Rogers Water Hardness & Quality Report (2026)

Rogers Water Utilities serves Rogers in Benton County, Arkansas, and surrounding areas in Northwest Arkansas, purchasing all surface water from Beaver Water District (BWD). BWD treats raw water drawn from Beaver Lake, a large reservoir on the White River created by Beaver Dam in 1966. The John M. Huss Treatment Plant, operated by BWD near the dam, employs conventional treatment — pre-oxidation with chlorine, coagulation, sedimentation, filtration, and disinfection via chlorine and chlorine dioxide — supplying over 300,000 people across Rogers, Fayetteville, Springdale, and Bentonville.

The watershed encompasses the upper White River basin within the geologically distinct Ozark Plateau, featuring karst topography with Mississippian-age limestones — including the Boone and St. Joe formations — alongside chert-rich layers. Subsurface drainage through fractured carbonates feeds the lake without direct aquifer tapping. The limestone-dominated geology imparts a moderately mineralised character to the water, with natural calcium and magnesium from rock dissolution and low sodium, yielding total hardness of 87 mg/L as CaCO₃ and TDS of 128 mg/L.

As moderately hard water, Rogers' supply promotes moderate scale buildup in pipes, water heaters, and dishwashers, reducing efficiency over time. Boilers and faucets are particularly susceptible to limescale accumulation. Regular vinegar descaling, scale-inhibiting filters, or a water softener is recommended for households noticing reduced lathering or spotting on glassware. Recent BWD finished water data shows pH 8.35 and chlorine residual 1.47 mg/L, ensuring effective disinfection. The utility reports no EPA violations and good lead and copper compliance; 2 contaminants above health guidelines (including bromodichloromethane) have been detected in monitoring but no violations recorded.