The customer has three bathrooms on the ground floor and one bathroom on the upstairs floor. Three out of the four bathrooms are affected and currently clogged and the one far back bathroom in the warehouse is unaffected. I pulled the hall bathroom toilet closest to the warehouse entrance and it was full of water and currently backed up. I ran a camera and ran it 100 feet from that point and ran it into what appeared to be a septic tank. I then walked around the building to try and locate any manholes, I did find a 6 inch PVC pipe on the exterior left side of the building. That was also full of sewage and ran it about 40 feet before it would reach that same end destination. I could vaguely see a septic tank on my camera screen. In the back hall bathroom (addition prior to the renters moving in, I did long amounts of testing to ensure full functionality before leaving.) the customer did show me where he had a sewer bill which I’m under the impression three out of the four bathrooms are