Gainesville Water Hardness & Quality Report (2026)

City of Gainesville Public Works operates the water utility serving Gainesville, TX in Cooke County, with a mailing address at 200 S Rusk St, Gainesville, TX 76240 (contact: 940-668-4500 or 940-668-4540). The system sources surface water treated via conventional methods including filtration and chlorine disinfection at facilities managed under Public Works at 104 W Hird. The Texas Commission on Environmental Quality rated the supply superior in the 2023 report. Billy Burgan (940-668-4577) handles source water assessments.

The supply originates from the Red River basin watershed, traversing Cretaceous limestone and sandstone formations prevalent in North Central Texas. Aquifers like the Trinity Aquifer interact with the surface sources, where dissolution from chalk and dolomite beds shapes a hard supply character. Limestone bedrock from the Comanche Series dominates, releasing alkaline earth metals as water flows through fractured karst terrain and clay-rich soils of the Grand Prairie region. The Fredericksburg and Washita formations from the Lower Cretaceous period contribute dissolved calcium and magnesium.

At this hard level, scale buildup accelerates in water heaters, dishwashers, faucets, and washing machines, reducing efficiency and lifespan. Soap scum forms readily, and spotting occurs on glassware and fixtures. Regular vinegar descaling, low-flow aerators, and magnetic conditioners help mitigate these effects; a water softener is recommended to maintain appliances below 7 gpg threshold for optimal performance. The 2023 CCR confirms compliance with EPA standards, with lithium detected at 0–15.6 µg/L (average 6.27 µg/L) and no violations noted.