Radon Testing Tampa Clearwater Florida – Radon Authority Radon Testing & Mitigation 5668 Fishhawk Crossing Blvd #303, Lithia, FL 33547 (813) 737-7537 Radon Testing Tampa Clearwater Florida – Radon Authority Radon Testing & Mitigation 5668 Fishhawk Crossing Blvd #303, Lithia, FL 33547 (813) 737-7537