The duration of a high pressure jetting job varies depending on factors like the severity of the blockage, the length of the pipe, and the accessibility of the drainage system. In many residential cases, clearing a routine clog might take as little as 30 minutes once the equipment is set up. More complex issues, such as extensive root intrusion or severely compacted debris, may require additional passes with different nozzles or follow-up inspections to ensure thorough removal. Commercial or industrial drains, which can be larger and more heavily soiled, might take longer due to the greater volume of debris. Before starting, a professional drainage specialist will usually conduct a quick assessment—possibly using CCTV cameras—to estimate the complexity of the job. They can then advise you on the expected timeframe. Overall, high pressure jetting is still considered one of the quickest and most effective methods for restoring normal flow.