St. Marys Water Hardness & Quality Report (2026)

St. Marys Water Company serves the city of St. Marys in Camden County, Georgia, with a population of approximately 17,662. The utility draws its drinking water exclusively from groundwater sources within the Floridan Aquifer System, extracted via wells tapping confined aquifer layers with no surface watershed involvement. Water undergoes disinfection treatment using chloramines before distribution to the service area. The utility office is located at 418 Osborne St., St. Marys, GA 31558; contact by phone at 912-510-4000 or 912-882-4415 for water quality inquiries.

The supply originates from the Floridan Aquifer beneath coastal Georgia — a vast karst system fed by regional recharge areas. Key formations include the soluble Suwannee Limestone (Oligocene) and underlying Avon Park Formation, both rich in carbonates. This limestone-dominated geology dissolves readily, yielding a very hard supply with elevated calcium and magnesium. Coastal proximity influences mixing that enhances mineral content, while karst features allow rapid infiltration concentrating dissolved ions from the limestone bedrock.

Very hard water in St. Marys promotes significant scale buildup in pipes, water heaters, dishwashers, washing machines, and faucets, where mineral deposits clog and corrode over time. Regular vinegar descaling, installing sediment filters, and flushing systems annually help mitigate effects. A water softener is strongly recommended to protect appliances and improve soap efficiency. The utility reports 3 contaminants exceeding EPA health guidelines, including potential Dieldrin and Chromium. Groundwater is inherently low in pathogens but monitored for toxins; treatment uses chloramines for disinfection.