Potable water, by definition is water used for drinking or food preparation. For irrigation purposes it also refers to water from wells, ponds or lakes. Below is the watering days chart for Pinellas County Potable Water for unincorporated residents. This means the residents that receive water bill from Pinellas County Utilities customers only. Pinellas residents that live in Belleair Clearwater, Dunedin, Gulfport, Oldsmar, Pinellas Park, Safety Harbor, South Pasadena, St. Petersburg, Tarpon Springs may receive water from that city.