Pride Plumbing was called out for a toilet in an upstairs women’s restroom not working properly. It was an ADA commercial toilet that would make a hammering noise whenever it was flushed. We replaced the toilet's Sloan flush valve and replaced a nearby hammer arrestor with a thermal expansion tank. We checked the unit for leaks and proper operation with no issues. Then we investigated a sewer odor in the front building stairwell but we did not detect any as there is no plumbing in that area to cause such an issue. Finally, we inserted a camera into the building's outside main sewer septic drain line to check its condition. Our camera revealed root damage approximately 100-feet from the building.