Warm Mineral Springs reopened to the public after closing last summer after the concessions contractor's lease expired.
Sarasota County and the city of North Port agreed to open the springs for bathing and swimming.
The Sarasota Herald-Tribune reports that the county hopes to develop the springs as a resort to attract more tourists, taxes and jobs. However, some want to preserve the springs as an archaeological site and public park.
National and State Park Concessions Inc. will run it as a swimming facility until September.