What To Do When a Drain Backs Up at Night

Drains do not choose convenient times. They fail under load, and the heaviest load in most houses is the evening — dinner cooked, dishwasher on, laundry running, everyone showering.

So here you are. Here is what is actually worth doing.

First: stop the water

Nothing else matters as much as this.

Stop using every drain in the house. Dishwasher off. Washing machine off. No showers, no baths, no running taps. If somebody else is home, tell them, because the most common way a manageable backup turns into a flooded basement is one person running the washing machine while another deals with the mess.

Everything you send down has nowhere to go. It comes back out, and it comes out at the lowest opening in the house.

If a toilet is overflowing, close the valve behind it — the small tap where the supply pipe meets the wall, turned clockwise.

Second: protect what you can

Give yourself twenty minutes with the things worth saving.

• Lift boxes, storage and anything cardboard off a basement floor
• Move anything electrical away from where the water is heading
• Get towels or old sheets down as a barrier if the water is moving toward a doorway
• If the water is anywhere near an outlet, a panel or an appliance, do not stand in it — kill that circuit at the breaker first

Take photographs before you clean anything up. If this ends up being an insurance conversation, that is the evidence, and it is much easier to take now than to reconstruct later.

Third: work out what you are dealing with

It takes two minutes and it changes what happens next.

Check whether other fixtures are affected. Run the kitchen tap. Flush a different toilet on a different floor. Then:

• Only one fixture is affected. It is a local blockage — a trap or a branch. Annoying, contained, and it can usually wait until morning.
• Several fixtures are affected, or water appears at a different fixture from the one you used. It is the main line. Stop using water entirely and treat it as urgent.
• It is only happening because it is pouring outside, and everything is fine in dry weather. That may be the street sewer at capacity rather than your line — common in older combined sewer systems. Worth noting, because it points at a different solution.

What not to do

Do not pour chemical drain cleaner into a backed-up line. On a main line it sits in standing water, diluted, doing nothing, and then it is in the water somebody has to work in. On older cast iron it does real damage.

Do not keep plunging a main line backup. Plunging works on a fixture. Against a blockage tens of feet down the line it moves water around and pushes contaminated water further into the room.

Do not put a garden hose down the cleanout. Adding water to a line that cannot take away the water already in it is the opposite of helpful.

Do not open the cleanout cap without thinking about it. It is under pressure. Everything backed up behind it comes out at floor level, all at once.

When you call

We answer the phone 24 hours a day, 7 days a week, so a drain that fails at night does not have to wait for the morning.

Have these ready:

• Which fixtures are affected, and which are fine
• Whether water is coming up anywhere, and where
• Whether it happens only when you run something, or on its own
• Roughly how old the house is
• Whether there is a cleanout, and where
• Whether this has happened before, and when

That list is most of a diagnosis. It decides whether this is a fixture job or a main line job, and it is the difference between one visit and two.

If you decide to wait until morning

If it is a single blocked fixture and everything else drains, you can leave it. Shut the door and deal with it in the morning.

If it is the main line, the house is on a water budget until it is cleared. That means no laundry, no dishwasher, minimal toilet use, and short showers only if the shower is upstairs and nothing is coming up anywhere. If anything is coming up at floor level, no water at all.

If you would rather not wait, call (201) 315-6655 — the phone is answered at any hour.

Afterwards

Once it is cleared, ask why it happened — and if the answer is "this is the second time", get a camera down the line before it is the third. A repeat blockage is a symptom of something structural, and clearing it again is renting a solution rather than buying one.