Waxahachie Water Hardness & Quality Report (2026)

The City of Waxahachie Water Utilities Department serves Waxahachie in Ellis County, Texas, approximately 30 miles south of Dallas. The primary water source is Lake Waxahachie, a reservoir with a capacity of around 25,000 acre-feet impounded on Waxahachie Creek, a tributary of the Trinity River. Water is treated at the Lake Waxahachie Water Treatment Plant through conventional filtration, disinfection, and chemical adjustment. The utility supplements supply from the Carrizo-Wilcox Aquifer via wells during peak demand, serving a population of over 45,000 residents across the city and select surrounding areas.

Lake Waxahachie lies within the Trinity River Watershed, specifically the Chambers Creek sub-basin, draining approximately 100 square miles of agricultural and urban land across the Blackland Prairie ecoregion. The watershed picks up dissolved minerals from Cretaceous Trinity sands, limestones, and Woodbine formations, plus overlying Quaternary alluvium. The Carrizo-Wilcox Aquifer — a confined Eocene aquifer extending across East and Central Texas — contributes additional mineralization from prolonged contact with calcareous sands and shell fragments, resulting in a moderately mineralised supply with elevated calcium and magnesium content.

Moderately hard water leaves noticeable scale deposits on fixtures, glassware, and inside water heaters, dishwashers, washing machines, and coffee makers, lowering efficiency and shortening lifespan while reducing soap and shampoo lather. Annual descaling of heaters, vinegar soaks for faucets, and drain screens help mitigate buildup. A water softener is recommended for households. Water receives a C+ overall score from independent analysis, with nine contaminants above health guidelines but within legal limits; treatment includes coagulation, filtration, chlorination, and fluoride addition, with EPA lead and copper rules met via orthophosphate dosing.