Why is my shower drain clogged?

Wondering what's going on in there?

How a shower drain works, in plain English

A shower drain is a short pipe with a dip in it. Water drops through the cover, through a U-shaped curve, and into the pipes your toilet and sinks share. Most clogs are hair and soap near the top. The rare bad ones are farther down.

Each number matches a step below.

The drain cover. Hair and soap catch right under it. This is where most clogs are.
The trap. A U-shaped curve that holds a little water to block sewer smells. Hair collects here too. A plunger or drain tool reaches it.
The branch pipe. It carries water from the shower to the main drain. Deeper clogs need a plumber's snake.
The main drain. The one big pipe every drain shares. When it clogs, several drains slow down, and water can come up in the shower.
The vent. A pipe up through the roof that lets air in, so water flows smoothly.

So a slow shower drain usually means one of these:

Hair under the cover, which you can pull out.
Hair and soap in the trap, which a plunger or drain tool clears.
A deeper clog, which needs a plumber's snake.
A main drain clog, if other drains are slow too.

That's why the first question asks whether it's just the shower.

Smell sewage in the house? See our guide to a house that smells like sewer.

Who to call

Rather not do it yourself? Call a plumber.

That's a fine choice. Maybe you're busy. Maybe you're selling the house and just want it done right. A plumber can clear a clog that won't budge and check the pipe below.

$100–$275Clear a shower drain

$100–$800Clear the main line

Most plumbers charge $45–$200 an hour, and some add a fee to come out. A camera look or water jetting costs more.

Find plumbers near you

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What to say

Calling a pro? Here's what to say.

A few lines to read when they pick up, and the questions to ask before anyone comes out.

Before you call

Rent? Call your landlord first.

Home warranty? Call them first.

4.5 stars or more, and a license number.

Say this

Hi. My shower drain is clogged. When's the soonest you can get here? And what's your fee for the visit? Does it go toward the repair?

Always ask

What's your fee to come out, and does it go toward the repair?
Do you charge by the job or by the hour?
Will you tell me the full price before you start any work?

Watch out if

They push a full replacement on the first visit for a small problem.
They won't give you a price before starting.
They add an emergency fee without telling you first.

Feeling pushed to decide on the spot? You can say no and hang up. You owe nothing for a phone call.

Know what's wrong before they come

Answer up to 5 quick questions. We'll give you the words a pro uses.

Answer the questions →

More of a list person?

Common clogs, causes, tests and costs

Find the row that sounds like your shower. The quick test is something you can check yourself in a few minutes.

What you notice	What it probably is	Quick test	Do it yourself	With a pro	Verdict
Water comes up in the shower when the toilet flushes; sewage smell	The main drain is backing up	Flush once and watch the shower drain	Pro job	$100–$800	CALLSee the answer: The main drain is backing up
Several drains slow; toilet gurgles	The main drain is slowing down	Run the sink and flush the toilet	Pro job	$100–$800	CALLSee the answer: The main drain is slowing down
Drain cleaner used; water still standing	Drain cleaner is sitting in the pipe	None. Leave it alone	Pro job	$100–$275	CALLSee the answer: Drain cleaner is sitting in the pipe
Slow drain; hair mat under the cover	Hair is caught under the cover	Lift the cover and look	Free	Not needed	FIXSee the answer: Hair is caught under the cover
Tub drains slowly; the stopper is stuck or barely opens	The tub stopper is stuck or not opening	Open the stopper all the way and look at the gap	Free	Not needed	FIXSee the answer: The tub stopper is stuck or not opening
Slow drain; nothing under the cover; plunger clears it	A clog in the curve of the pipe, cleared	Use a cup plunger	Free	Not needed	FIXSee the answer: A clog in the curve of the pipe, cleared
Plunger didn't clear it; drain tool pulls out hair	Hair is stuck deeper in the pipe	Push a plastic drain tool down and pull it out	Free	Not needed	FIXSee the answer: Hair is stuck deeper in the pipe
Plunger and drain tool didn't help	The clog is too deep for hand tools	None. Call a plumber	Pro job	$100–$275	CALLSee the answer: The clog is too deep for hand tools

2026 U.S. averages, rounded. Pro prices include parts and labor. Most plumbers charge $45–$200 an hour, and some add a fee to come out. Nights, weekends and big cities cost more. See all repair prices

Want proof it's just the shower?

The flush test

This one test tells you whether the problem is the shower or the main pipe for the whole house.

Make sure the shower floor is empty and you can see the drain.
Flush the toilet once, and run the bathroom sink for a minute.
Watch the shower drain the whole time.

Nothing happens in the shower: the clog is in the shower's own drain. Start with the cover.
Water bubbles up, or the toilet gurgles: it's the main drain. Stop using water and call a plumber.

Not sure it's safe to keep using it?

Stop using water right away if…

Water comes up in the shower or tub when you flush or run the washer.
It smells like sewage, or the water coming up is dirty.
Several drains are slow at the same time.
You used a drain cleaner and the water is still standing. Don't plunge it.

Stop flushing and running water, and call a plumber. Wear gloves if you have to clean up dirty water.

Got a big plumber's quote?

Is the price fair?

