Dunedin Water Hardness & Quality Report (2026)

The City of Dunedin, Florida, operates a municipal water utility serving the city and surrounding areas in Pinellas County. The utility's drinking water is sourced entirely from groundwater wells that tap into the Floridan aquifer system. The city maintains compliance with all federal and state drinking water regulations and publishes annual Consumer Confidence Reports detailing water quality results. Residents with concerns about water hardness can contact the utility's Water Quality line or obtain inexpensive home hardness test kits from local hardware stores.

Dunedin's water supply is drawn from the Floridan aquifer, a major groundwater system underlying much of Florida. The aquifer consists primarily of Tertiary-age limestone and dolomite formations that are naturally rich in dissolved minerals, particularly calcium and magnesium. This geological setting is responsible for the moderately soft character of Dunedin's tap water at 90 mg/L. The limestone bedrock through which groundwater flows dissolves these minerals — a process affecting most Florida water supplies — though hardness levels here are lower than in many other Florida cities.

At the moderately soft level, residents may notice some scale buildup on fixtures, reduced soap effectiveness, and spotting on dishes and glassware over time. Coffee makers and kettles are typically the first appliances to show mineral deposits. A point-of-use water softener for laundry or dishwashing, or a whole-home ion-exchange system, can provide noticeable benefits for sensitive households. The city's water quality reports confirm no history of lead in the drinking water; however, third-party analysis indicates 12 contaminants above EPA maximum contaminant level goals (MCLGs), and certified water filters are recommended by some water quality advocates for additional protection.