Safety

Can Hydro Jetting Damage Pipes?

Short answer: on sound pipe, with the right pressure and nozzle, hydro jetting is a standard cleaning method. On cracked, corroded, collapsed or very old fragile pipe it can make a problem worse or expose damage that buildup was hiding. That is why a camera run comes first.

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What lowers the risk

  • Camera inspection before jetting
  • Pressure and nozzle chosen for the pipe
  • Plumber stops if damage is seen
  • Footage kept so you can see what was found

Ask these questions before you hire anyone.

When jetting is generally appropriate

  • The pipe is intact and joints are sound.
  • The problem is grease, scale or roots.
  • The camera shows no collapse, large offset or open crack.
  • Common modern materials such as PVC or ABS in good condition.

Plumbing companies that publish their pressures describe secondary house lines at up to about 1,400 psi and large main lines at higher pressure (Bonney Plumbing). A district that cleans public sewers describes 1,200 to 1,500 psi when pushing the hose in and 700 to 900 psi when pulling back (Oro Loma Sanitary District). Pressure is a setting, not a fixed number, and the right one depends on the pipe.

Last updated October 2026.

When to be careful or choose another fix

  • Cracked or broken pipe.
  • Collapsed or badly offset sections.
  • Heavily corroded cast iron.
  • Older lines made of fragile materials, such as bituminous fiber pipe.
  • A line that has already had patch repairs.

In these cases a gentler method, a repair or a replacement may be the better choice. A camera decides it.

Old pipe types that need extra care

Many Los Angeles homes are older, and older house-to-sewer lines can be clay, cast iron or a bituminous fiber product often called Orangeburg.

  • Orangeburg: made of layers of wood pulp pressed with tar and used for house-to-sewer lines in the mid-20th century. A trade article says it can last up to about 50 years but tends to warp after roughly 30, and it warns that cleaning tools can damage flattened pipe (PHCP Pros).
  • Clay: strong but made in short sections. Joints can open and let roots in.
  • Cast iron: can corrode and scale on the inside, which jetting can remove, but a thin wall may break.

If you do not know what your lateral is made of, the camera tells you before anything else happens.

Why the camera comes first

A camera shows the pipe material, the joints, any cracks, sags (called bellies) and roots. It also shows how much of the problem is buildup and how much is damage. Without it, the plumber is working blind.

Buildup can hide a crack. If jetting removes it, the crack can show up as a leak or a new backup. A camera before and after separates old damage from new, and gives you a record of it. See sewer camera inspection.

How a careful plumber sets up the job

  1. Runs the camera and reviews the footage with you.
  2. Chooses a nozzle and starting pressure for the pipe size and material.
  3. Starts low and works up only as needed.
  4. Keeps the hose moving. Staying in one place can wear a spot in a weak pipe.
  5. Stops if the pipe shows damage or the footage changes.
  6. Runs the camera again to check the result.

Signs the pipe may be fragile

  • Repeated backups in an older house.
  • Cracks, offsets or flattened sections on a camera.
  • A dip in the pipe that holds water.
  • Scale or flaking inside a cast-iron line.
  • Roots that return soon after cleaning.

These are reasons to talk about repair or lining, not just cleaning. See signs of a clogged sewer line.

Questions to ask any plumber before jetting

  • Will you run a camera first and show me the footage?
  • What pressure and nozzle will you use on my pipe?
  • What will you do if you see damage?
  • Will I get a written price before work starts?
  • Do you provide a record of what you found?

A plumber who cannot answer these plainly is worth questioning. See who is responsible for the sewer line if you are unsure what part is yours.

Common questions

Can hydro jetting break a pipe?

It can if the pipe is already cracked, collapsed or very fragile, or if the pressure is too high. On sound pipe with the right settings it is a standard method.

What pressure is used?

It depends on the pipe. Published sources describe roughly 1,200 to 1,500 psi for pushing the hose in on home lines and lower when pulling back, with higher pressure for large mains.

Is jetting safe for old pipes?

It can be, but old pipe needs a camera check first. Fragile types such as Orangeburg may need a different approach.

What if the camera shows damage?

You will be shown the footage and options such as a gentler cleaning, a repair or a replacement.

Does jetting cause leaks?

It does not cause a leak in sound pipe. It can reveal an existing leak that buildup was covering.

Not sure your pipe is safe to jet?

Tell us the age of the house and what the drain is doing. We will connect you with Mike, who checks the pipe first.

Call (424) 421-1762