Watering restrictions are regulated by the municipality where the property is located.
The Code Compliance division of Planning & Development regulates properties located in the city of Clearwater, and properties located in the county (unincorporated Pinellas County, or enclaves) are regulated by the ordinances of that jurisdiction, regardless of the source from where the water comes.
If you have questions, call the city's Code Compliance team at (727) 562-4720.