Bathtub Won't Drain? Here’s What to Do Next

Summary Points

Hair and soap scum are the leading causes of a clogged bathtub drain.
DIY unclogging methods include plunging, baking soda and vinegar, and drain snakes.
Avoid chemical drain cleaners, as they can damage pipes over time.
Regular drain maintenance prevents blockages and costly plumbing repairs.
A drain stopper with a built-in hair catcher is the best long-term solution to keep the drain clear.

Standing in ankle-deep water after a shower is never a pleasant experience. A bathtub not draining properly can turn a simple daily routine into a frustrating ordeal. Whether the culprit is tangled hair, accumulated soap scum, or a more stubborn blockage, ignoring the issue can lead to foul odors, water damage, and expensive plumbing repairs.

Fortunately, most bathtub drain problems can be fixed with simple at-home solutions before calling a plumber.

This guide breaks down the most effective methods to unclog your tub drain and offers essential tips to prevent future blockages.

Common Reasons Why Your Bathtub Won't Drain

A bathtub not draining is a common household problem that can lead to standing water, foul odors, and potential plumbing damage. The most frequent causes include:

Hair & Soap Scum Buildup: Over time, hair and soap residue accumulate in the drain, restricting water flow.
Mineral Deposits: Hard water minerals form deposits that narrow drain openings.
Foreign Objects: Small objects like jewelry, shampoo caps, or cotton swabs can obstruct the drain.
Damaged or Clogged Pipes: Tree roots, corrosion, or pipe misalignment may cause a bathtub stopped up situation.

According to the EPA, an estimated 1 trillion gallons of water are wasted each year due to household leaks, including slow and clogged drains.

DIY Fixes for a Slow or Clogged Bathtub Drain

Below are the DIY methods to remove the bathtub drain.

1. Try a Plunger

A plunger is one of the most effective ways to clear a tub that is not draining due to minor clogs.

Fill the bathtub with a few inches of water to create suction.
Position the plunger over the drain and press firmly.
Pump up and down vigorously, then release to check if the water drains.

2. Use Baking Soda & Vinegar

A natural alternative to harsh chemicals, this method helps dissolve grease, soap scum, and small clogs.

Pour ½ cup of baking soda into the drain.
Follow with 1 cup of vinegar and let the mixture fizz for 10–15 minutes.
Flush with boiling water to clear out loosened debris.

3. Remove & Clean the Drain Stopper

Many bathtub drains have built-in stoppers that trap hair and debris.

Unscrew or lift the stopper to remove trapped gunk.
Use an old toothbrush to clean the stopper and surrounding area.
Reinsert the stopper and check if the bathtub drains properly.

How to Prevent Future Clogs

Preventative measures can save time, money, and frustration. Here are some effective solutions:

Use a Drain Cover or Hair Catcher: Installing a Drain Buddy Ultra Flo stops hair and debris before they cause blockages.
Flush the Drain Monthly: Pour hot water down the drain to clear minor buildup.
Brush Hair Before Showering: Removing loose hair reduces the risk of it entering the drain.
Dispose of Greasy or Soapy Residue Properly: Avoid pouring oils or heavy soap scum down the drain.

The average cost of hiring a plumber for drain cleaning is $300–$500, making prevention an easy way to save money.

Final Thoughts

To avoid clogged drains entirely, using a high-quality drain stopper with a built-in hair catcher, such as the Drain Buddy, is the best solution. Investing in preventive maintenance helps avoid costly repairs and ensures a hassle-free bathing experience