Today we were called out at High Point Medical in Cd’a for a clogged sewer line on a commercial building that multiple plumbing companies tried to unclog but were not successful. Upon diagnosis, we found the main backwater valve was clogged with frozen toilet paper and the valve was frozen shut. We tried to remove the valve with standard tools and were not successful, so we brought out our special proprietary equipment to thaw out 5 feet down enabling us to easily unclog the drain line and remove the previously frozen in backwater valve for inspection. We also found the valve needed replacing. We quickly replaced the valve and their plumbing was back to normal.