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The Home Depot

Why is My Bathtub Faucet Leaking

Pro Referral > Home Guides > Plumbing > Why is My Bathtub Faucet Leaking
Why is My Bathtub Faucet Leaking

Over time, it’s not unusual for faucets to develop annoying leaks. If you have a bathtub faucet with a leak issue, this problem could be more than a minor annoyance. It’s important to determine the reason for a bathtub leak to enable you to solve the problem.


Not only can the sound of dripping water distract and irritate, you might also object to the additional expense you find on your water bill when you have a leaky faucet.


Once you understand the potential waste from a leaky bathtub faucet, you may wish to determine the cause and resolve it quickly.

  1. For example, if your bathtub emits 10 drips each minute, this produces 14,400 drips per day – almost one gallon of water wasted each day.

    1.Water Waste

    Although a drip may seem insignificant, over time the volume of water that drips down the drain can become impressive. The U.S. Geological Survey website estimates that each drip of water contains ¼ milliliter of volume. Using this estimate, it would take 15,140 drips to equal one gallon of water. The USGS website also has a calculating tool to help you determine how much water your leaky bathtub might be wasting. For example, if your bathtub emits 10 drips each minute, this produces 14,400 drips per day – almost one gallon of water wasted each day. This translates to 347 gallons of water each year down the drain.

  2. 2.Worn Washers

    Many faucets contain a composition or rubber washer that closes onto a metal washer. This rubber washer will become hard and may even crack as it wears out. As the washer harden and cracks, it will stop creating a tight seal against the metal washer, which will cause leaks.


    A temporary solution may be to tighten the faucet, which will compress the rubber washer against the metal washer. This repair will only last for a short time, however, and you will probably notice the drips start again – often at a renewed pace. The final solution involves replacing the washers.

  3. 3.Water Pressure

    Faulty water pressure can also contribute to a leaky bathtub faucet. If water pressure is the culprit, you may not notice the drips occurring continuously. In fact, the drips may only happen during times of increased water demand when the water pressure is too high.


    If the water pressure is too high, it may prevent water from moving away from some areas. This causes an accumulation of water, which will then leak out wherever possible. The expulsion of excess water pressure will often be a bathroom faucet – either the bathtub or the sink.


    You can easily remedy this problem by reducing your water pressure slightly. If this does not fix the problem, you may need to call a professional plumber.

  5. 4.Other Plumbing Issues

    Although more unusual, a broken fitting or pipe could make a crack that could produce a leaky faucet. If you think this could be the cause of your leaky bathtub faucet, consult a professional to help with your faucet repair.


    With just a few hints and ideas, you should be able to diagnose a leaky bathtub faucet and resolve the issues in your bathroom.

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