Fix a Leak Week: 3 bathroom repairs to try today

Key takeaways

• Listen for running water and check for damp spots before choosing a repair.
• Match replacement parts to the old ones before installing them.
• Test each repair and compare water meter readings while nobody uses water.

Why a leak week is worth your time

Most household leaks are quiet. A faucet that drips a little, a showerhead that sprays unevenly, or a toilet that runs after a flush can go unnoticed for a long time because nobody is standing there listening to it. The water still goes down the drain, and the bill still goes up.

Leaks also tend to hide in plain sight. A bathroom fitting works well enough to use every day, so it is easy to assume it is fine.

That is the idea behind Fix a Leak Week, a campaign from the U.S. Environmental Protection Agency's WaterSense program.

The campaign also has a community side. As the page explains, "From family fun runs to leak detection contests to WaterSense demonstrations, Fix a Leak Week events happen from coast to coast and are all geared to teach you how to find and fix household leaks." You don't have to attend an event to benefit from the campaign, but events can be a good way to see the methods in person and ask questions.

This post covers the three bath hacks that the EPA page highlights. Each one is a simple repair or swap. Each one can be done with basic hand tools and a little patience. If any step makes you uneasy, stop and call a licensed plumber. A small repair is not worth a flooded bathroom.

Start with a quick leak check

Spend a few minutes looking for leaks before you buy any parts. You don't need special equipment for most of this. A flashlight, a dry towel, and a bit of quiet time are often enough.

Listen first. Stand in the bathroom with the fan off and the faucets closed, and listen for water running or trickling. Listen near the toilet, the shower, and the sink. A slow hiss or a soft drip is easy to miss when the house is busy, but it is much easier to hear when everything else is quiet.

Look next. Check under the bathroom sink, around the base of the toilet, and along the shower valve for water on the floor, damp cabinet wood, or stains. Water stains and soft spots in the floor or cabinet can point to a leak that has been going on for a while, and they deserve a closer look before you start a repair.

Check outdoors too. A hose bib, a sprinkler connection, or a spigot can drip for days without anyone noticing, especially when it is out of sight. Look at each one for drips, puddles, or wet ground nearby while the water is off inside and out.

Then check your water meter. Turn off every faucet, appliance, and outdoor hose in the house. Find the meter, note its reading, and check again after a while when nobody has used any water. If the meter still moves, water is getting out somewhere. This check covers the whole house, including leaks you cannot see or hear from the bathroom, so it is a good habit to repeat from time to time. For more detail, see how to check a water meter for leaks.

Once you know where the water is going, it may be one of the three hacks, or a part such as the shower valve, a sink supply line, or a faucet cartridge that needs a plumber. If the meter moves but the bathroom seems dry, keep looking in other rooms. Follow the guide to find a water leak location if you need help narrowing the search.

Tools and supplies to gather

Having the right things on hand makes each repair faster and less frustrating. Most of these items are inexpensive and useful for other jobs around the house.

• A towel or old cloth, to protect finishes and to catch small parts
• A bucket or shallow dish, for holding screws and washers
• An adjustable wrench, plus a pair of pliers with the jaws wrapped in tape
• A roll of plumber's teflon tape, also called thread seal tape
• Gloves, for stubborn parts and for cleaning out the toilet tank
• A flashlight, for reading part numbers and looking inside fittings
• Your phone, for taking a photo of each part before you remove it

Bring the old part to the store if you can. Matching the thread size, the shape, and the model keeps the replacement from leaking in the first place. If the store has a display of parts, compare the old and new pieces side by side before you pay. If you buy online, check the product photos and measurements against the old part before you order.

Bath hack 1: replace your showerhead

The first hack is the showerhead. The EPA page says, "This WaterSense Showerhead Bath Hack #1 video shows how easy it is to add teflon tape and replace your showerhead." You can find this hack on the Fix a Leak Week page.

Leaks at the showerhead often happen where the head screws onto the arm that comes out of the wall. The threads can loosen, or old tape can wear away and let water seep through. A new showerhead or a fresh wrap of tape can stop the drip.

Here is the general process:

1. Wrap a cloth around the old showerhead's connection, then turn it counterclockwise to remove it. Use the wrench only if the head will not turn by hand, and keep the cloth between the wrench and the finish.
2. Remove any old tape or residue from the threads on the shower arm. A cloth or a plastic scraper works well. Avoid metal tools that can scratch the arm.
3. Wrap teflon tape clockwise around the threads on the shower arm, as you look at the end of the arm. Keep the tape flat, overlap it slightly, and do not stretch it.
4. Screw the new head on by hand first. Snug it with the wrench, using the cloth to protect the finish. Do not crank it down. Overtightening can crack plastic fittings and damage the arm.
5. Turn the water on and check the joint. If it drips, tighten a little more. If it still leaks, take the head off, add a bit more tape, and try again.

If the threads on the arm look stripped or the arm wobbles, stop and call a plumber. A loose arm inside a wall is not a job for a quick fix.

Bath hack 2: replace your faucet aerator

The second hack is the faucet aerator. The EPA page says, "WaterSense Bath Hack #2 shows you How to Replace your Faucet Aerator." The Fix a Leak Week page covers this hack too.

An aerator is the small fitting at the tip of a faucet. It usually has a mesh screen and a few small washers inside a housing. Its job is to mix air into the water stream. Over time it can collect mineral deposits and grit from the pipes. That buildup can make the spray uneven, cause sputtering, or let water leak around the tip. Replacing the aerator is often the simplest fix for a faucet that looks fine but does not behave well.

