How to Fix a Leaky Showerhead

A leaky showerhead is one of the most common bathroom annoyances, and one of the easiest to fix. The drip that keeps you awake at night, the steady trickle that wastes water all day, and the spray that escapes from the connection and runs down the wall are all usually caused by the same small set of problems: worn washers, loose threads, mineral buildup, or a failing shower valve. Most of these fixes take less than half an hour, need only basic tools, and cost a few dollars in parts. This guide walks through how to find the source of the leak, fix it step by step, and know when the showerhead itself is the problem and should be replaced.

Why Showerheads Leak

A showerhead leaks for a few predictable reasons, and the fix depends on which one you have. The most common cause is a worn washer or O-ring inside the showerhead or at the connection to the shower arm. The rubber washer compresses every time the showerhead is tightened, and over years of hot water and mineral exposure it hardens, cracks, and stops sealing. Water then escapes past the washer and drips from the joint or from the showerhead face. A second common cause is a loose or poorly sealed threaded connection. The showerhead screws onto the shower arm, and if the threads are not sealed with Teflon tape or pipe dope, water finds the spiral path between the threads and leaks out.

Mineral buildup is a third cause, and it is common in homes with hard water. Calcium and lime collect in the small spray nozzles, and the blockage raises the pressure inside the showerhead, which forces water out through the weakest seal. A showerhead that sprays unevenly or in odd directions is often a mineral problem as well as a leak problem. The fourth cause sits behind the wall: a worn shower valve cartridge. The cartridge controls the flow of water to the showerhead, and when its seals wear out, water keeps flowing to the showerhead even when the handle is off. If the showerhead drips constantly and the drip does not stop no matter how tightly you turn the handle, the valve is the likely cause, and the fix is a cartridge replacement rather than a showerhead repair. For valve work, see our shower and tub plumbing hub and shower valve replacement costs.

Diagnose Where the Leak Is Coming From

Before you take anything apart, find out exactly where the water is coming from. Dry the showerhead and the shower arm with a towel, turn the water on for a few seconds, then turn it off and watch. If water drips from the showerhead face for a minute or two and then stops, that is usually leftover water draining out of the showerhead, not a leak. If the drip continues for more than a few minutes, or if it drips steadily for hours, water is getting past the valve or the seals. If water appears at the joint where the showerhead meets the shower arm, the connection seal is the problem. If water sprays from the base of the showerhead while the shower is running, the washer inside the showerhead or the ball joint seal has failed.

Run one more test to separate a showerhead problem from a valve problem. Turn the shower handle fully off and wait 10 minutes, then check the drip rate. Now turn the handle to the tub spout if your tub has one, and see whether the showerhead drip stops. If the drip stops when water is diverted to the tub spout, the shower valve or diverter is letting water through to the showerhead, and the valve needs attention. If the drip continues at the same rate, the leak is in the showerhead or its connection. This test takes a few minutes and saves you from replacing a showerhead when the valve is the real problem, or the other way around.

Tools and Parts You Will Need

You need very few tools for a showerhead leak repair. An adjustable wrench or a pair of slip-joint pliers, a roll of Teflon tape, a replacement rubber washer that matches your showerhead size, and a cloth or rag to protect the finish are enough for most fixes. A small bowl of white vinegar and an old toothbrush are useful if mineral buildup is part of the problem. Keep a bucket or a towel under the shower arm to catch the water left in the pipe when you unscrew the showerhead. Do not use a pipe wrench on a chrome shower arm, because the teeth will scar the finish, and do not use excessive force on any part, since the shower arm threads into a fitting inside the wall and can break free if you twist it too hard.

Buy the washer before you start, or be ready to take the old one to the hardware store to match it. Showerhead washers come in a few standard sizes, and the most common is a 1/2-inch rubber washer that fits between the showerhead and the shower arm. Some showerheads use a cone-shaped washer or a flat washer with a built-in screen, and some have an O-ring around the ball joint instead. If your showerhead has a filter or a screen in the inlet, clean it while you have the showerhead off, because a clogged screen raises the pressure inside the showerhead and can cause leaks. A new showerhead, if you decide to replace rather than repair, costs 20 to 150 dollars depending on the type and finish.

Fix a Leak at the Shower Arm Threads

A leak at the threaded joint is the simplest fix. Turn the water off at the shower handle, then unscrew the showerhead from the shower arm by hand. If it is stuck, wrap a cloth around the connection nut and use an adjustable wrench, turning counterclockwise, and hold the shower arm steady with your other hand so you do not twist the arm inside the wall. Once the showerhead is off, peel the old Teflon tape off the shower arm threads and clean them with a rag. Inspect the threads for damage: a nicked or flattened thread can leak no matter how much tape you use, and a damaged shower arm should be replaced.

