According to our records, this business is located at 1607 S Smith Rd. in Urbana (in Champaign County), Illinois 61802, the location GPS coordinates are: 40.0991437 (latitude), -88.1763234 (longitude). 21st Century Service Radon Testing is categorized under Air Pollution Measuring Services (SIC code 8734). Current estimates show that the unit has a sales volume of $510,000 and staff of approximately 5 people. You can contact the company by phone at (217) 239-7044.