone: 937-498-8152). According to 2026 water quality data, Sidney City PWS has reported 3 contaminants above EPA health-based guidelines (MCLGs); residents should consult the annual Consumer Confidence Report (CCR) for detailed compliance data, lead and copper testing results, and specific contaminant levels.

The Sidney water supply originates from surface water in a region underlain by Ordovician and Silurian limestone and dolomite aquifers. These carbonate rock formations are highly soluble, and as precipitation infiltrates through soil and bedrock, it dissolves significant quantities of calcium and magnesium minerals. The local watershed geology is the primary driver of the supply's very hard character, a condition typical of much of western Ohio where limestone-dominated geology is prevalent.

Very hard water at Sidney's levels causes substantial impacts on household systems. Mineral buildup accelerates wear on water heaters, dishwashers, washing machines, and plumbing fixtures. Soap and detergent efficiency drops markedly, requiring higher doses for cleaning, and scale accumulates in pipes and appliances. A whole-home salt-based water softener combined with point-of-use reverse osmosis treatment for drinking water is strongly recommended to protect appliances, reduce maintenance costs, and improve water quality for consumption and cleaning.