In this video we hydro scrub out from an outside clean out at a job training campus with 4000 psi of water to blow out stool and sludge blockage approx. 10 feet into the drain pipe. After we open the line we ran the camera down the pipe to find a belly of water where the pvc pipe transfers to cast iron pipe. We tested the sewer pipe from several different bathrooms inside the building, the sewer is open and flowing. The mop sink that we were running was drain slow so we ran our 5/16" through the trap to find a dish scrubber that had washed down the drain.
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