Chris Callahan has been in the Water and Wastewater Industry for over 23 years. He started his career with Ziebell Water Service in Chicago, IL. providing water and wastewater supplies to municipalities and contractors in the Chicago and Rockford Illinois area. Chris left Ziebell for an opportunity with Hydra-Stop providing equipment to perform Line Stops and insertion valves for both the water and wastewater utilities as well as contractors in the Midwest. After spending ten years with Hydra-Stop Chris accepted a position with an Indiana Contractor providing tapping, line stopping, insertion valves as well as manhole rehabilitation services to Midwest and Eastern state utilities and contractors. At this present time, Chris is the Central East Regional Marketing Manager for InfoSense the manufacturer of the SL-RAT (Sewer Line Rapid Assessment Tool) based out of Charlotte, NC. Providing acoustic technology for gravity sewer lines in the wastewater industry.