Wrap new Teflon tape around the shower arm threads, 4 to 6 turns, in the direction the showerhead screws on, which is clockwise when you look at the end of the arm. Pull the tape snug so it sits down in the threads, and tear it off cleanly at the end of the wrap. Do not wrap the tape the wrong way, because it will bunch up and unwind when you screw the showerhead on. Set the washer inside the showerhead nut if your showerhead uses one, then screw the showerhead onto the arm by hand until it is snug, and give it a quarter turn with the wrench through the cloth. Turn the water on and check the joint. If it still leaks, take the showerhead off, add one or two more wraps of tape, and try again. A properly taped joint should not need pipe dope, and adding dope over tape is usually unnecessary.

Fix a Worn Washer or Faulty Cartridge

If the joint is sealed and the showerhead still drips, the washer inside the showerhead is the next suspect. Unscrew the showerhead from the arm and look inside the connection nut. You should see a rubber washer seated in a groove, and it may be cracked, flattened, or stuck to the arm. Pry it out with a small flat screwdriver, match it at the hardware store, and press the new washer into the groove so it sits flat. Some showerheads also have a small ball joint where the head pivots, and that joint has an O-ring that can wear out. If the leak is at the pivot, replace the O-ring, clean the ball surface, and reassemble. A thin smear of silicone grease on the O-ring helps it seal and keeps it from drying out.

If the showerhead still drips after the washer is replaced and the threads are sealed, the problem is the shower valve cartridge. The cartridge sits behind the shower handle, inside the valve body in the wall, and it controls the water flow. To replace it, turn off the water to the bathroom, remove the handle and the trim plate, and pull the cartridge out with pliers or a cartridge puller. Take the old cartridge to the store to match it, because cartridges are brand and model specific, and installing the wrong one will not seal. Push the new cartridge in the same way the old one came out, reassemble the trim, and turn the water back on. If the valve body itself is cracked or corroded, the whole valve needs replacing, and that is a job for a plumber. For trim and valve costs, see shower trim kit costs.

When to Replace the Showerhead

Repair is the right call when the showerhead is in good shape and the only problem is a washer or a seal. Replacement is the better choice when the showerhead is old, corroded, or clogged beyond cleaning. A showerhead with a cracked housing, a seized pivot joint, or nozzles that stay blocked after an overnight vinegar soak will keep leaking or spraying badly no matter how many washers you replace. Mineral buildup inside the showerhead can also narrow the internal passages so much that the pressure rises and forces water past the seals, and at that point a new showerhead is cheaper than repeated repairs.

When you shop for a replacement, match the connection size, which is 1/2 inch for nearly all US shower arms, and choose a model with a built-in washer and a metal connection nut rather than plastic, since metal nuts seal better and last longer. A new showerhead installs the same way as the repair: clean the arm threads, wrap fresh Teflon tape, seat the washer, and tighten by hand plus a quarter turn. Run the shower for a minute and check the joint, then check again after an hour. A new showerhead is also a good moment to consider water use: a modern low-flow showerhead rated at 1.8 gallons per minute saves water without a noticeable drop in pressure, and it reduces the load on the valve and the water heater.

Showerhead Repair and Replacement Costs

Fixing a leaky showerhead is one of the cheapest plumbing repairs in a home. A roll of Teflon tape costs 1 to 3 dollars, a replacement washer costs 1 to 5 dollars, and a bottle of white vinegar for cleaning mineral buildup costs about 3 dollars. A new mid-range showerhead costs 20 to 80 dollars, and a premium rain or handheld model runs 80 to 200 dollars. If you hire a plumber, a showerhead repair typically costs 75 to 150 dollars, and a shower valve cartridge replacement costs 150 to 350 dollars including parts and labor. A full shower valve replacement, which involves opening the wall, runs 500 to 1,200 dollars.

A leaky showerhead wastes more water than most people expect. A drip of one drop per second wastes about 3,000 gallons a year, and a steady trickle can waste far more, along with the energy used to heat that water. Fixing the leak pays for itself in a few weeks of saved water, and it stops the drip from staining the tub or keeping you awake. Start with the tape and washer, since those two fixes solve most leaks in under half an hour. If the drip continues after a new washer and a sealed joint, the valve cartridge is the next step. For help with a valve replacement or a showerhead that will not come off the arm, call a local plumber at (877) 762-1902.