Hydro jetting is drain and sewer cleaning with pressurized water: a pump drives water through a high-pressure hose to a nozzle that scours the inside of the pipe.
For a drain technician, the work is machine handling plus judgment — matching the machine and nozzle to the line, reading what the camera shows, and knowing when a cable should open the line first.
This guide covers the equipment, the nozzles, the safety side and the pay.
What is hydro jetting (a tech's definition)?
Hydro jetting cleans a drain or sewer line with water, not with a blade.
A pump feeds water down a high-pressure hose to a nozzle inside the pipe, and the nozzle turns that water into the spray that washes grease, sludge and scale off the pipe wall.
The contrast with cabling is the point: a cable cuts one path through a stoppage, while a jetter cleans the whole bore of the line.
In the field it is one tool inside the kit a drain technician carries — cable machines to open blocked lines, jetters to clean them, inspection cameras to see inside them, locators to trace them from the surface.
On a jetting call the camera bookends the work: a look before the jet shows what is actually in the line, and a look after confirms the wall is clean before the rig leaves.
One thing this guide will not give you is numbers.
Jetter pressure and flow ratings were not confirmed by the sources we checked, so the specs stay qualitative throughout.
The ratings that matter are the ones printed on your machine — the manufacturer's manual and your employer's procedures are the authority before you run one.
Jetters: trailer, cart, truck
Jetters sort into three classes by how they travel and how much water they carry.
Cart and portable units roll into buildings and tight spaces and suit branch lines and short laterals.
Trailer jetters are the contractor-fleet middle: towed behind a service truck, with more water and more hose than a cart.
Truck-mounted rigs carry the biggest tanks and the longest hose and are built for long runs — municipal mainlines and large-diameter lines.
Water is part of the logistics.
A jetter cleans only as long as the water lasts, so tank size and refills shape how a longer job runs — and the classes differ in setup and teardown as much as in capacity.
Whichever class your shop runs, the controls, valves and hose arrangements are equipment-specific, and the manual that travels with the machine is the document that tells you how it goes together.
The rest of the kit — cable machines, cameras, locators — is covered in the role guide.
What matters here is that the jetter is not a solo tool: the camera tells you what you are aiming at, and the cable may still be the tool that opens the line first.
Nozzles and when to use them
Nozzle choice is the core jetting skill.
The nozzle is where pressure becomes work: it shapes the water into the spray that breaks up the blockage and washes the pipe wall, and it controls how the hose travels down the line.
The families, roughly: penetrating nozzles punch through soft stoppages, flushing nozzles sweep loose debris and wash grease off the wall, and cutting heads take on hardened scale and root mass.
The camera decides.
A soft grease plug, a hardened scale ring and a root intrusion call for different nozzles — and the same line can hold more than one problem at once.
Pipe material and condition matter too: an older, thinner-walled line gets a more conservative setup than a new main.
That matching — nozzle to blockage, setup to pipe — is what separates a trained jetting tech from someone who just owns the machine.
Nozzle and hose care follows the manufacturer's service schedule, which is one more reason the manual rides in the truck rather than in a drawer.
Safety and PPE
Treat jetting safety as a structure with three owners.
The manufacturer owns the manual: operating limits, rated pressures, service and inspection schedules.
Your employer owns the written program: training, procedures, and what protective equipment is required on their jobs.
You own the discipline to run the machine inside both.
What industry bodies publish sits behind those two — and our research did not confirm specific water-jetting safety guidance documents, so this page will not restate any.
The same policy applies here as everywhere else on this page: no procedures.
The hazards in high-pressure water work are real and specific, but the correct handling steps depend on the machine and the job, and a generic list can be wrong for yours.
Learn the machine you will run from the people responsible for it.
No article replaces training
Jetting vs cabling decisions
The first tool decision on a stoppage call is cable or jetter.
A cable machine cuts through a blockage — fast to set up, and a quick way to restore flow through a single obstruction.
A jetter washes the line instead: slower to set up, but it cleans the buildup off the pipe wall, which is the material a line blocks again with if it only ever gets cut through.
| Cable machine | Hydro jetter | |
|---|---|---|
| What it does best | Cuts an opening through a blockage | Washes buildup off the pipe wall |
| Where it wins | Fast setup on a single-object clog | Cleans the full bore — grease, sludge and scale a cable slides past |
| Watch-out | A hole through grease is not a clean line — the stoppage can rebuild | Needs water, setup time, and a line condition that suits the nozzle |
What tips the call: what the camera shows — one object or wall buildup; whether the line is a repeat offender, because a line that blocks again and again is telling you the wall never got cleaned; the pipe's material and age; and what the customer is paying for, a one-time clear or a documented cleaning.
A call can use both tools: cable to open the line, jet to finish the cleaning, camera to confirm.
Neither tool replaces the camera — it is how you know which one the line needs, and whether the work worked.
Pay for jetting-qualified techs
Federal data has no jetting line.
O*NET counts Drain Technician among the reported job titles for Plumbers, Pipefitters, and Steamfitters (SOC 47-2152), and BLS publishes wages only for that combined occupation — no drain-only figure, and no figure for jetting-qualified techs specifically.
So no one can quote you a federal jetting premium, and any page that does is making it up.
The honest benchmark is the combined occupation's median: $30.67 an hour, or $63,800 a year, in May 2025 (OEWS, released May 15, 2026).
Read it as the pay band of the trade the job sits inside — plumbers, pipefitters and steamfitters together — not as a jetting wage.
What jetting skill is actually worth gets set shop by shop, in the pay structure your employer runs.
The practical signals are live postings and local shops: compare drain technician jobs that list jetting experience against those that don't, and see the drain technician salary page for the full national and state tables built on the same proxy.
Career information, not legal advice — pay is set by employers, safety procedures come from your employer and the equipment manufacturer, and licensing questions belong to your state board or, where licensing is local, your city or county.