Sulphur Water Hardness & Quality Report (2026)

The Sulphur City of Water System serves the city of Sulphur in Calcasieu Parish, Louisiana, providing drinking water to residents exclusively from groundwater wells tapping the Chicot Aquifer System, part of the broader Gulf Coast Aquifer System. The utility operates treatment facilities applying pre-oxidation with chlorine and disinfection via chlorine to meet EPA standards. The main office is located at 101 N. Huntington Street, Sulphur, LA 70663 (phone: 337-527-4500). No surface water components are used in this supply, and annual Consumer Confidence Reports are published.

Sulphur's water originates from the Chicot Aquifer within the broader Mississippi River Alluvial and Gulf Coast Aquifer systems, influenced by the Calcasieu River basin watershed. The local geology features Quaternary unconsolidated sediments — sands and clays from deltaic and marine deposits — overlying the Evangeline Aquifer. Calcareous materials and limestone-bearing coastal plain deposits dissolve into recharging groundwater, imparting a moderately mineralised character without the extreme dissolution typical of karst limestone regions.

At moderately hard levels, scale buildup can develop in pipes, water heaters, and dishwashers, reducing efficiency over time. Skin and hair may feel drier, and soap lathering is somewhat reduced. Periodic descaling of appliances and fixtures is recommended; a water softener is optional but advisable for households with hard water concerns. Water quality testing confirms compliance with all EPA Maximum Contaminant Level Goals, with no exceedances noted; treatment includes chlorine pre-oxidation and disinfection. Specific pH, lead, copper, and PFAS data are unavailable from retrieved sources; residents should consult the utility's annual Consumer Confidence Report for current details.