A faucet that drips day and night is more than an annoyance. A single steady drip can waste thousands of gallons of water over the course of a year and quietly drive up your utility bill. Left alone, the same worn internal part that causes the drip often gets worse, and the leak can move from the spout to the base of the faucet, where it damages the countertop or cabinet below. The encouraging news is that most faucet leaks come from a small number of replaceable parts, and with a little patience you can usually fix them yourself.
This guide walks you through how to identify the type of faucet you have, the tools and parts involved, and the step-by-step repair for each major design. It also covers the signs that a leak has moved beyond a simple DIY fix, so you can call a licensed plumber before the problem spreads.
Why You Should Fix a Leaky Faucet Sooner Rather Than Later
Water is patient. A slow drip erodes valve seats, corrodes metal surfaces, and stains sinks and counters over time. What begins as a ten-dollar part can turn into a faucet replacement if the leak is allowed to continue. In cold climates, a faucet that drips at the spout can also contribute to freeze risk in exterior walls because it keeps water moving through a line that would otherwise drain. Fixing a drip promptly protects both your plumbing and your water bill.
If you notice moisture around the base of the faucet rather than at the spout, the problem may be a supply-line connection or a failed seal underneath the sink. That situation is closely related to hidden leaks inside cabinets and walls, and our guide on detecting hidden water leaks can help you track down the source before it causes structural damage.
Identify Your Faucet Type First
The repair depends entirely on the faucet's internal design. Before you buy any parts, figure out which of the four common types you have:
- Compression faucet: Usually found on older sinks, this design uses a rubber washer that presses down against a valve seat when you turn the handle. Two handles, one for hot and one for cold, are a common clue.
- Ball-type faucet: A single handle moves over a metal or plastic ball with openings that align to mix hot and cold water. Common in kitchens.
- Cartridge faucet: A single or double handle moves a replaceable cartridge that controls flow and temperature. This is the most common modern design.
- Ceramic disk faucet: A single handle operates two ceramic plates with precision-machined openings. Durable and common in mid-to-high-end fixtures.
If you are unsure, look up the brand name stamped on the faucet body or under the handle, then find the matching repair kit. Take a photo of the faucet and its handle before disassembly so you can reassemble it correctly.
Tools and Parts You Will Need
Gather everything before you start so the water stays off for the shortest possible time:
- Adjustable wrench and a basin wrench for tight spaces
- Screwdrivers, including a small flathead for prying caps
- Allen wrenches, since many single-handle faucets use a set screw
- Replacement washers, O-rings, springs, or a cartridge kit for your faucet model
- Plumber's grease for lubricating new rubber parts
- Vinegar and a small brush for removing mineral scale
- Bucket, towels, and a flashlight
Repairing a Compression Faucet
Compression faucets are the simplest to repair. Turn off the water, then remove the handle by prying off the decorative cap and unscrewing the screw underneath. Use a wrench to loosen the packing nut and lift out the stem assembly. At the bottom of the stem you will find the rubber seat washer, which is almost always the source of a spout drip. Replace it with an exact match, and inspect the valve seat inside the faucet body for grooves or corrosion. A worn seat can be reconditioned with a seat reaming tool, but if it is badly damaged, replacing the faucet is often the more sensible path.
When you reassemble, coat the new washer and the stem threads with a thin layer of plumber's grease. Reinstall the stem, tighten the packing nut snugly but not forcefully, and test.
Repairing a Cartridge or Ceramic Disk Faucet
Cartridge faucets usually leak at the spout or the base, and the fix is a direct replacement. Remove the handle, take out the retaining clip or nut, and pull the old cartridge straight out with a pair of pliers. Note its orientation before removing it, because the new cartridge must go in the same way. Clean any scale from the inside of the faucet body with vinegar, then slide the new cartridge into place and secure it.
Ceramic disk faucets follow a similar process, but the cartridge contains two ceramic plates rather than rubber seals. These plates seldom wear out, so a leak is more often caused by debris or scale between them. Cleaning the plates and the surrounding seals sometimes restores proper operation, but if the cartridge is cracked or chipped, replacement is the answer. On both designs, a drip from the base rather than the spout usually means worn O-rings, which are inexpensive to replace.
Repairing a Ball-Type Faucet
Ball-type faucets use springs and rubber seats that press against the ball to control flow. A spout drip frequently points to worn springs and seats. Remove the handle, take off the cap and cam assembly, and lift out the ball. You will see small rubber seats and springs seated in the faucet body. Pull them out with needle-nose pliers, replace them with a matching kit, and clean the ball and interior before reassembling. A sticky handle often improves after cleaning and applying a small amount of plumber's grease to the new rubber parts.
Tips to Prevent Future Leaks
- Turn handles gently and avoid forcing them past their stop
- Address hard water scale early with periodic vinegar cleaning of aerators and cartridges
- Keep water pressure in the typical 40 to 60 PSI range to reduce strain on seals
- Replace worn rubber parts as a set rather than one at a time
- Inspect supply lines and shut-off valves while you are already under the sink
High water pressure accelerates wear on every faucet in the home. If your fixtures seem to drip more often than they should, our guide on water pressure problems and the related post on water hammer explain how pressure affects the whole system.
When to Call a Licensed Plumber
Call a professional if the faucet body itself is cracked, if the leak continues after you have replaced the internal parts, or if water appears at the base because of a corroded valve or supply line. Older fixtures with seized shut-off valves, corroded stems, or discontinued parts can be difficult to repair, and a plumber can advise whether a repair or a replacement makes more sense. Persistent leaks can also signal a deeper pressure problem that calls for proper testing.
Fixing a faucet is one of the most approachable plumbing repairs, but it is not worth risking a flooded cabinet or a broken valve. If you would rather have it handled, call (888) 205-1556 to get connected with a licensed plumber near you, or visit our services page to see the work we help with. TotalPlumbNetwork is available 24/7 nationwide, so you can get help whenever a leak appears.
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