Central Water Hardness & Quality Report (2026)

Central Water System serves the city of Central in East Baton Rouge Parish, Louisiana, providing drinking water to approximately 30,000 residents across a 15-square-mile area. The utility sources its supply from multiple groundwater wells tapping the Carrizo-Wilcox and Evangeline aquifers. Water is treated at the Central Water Treatment Plant, where it undergoes chlorination, fluoridation, and filtration to meet state and federal standards. The system is regulated by the Louisiana Department of Environmental Quality (LDEQ) and complies with EPA Safe Drinking Water Act requirements.

Groundwater flows through unconsolidated Tertiary sands and gravels of the Gulf Coast Aquifer System, with interbedded calcareous sediments from the Miocene Fleming Formation and Oligocene strata within the Mississippi River Alluvial Plain. These sands are interbedded with calcareous clays and shell fragments, dissolving calcium carbonate and magnesium from limestone and marl formations. This mineral dissolution imparts a moderately mineralised character typical of Louisiana's coastal plain sedimentary aquifers, prone to elevated calcium and magnesium.

Moderately hard water produces moderate scale buildup in pipes, water heaters, and dishwashers, reducing efficiency and lifespan. Soap lathering decreases, leaving spots on glassware and fixtures; washing machines and coffee makers are most affected. Regular vinegar descaling helps mitigate buildup, and a water softener is recommended for households noticing these effects. The system holds a superior rating from LDEQ; pH runs approximately 7.2–7.8, with no PFAS detections above EPA limits and low post-treatment iron and manganese. Treatment includes aeration, sedimentation, multimedia filtration, and chlorine disinfection; annual Consumer Confidence Reports confirm compliance.