Sewer jetting is a way of cleaning a sewer or drain pipe by using a high or low powered water pressure washing system which travels down the sewer pipe and removes clogs such as grease, sludge, and sand buildup. It leaves the sewer pipe interior with a clean finish and is typically used for maintenance of restaurants and drains that receive mostly grease or sand buildup. Old sewer lines containing sludge build up can often be revived with a jetting service.