Toilet and Tub Both Clogged? What It Means for Linden, NJ Homes

When a toilet and a bathtub clog together, the blockage is almost always in the main drain line they share, not in either fixture. Stop running water, do not keep flushing and do not pour chemicals down.

Check the lowest drain in the house, usually a basement floor drain. If water rises there too, the main line is blocked. Call a plumber, and if a storm is underway, also report it to the sewer authority.

Why Two Fixtures Clog at Once

Every fixture drains into a branch, and branches join into the main line that leaves the house. A toilet clog stays in the toilet. If the tub backs up when you flush, or the toilet gurgles when the tub drains, the two share a blocked pipe downstream.

The lowest fixtures show it first. Water follows gravity, so a basement toilet, shower or floor drain overflows before an upstairs one. Treat a backup in the lowest fixture as the main line announcing itself.

The Basement Floor Drain Test, Step by Step

This test tells you whether the problem is local or in the main line. It takes a few minutes and uses no tools.

1. Stop using water. No flushing, showers, dishwasher or laundry until you know more.
2. Go to the lowest drain. That is usually a basement floor drain or laundry tub drain.
3. Look and listen. Gurgling, a sewer smell or water seeping up means the main is slow or blocked.
4. Run one fixture. Run a single upstairs sink for a minute and watch the floor drain. If water appears, the main is blocked.
5. Note the pattern. Write down which fixtures were affected and when it started.
6. Call a plumber. Tell us what you saw at the floor drain.

If the floor drain stays dry and only the toilet and tub misbehave, the blockage may be in a shared bathroom branch, which is a smaller job.

What Usually Blocks a Main Line

Tree roots are a leading cause. They enter through joints in old clay or cast iron and grow into a mat that catches paper and grease. Grease, wipes, a collapsed pipe section, an offset joint or a belly in the line can also hold waste back.

A camera shows which one it is. We run a camera through the line, mark where the problem sits and then clear it with a cable or hydro jetting. If the pipe itself is broken, clearing is only a short-term fix and the next step is repair. Our sewer line cleaning work starts with the question of what is causing the blockage, not only how to open it.

Who Is Responsible for What

It helps to know who owns each part of the sewer path before you call. This is the general picture. Ask each office about your exact address.

Call During Storms, and Call Everyone Who Needs to Know

If the backup began in a heavy rainstorm, it may not be your pipe at all. Heavy rain can strain the sewer system beyond your pipe, and then more than one house on the block may feel it. In that case a plumber can clear your line and the problem returns the next day.

So make two calls. Tell us, and tell the sewer authority or City Hall, so they know the street is affected. If your neighbors have the same problem, say so. That points to the main in the street.

If the water coming up is dirty, keep children and pets away and wear gloves and boots if you must go in. Do not run fans or touch electrical equipment standing in water. If the private side of the line is damaged, our sewer line repair service covers it.

What Not to Do While You Wait

The urge to keep trying is strong. Resist it. Every flush and every shower pushes more water into a line that has nowhere to go, and the lowest fixture in the house takes the overflow.

Do not use a chemical opener on a main line. It will not reach a root mass far down the pipe, and it leaves a caustic liquid in standing water that someone has to work around. Do not rent an electric auger and push it hard into a line you cannot see. A cable can snag on a broken pipe and make a small break bigger.

Shut off the dishwasher and washing machine. If you can safely reach the main water valve and water is spreading from a fixture, close it. Otherwise leave the valve alone and call.

Insurance and Cleanup Steps Before We Arrive

Photograph and document first. This helps a claim and helps us.

• Photograph the water and affected items. Take wide and close photos with the date.
• Do not use the affected bathrooms. Use another bathroom if you have one.
• Move valuables up and off the floor. Only if it is safe to do so.
• Do not mix cleaners. Bleach and some cleaners release dangerous gases when combined.
• Check your policy. Many homeowner policies exclude sewer backup unless you added coverage. Ask your insurer.

We cannot promise what a policy covers. Keep receipts and the plumber invoice, and call your insurer early.

Call When Both Fixtures Are Down

Call our line as soon as you see the floor drain test fail or the toilet and tub both back up. Say what you saw and whether it is raining. We will explain the likely cause and schedule the next step, with a clear price before work starts. We also serve Roselle and Elizabeth.

Sources behind this answer

Where this guidance comes from: the Linden Roselle Sewerage Authority's public role, N.J.A.C. 5:23-2.7 and the state plumbing standard.