DeRidder Water Hardness & Quality Report (2026)

The City of DeRidder Water System provides drinking water to about 14,400 residents in DeRidder, Louisiana. This utility draws its entire water supply from underground aquifers, which are then treated at local facilities using chlorine for disinfection. You can reach the City of DeRidder Water System by phone at 337-462-8900 or by mail at 200 South Jefferson Street, DeRidder, LA 70634. The system received an 'A' grade from the Louisiana Department of Health and Hospitals for 2025, and its water meets all EPA Maximum Contaminant Level Goals. Because it's a groundwater source, there's no surface watershed; instead, water replenishes through rain that soaks into the Piney Woods region of western Louisiana.

The water is drawn from the Catahoula and Carrizo-Wilcox aquifers, which consist of Tertiary sands and clays. Interbedded limestones from Miocene and Eocene formations also contribute to the geology. This landscape, formed by ancient deltaic deposition, yields water that is moderately mineralized. The interaction with carbonate-rich sediments influences the water's overall chemistry, resulting in neither extreme softness nor hardness. The Gulf Coastal Plain geology is responsible for this characteristic mineral profile.

Homeowners might notice some scale buildup in appliances like water heaters, dishwashers, and coffee makers over time, although it's less severe than with very hard water. Performing regular maintenance, such as descaling fixtures annually or using vinegar rinses, can help prevent these issues. While a water softener isn't strictly necessary, some households might prefer one to reduce water spots on glassware or to potentially extend appliance lifespan. The City of DeRidder Water System confirms all contaminants are within safe levels according to health-based guidelines, with zero contaminants found above limits in 2026 testing.