A recurring drain blockage deserves a closer look. Here is how water jetting works, why pipe condition matters, and what to ask before approving service.
What is hydro jetting?
Hydro jetting, also called water jetting, uses pressurized water delivered through a hose and specialized nozzle to clean inside a drain line. Depending on the equipment and the condition of the pipe, it can loosen and flush grease, soap residue, sludge and sediment. The appropriate pressure, nozzle and cleaning method depend on the line; more pressure is not automatically better. [1, 2]
Why assessment comes first
Before choosing a cleaning method, the contractor should assess access, the reported problem and what is known about the pipe. A camera inspection can help where access and visibility allow. A blocked or water-filled line can limit the view, so further inspection may be needed after the blockage is cleared. Ask for the findings and any available inspection recording. [2, 3]
When water jetting may help
Jetting can be useful when removable buildup is restricting an otherwise serviceable line. Recurring slow drainage is a reason to investigate, not proof that jetting is the right answer. The best choice may involve a cable machine, water jetting, camera inspection or a plumbing repair, depending on the obstruction and pipe condition. [1, 2, 3]
Cleaning cannot repair a damaged pipe
Water jetting does not straighten a sagging line, reconnect separated joints or repair a broken or collapsed pipe. Clearing roots also does not seal the opening where they entered. High-pressure cleaning can worsen an already damaged pipe, so repeated clearing should not replace a repair assessment when defects are present. [2, 3]
What to ask before approving service
Ask which access point will be used, what the written scope includes, whether camera inspection and documentation are included, and what happens if the contractor finds damage. A clear quote should explain what could change the price or require a separate repair. Keep the findings for future maintenance decisions.
A local sewer-safety precaution
An underground gas line can sometimes intersect a sewer line. PSE asks contractors to call 1-888-225-5773 before sewer-clearing work so its team can help check for this hazard. High-pressure drain cleaning should be handled by trained professionals using appropriate equipment and safeguards. [2, 4]
Request an exterior drain assessment in Edmonds
American Water Damage Restoration offers exterior drain cleaning, hydro jetting and sewer-camera services through an accessible cleanout outside the building. The approved scope depends on access and the condition found. Interior plumbing repair, pipe alteration and installation are outside this advertised service; when repair is needed, AWDR can help coordinate with an appropriately licensed plumbing contractor. [5]
Call (206) 771-7040 or request an exterior drain assessment. Serving Edmonds and Greater Seattle.
Request an exterior drain assessment
References checked November 8, 2026
- [1] RIDGID: how a water jetter cleans a line
- [2] RIDGID: KJ-5000 operator manual, drain assessment and safety
- [3] Seattle Public Utilities: side sewer repair methods and camera limitations
- [4] Puget Sound Energy: sewer-clearing safety for professionals
- [5] AWDR: exterior drain cleaning, jetting and sewer-camera service scope