High pressure water jetting is the workhorse of modern drain clearing, and it is the method we reach for most often after 25 years and more than 20,000 cleared drains. But no tool is right for every job, and we think homeowners make better decisions when they understand both sides of the ledger honestly. So here it is, the genuine case for water jetting, the genuine limitations, and how we decide when it is the right call for your drain.
How it works in one paragraph
A jetting unit pumps water at very high pressure through a hose to a specialised nozzle fed into the drain. The nozzle fires jets forward to cut into the blockage and backward to scour the pipe walls and propel the hose deeper into the line. The rear facing jets also flush every fragment of the blockage back toward the operator and out of the system, rather than leaving debris to resettle further down. Different nozzles suit different enemies, penetrating heads for compacted grease, root cutting heads for tree root intrusion, and flushing heads for silt and sand.
The case for jetting
The first advantage is completeness. A mechanical snake or electric eel drills a hole through a blockage, restoring some flow while leaving the surrounding build up on the walls, which is why snaked drains so often block again within months. Jetting cleans the full circumference of the pipe along its entire length, returning it to something close to original capacity, which is the difference between relieving a symptom and resetting the system. The second advantage is reach and versatility. Jetting works around multiple bends, travels long distances from a single access point and handles everything from bathroom grease to sand ingress to root masses with a nozzle change. The third is that it uses nothing but water. No chemicals enter your pipes or the environment, nothing corrodes, and there is no residue for the next person to encounter. And finally it is fast, with most residential blockages cleared in well under an hour once we have access.
The honest limitations
Jetting clears pipes, it does not repair them. If your blockage exists because a pipe has cracked, sagged into a low spot or been displaced at a joint, jetting will clear the symptom and the fault will refill on its own schedule. This is why we pair jetting with CCTV inspection, because clearing a line without looking at it is how recurring blockage subscriptions are born. The second limitation is that jetting demands judgement around fragile pipework. Severely corroded old galvanised lines or badly cracked clay can be damaged by full pressure in careless hands, which is why pressure selection and an experienced operator matter, and why the camera goes down first when the pipe’s condition is in doubt. Third, jetting requires proper equipment, and there is a real difference between a plumber’s small jetter and a dedicated drainage unit. Underpowered jetting flatters itself against soft blockages and fails against the hard ones. Finally, for a simple hair clog sitting at the top of a bath waste, jetting is overkill, and we will tell you so, because a two minute mechanical fix should cost a two minute price.
Jetting versus the alternatives
Against the electric eel, jetting wins on thoroughness and wall cleaning, while the eel retains a place for certain hard obstructions and delicate old pipes. Against chemical cleaners there is no contest, chemicals damage pipes, endanger whoever works on the drain next and fail against serious blockages. Against excavation, jetting plus relining has transformed the economics entirely, since most damaged lines can now be cleared, then sealed from the inside, without a shovel touching the garden. The genuinely modern approach is not one tool but a sequence, camera to diagnose, jet to clear, camera to verify, and reline or repair only where the footage proves it necessary.
How we decide, and what it means for you
When we attend a blocked drain, the choice of method follows the evidence. Recurring blockages, multiple affected fixtures, external gully overflows and any history of roots all point to jetting with inspection, while a single slow fixture with an obvious local cause gets the simple fix it deserves. That judgement, knowing which tool and when, is most of what you are actually paying for in a drain specialist. If your drain keeps blocking, or a blockage has defeated the usual household methods, call Drains Plus. We carry the jetting equipment, the cameras and the experience to clear it properly, and if we cannot clear your drain, it is free.
A question we hear often is whether jetting is safe for older Perth homes at all, and the answer is yes, with the right operator. Jetting pressure is adjustable across a wide range, and an experienced technician reads the pipe material, age and camera footage before selecting it, treating a 1960s earthenware line very differently from modern PVC. The stories of jetting damaging pipes almost always trace back to full pressure applied blind into an unknown line, which is precisely the practice the camera first approach exists to prevent. The tool is only ever as safe or as dangerous as the judgement holding it.
