Palm Coast Water Hardness & Quality Report (2026)

Palm Coast, Florida — a master-planned community in Flagler County on the northeast Florida Atlantic Coast — draws its municipal water supply from the Upper Floridan Aquifer via the City of Palm Coast Utility Department, pumping groundwater from the Eocene Ocala Limestone Group beneath Flagler County. Palm Coast is one of Florida's newer planned cities, developed primarily since the 1970s by ITT Community Development Corporation. Water hardness in Palm Coast measures 167.5 mg/L — classified as hard, substantially lower than Brevard County Floridan aquifer readings.

Palm Coast's moderate hardness (relative to central and south Florida Floridan readings) reflects the different character of the Upper Floridan Aquifer in northeast Florida at the Flagler County latitude. The Ocala Limestone in the northeast Florida zone — at the northern extent of the Floridan Aquifer's principal artesian zone — is less reactive than the dolomitic Avon Park Formation that dominates the central Florida aquifer. The northern Florida Floridan near St. Johns and Flagler Counties transitions to a section with less dolomite and more chalky limestone — the Suwannee Limestone and upper Ocala Group — that dissolves more moderately than the highly reactive Avon Park dolomite of the Melbourne or Orlando zones.

At 167.5 mg/L, Palm Coast residents face regular hard water challenges. Scale deposits form on faucet aerators, showerheads, and appliances within weeks — monthly descaling with citric acid solution is standard maintenance. Dishwashers require rinse-aid, and water heaters benefit from annual inspection. City of Palm Coast Utility Department consistently delivers water meeting all Florida DEP and EPA Safe Drinking Water Act requirements.