Jupiter Water Hardness & Quality Report (2026)

Jupiter Utilities Department serves the Town of Jupiter in Palm Beach County, Florida, providing drinking water to approximately 65,000 residents across 20 square miles. The primary water source is groundwater from the surficial aquifer and Upper Floridan aquifer, extracted via 25 production wells. Water is treated at the W.L. Jenkins Water Treatment Plant, which processes up to 12 million gallons per day using aeration, filtration, disinfection with chloramines, and corrosion control. The utility also purchases treated water from the City of West Palm Beach during peak demand.

The supply originates within the Loxahatchee River watershed (HUC 03090206), encompassing Jupiter Inlet and surrounding coastal areas in Palm Beach County. The geology features the karstic Floridan aquifer system, composed of Oligo-Miocene limestone and dolomite formations that readily dissolve, imparting elevated calcium and magnesium to the groundwater. Local recharge from rainfall through sandy soils and limestone bedrock further shapes this hard supply, with no major surface water influences diluting the mineral content.

At this hard supply level, scale buildup is a primary concern, particularly affecting water heaters, dishwashers, washing machines, and plumbing fixtures, leading to reduced efficiency, higher energy costs, and premature appliance failure. Dry skin, soap scum, and spotting on glassware are common household impacts. Regular deliming of heaters annually, scale-inhibiting filters, and flushing pipes is advised. A water softener is recommended to mitigate these effects and extend appliance life. Jupiter's water consistently meets or exceeds EPA standards; the utility reports compliance with lead and copper rules, no PFAS detections above limits in recent monitoring, and pH maintained at 7.5–8.5. Treatment includes chloramination, granular activated carbon for organics, and fluoride addition at 0.7 mg/L.