Here is the general process:

1. Put a towel in the sink to protect it and to catch any parts that fall.
2. Unscrew the aerator counterclockwise by hand. If it will not turn, wrap it in a cloth and use pliers gently.
3. Lay the parts out in order as you remove them. Take a photo with your phone if that helps. The order matters when you put everything back together.
4. Rinse each part under running water and pick out any grit. Check the washers for cracks or flattening. Replace any worn part.
5. Reassemble in the same order, screw the aerator back onto the faucet by hand, and run the water. Look for leaks at the tip and check that the spray looks even.

If the aerator is cracked, or the faucet leaks from its base instead of the tip, the problem is different. A new aerator will not fix it, and you may need a new cartridge or valve. For that, a plumber is the safer choice.

Bath hack 3: replace your leaky toilet flapper

The third hack is the toilet flapper. The EPA page says, "WaterSense Bath Hack #3 shows how easy it is to Replace Your Leaky Toilet Flapper." The same Fix a Leak Week page covers this hack, so you can compare its guidance with the general steps below.

The flapper is the rubber seal at the bottom of the toilet tank. When you flush, it lifts to let water into the bowl. When it drops back into place, it seals the tank so the water stays put until the next flush. Over time the rubber can wear, warp, or collect debris. Then water slips past it. The tank keeps refilling, and water runs into the bowl on its own.

A running toilet is one of the easiest leaks to hear at night, and one of the easiest to fix. A new flapper is usually an inexpensive part. Here is the general process:

1. Turn off the water supply valve behind the toilet. It is usually a small valve near the floor. Turn it clockwise until it stops.
2. Flush to drain most of the tank. Use a sponge to remove the water left at the bottom.
3. Unhook the chain from the flush handle arm. Unclip the old flapper from its pegs or hinge, depending on your model. Match the new flapper to the old one before you install it.
4. Clip the new flapper into the same spot. Attach the chain so it has a little slack and does not pull the flapper open. A chain that is too tight keeps the flapper from seating. A chain that is too loose can get caught underneath it.
5. Turn the water back on and let the tank fill. Flush once and watch the flapper close. Listen for the tank to stop refilling.

If the tank still runs after the repair, check that the chain is not caught under the flapper and that the flapper sits flat on its seat.

Check your work after the repair

A repair is not finished when the parts are back in place. Run each tap, shower, or toilet a few times over the next few days, and pay attention to the places where a leak would show up: the joint on the showerhead, the tip of the faucet, and the base of the toilet tank. Look for new drips, puddles, or a change in the spray pattern.

Then check the water meter again, using the same method as before. If the meter has stopped moving while the house is quiet, your repair probably worked. If it still moves, go back to the leak check and look at the next fitting on the list. Write the result in your log so you can see what changed.

Water adds up in everyday terms

WaterSense also uses everyday comparisons to make large volumes easier to picture. One comparison on the page says, "That's the amount of water needed to take more than 180 showers!" Another says, "That's the amount of water it takes to wash 60 loads of dishes in your dishwasher." These comparisons are a reminder that water adds up over time, even when a leak seems small.

These comparisons are not estimates of your home's leak volume. For your own house, the most reliable number is the one on your water meter. Compare readings during a period when nobody uses water to check whether something is still leaking.

Keep a simple log

Pick a regular time to check your taps, shower, and toilet and keep a short list. Write down the date, the meter reading, what you checked, what you fixed, and what still needs attention. A written record makes it easy to notice a leak that comes back, and it helps if you call a plumber later and need to explain what you already tried.

A log does not need to be fancy. A note on your phone or a sheet taped inside a cabinet works fine. What matters is that you check the same places each time, so you can compare results.

Illustrative example: choose a repair after checking

Set aside an illustrative 10 minutes to listen and look around the bathroom. Suppose you find water at the showerhead connection but no damp spots under the sink. Photograph the connection and note it in your log before choosing parts. After the repair, check the joint again and record whether the drip has stopped. This example follows a visible leak; a moving meter with no visible source needs more investigation.

Find an event near you

The Fix a Leak Week page includes an event map. In the page's words, "See our Event map at the bottom of this page to find events near you and view past events!"

Even if you don't attend an event, reading about past ones can show you what kinds of leak checks other people run at home.

When to call a professional

Some leaks are beyond a weekend repair. Call a licensed plumber if any of these are true:

• The leak is inside a wall, in a ceiling, or under a floor, and you cannot reach the source.
• Water keeps appearing with no clear source, or the meter keeps moving after you have checked every tap, shower, and toilet.
• A part is seized, cracked, or has damaged threads that will not seal.
• You notice soft spots in the floor, damp smells, or signs of mold near a leak.

When you call, describe what you checked and what you found. Your log and the photos you took will help the plumber understand the problem quickly. Keep the water off until the repair is done, and ask the plumber to explain the fix so you know what to watch for next time.

Take the next step today

Choose the bathroom's most noticeable drip or running-water sound today, locate its source, and photograph what you find. Use that record to decide whether a repair above fits or whether you need a plumber.

Questions about bathroom leaks

Do these repairs cover every bathroom leak?

No, these repairs address the showerhead, faucet aerator, and toilet flapper. A leak elsewhere needs its own diagnosis before you choose parts.

What should I record after testing?

Record the meter reading and whether the original drip or running-water sound has stopped. Add what still needs attention so your next check starts with a clear record.