Most shower clogs cost nothing to clear yourself. When you need a plumber, HomeGuide lists $100–$275 for a tub or shower drain, and HomeAdvisor's average is $225. Ask yourself three things:

Is it just the shower? A single drain should be a simple snaking job. A main line clog runs about $100–$800.
Do they want a camera look? HomeGuide lists $125–$500. It makes sense when a main line keeps clogging, not for a first shower clog.
Water jetting? HomeGuide lists $300–$800 for a severe clog. Ask why a snake isn't enough.

Example: $175 to snake one slow shower drain is fair. $600 to jet a shower drain the first time it clogs is worth a second quote.

Ran into a word you don't know?

Drain words, explained

Tap through these before you go looking. The drawings show roughly what each part looks like.

Drain cover (strainer): The grate over a shower drain. Most lift out, twist off or have one screw.
Stopper: The plug in a tub drain that opens and closes. It pulls or unscrews out.
Overflow plate: The round plate under a tub's faucet. Block it with a wet rag when you plunge.
Trip lever: A lever on a tub's overflow plate. It moves a stopper hidden inside the overflow pipe.
Trap (P-trap): The U-shaped curve just below the drain. It holds a little water to keep sewer smells out.
Cup plunger: A plunger with a flat rubber cup, for sinks, tubs and showers.
Plastic drain tool: A thin plastic strip with little barbs that grab hair in the drain.
Hand snake (drain auger): A coiled metal cable you crank down a drain to break up or pull out a clog.
Main drain (sewer line): The one big pipe that carries water from every drain out of the house.
Cleanout: A capped pipe, outside or in the basement, where a plumber can reach the main drain.
Vent pipe: A pipe up through the roof that lets air into the drains so water flows smoothly.
Drain cleaner: A strong chemical sold to clear clogs. Read the label. Never plunge after using one if the drain is still clogged.
Hair catcher: A small screen over the drain that catches hair before it goes down.

Still have questions?

Questions people ask most

Why is my shower or bathtub drain clogged?

A shower or bathtub drain is almost always clogged by hair and soap, caught under the cover or stopper, or in the curve of the pipe below it. If several drains are slow, it's the main drain instead.

Is a clogged shower drain an emergency?

A clogged shower drain is usually not an emergency, but water coming up in the shower when you flush or run the washer is. That means the main drain is clogged, so stop using water and call a plumber today. A sewage smell, or several slow drains at once, is the same warning.

Why does my shower drain keep clogging, and how do I stop it?

A shower drain keeps clogging because hair and soap scum keep building up in the same spot. Mr. Rooter says bar soap leaves a sticky film that catches hair. A mesh screen or silicone hair catcher over the drain stops most hair before it gets in. Empty it often.

Why is my shower drain clogged when there's no hair?

A shower drain can clog without hair from soap scum, hard-water buildup, or a small object that fell in. Mr. Rooter says minerals in hard water narrow the pipe over time. If the shower backs up when other drains run, the main drain is probably partly blocked. Call a plumber.

Will a clogged shower drain clear on its own?

No, a clogged shower drain won't clear on its own. A slow drain may still empty in time, but Mr. Rooter says the buildup only gets worse until the drain is fully blocked. Pulling out the hair under the cover often fixes it in minutes.

How do I unclog a shower or tub drain with standing water?

To unclog a shower or tub drain with standing water, take the cover or stopper off and pull out any hair. Then use a cup plunger, with an inch or two of water over the drain and a wet rag stuffed in a tub's overflow. Then try a plastic drain tool. If you poured a drain cleaner in and the water's still standing, don't plunge. Call a plumber.

Why won't my bathtub drain?

A bathtub that won't drain usually has hair caught on its stopper or on the stopper parts inside the overflow pipe, or a stopper that only opens partway. Take the stopper out, or unscrew the overflow plate and pull its parts out, and clean off the hair (Angi). If the stopper is broken, put in a new one of the same type (Home Depot). If the toilet bubbles or water comes up when you flush, it's the main drain. Call a plumber.

Why does water come up in my shower when I flush the toilet?

Water comes up in the shower when you flush because the main drain that every fixture shares is clogged, so water backs up into the lowest drain. Stop using water and call a plumber today.

Should I use Drano on a shower drain?

It's better to pull the hair out by hand than to use Drano on a shower drain. If you do use it, read the label first and follow it exactly. Drano's label says never to use a plunger during or after use, and never to mix it with other cleaners.

Can a clogged shower drain cause a leak?

A clogged shower drain can lead to a leak if water overflows the tub or shower pan, Mr. Rooter says, and that can stain the ceiling below. A dried-out drain seal or missing grout and caulk can leak too, clog or not. A water stain on the ceiling under the shower is a reason to call a plumber.

Who do I call for a clogged shower drain?

Call a plumber or a drain cleaning company if pulling out hair and plunging don't clear it. Call a plumber today if water comes up in the shower when you flush, since that's the main drain. A plumber can also fix a leaking drain seal.

How much does a plumber charge to unclog a shower drain?

A plumber usually charges $100–$275 to unclog a tub or shower drain, HomeGuide says. HomeAdvisor's average is $225. A main line clog costs more, about $100–$800.

How we built this

The questions follow the order a plumber checks a slow shower or tub drain: whether other drains are slow, what's been poured in, then the cover or stopper, a plunger, and a drain tool. Each answer makes some causes more likely and others less likely.

Prices are 2026 national averages from published repair-cost guides, rounded. Your local prices will differ.

How we make money: some links go to parts stores that pay us a small commission, and some pro listings pay us when you call them. Verdicts come from the diagnosis, not from who pays more.