Why Your Faucet Won't Stop Dripping (And What It Actually Takes to Fix It)

Not all faucets are built the same. The brand, price point, and internal design of your faucet determine whether it can be repaired or whether it needs to be replaced entirely.

Most faucets sold in the United States through big box stores and online retailers are made with lower-grade internal components. They are designed to last a few years, not a few decades. When one of these faucets starts dripping, the internal seals and cartridge are usually worn beyond what a simple repair can fix. Replacing the cartridge on a budget faucet often takes more labor and parts than just installing a new one.

Higher quality name-brand faucets from manufacturers like Moen, Delta, Kohler, or Grohe are built differently. These faucets use replaceable cartridges designed to be serviced. If you have a quality faucet and it starts dripping, a cartridge replacement will usually resolve the problem. It is not 100% guaranteed, because in some cases the valve body itself can develop wear over time, but cartridge replacement is the first and most common repair path for a well-made faucet.

The takeaway: if you bought a cheap faucet, plan to replace it. If you bought a quality one, plan to repair it.

Hard water, high mineral content, chlorine levels, and sediment in your water supply all affect how long your faucet internals last. Homes with hard water tend to see faster buildup of calcium and mineral deposits inside the cartridge and on the rubber seals. This buildup prevents the seals from closing completely, which creates a slow drip that gradually gets worse.

If you live in an area with hard water and you are dealing with recurring faucet drips across multiple fixtures, the issue may not be the faucets themselves. It may be your water quality slowly degrading every fixture in the house. A water softener or whole-house filtration system can dramatically extend the life of your plumbing fixtures, including faucets, shower valves, and even your water heater.

Bathroom faucets are the most commonly replaced faucets in the home. They are used multiple times a day, and because they are often the least expensive fixture in the bathroom, most homeowners opt for replacement over repair.

If your bathroom faucet is dripping from the spout, the cartridge or internal valve is no longer sealing properly. If it is dripping from the base of the faucet where it meets the countertop, the O-rings underneath have likely worn out or the connections have loosened over time.

For most standard bathroom faucets: replace the faucet. The labor to source, diagnose, and replace the internal cartridge on a budget faucet is often comparable to the labor to install a brand new fixture, and a new fixture comes with a new warranty.

For quality bathroom faucets (Moen, Delta, Kohler): try a cartridge replacement first. Many of these manufacturers offer lifetime warranties on cartridges and will send you a free replacement if you contact them directly. A plumber can install it in under an hour.

Kitchen faucets take more abuse than any other faucet in the home. They are used for cooking, cleaning, filling pots, rinsing dishes, and running the garbage disposal. A kitchen faucet that drips is usually showing wear from heavy daily use.

The same repair-vs-replace decision applies here. Budget kitchen faucets are not worth repairing. Quality kitchen faucets with single-handle cartridge designs (like the Moen 1225 cartridge, one of the most common and reliable cartridges in residential plumbing) can almost always be fixed with a cartridge swap.

One thing specific to kitchen faucets: if the drip is coming from the pull-down spray head or the hose connection rather than the main spout, the issue may be a worn spray head, a failing check valve, or a loose hose connection under the sink. These are often cheaper fixes that do not require replacing the whole faucet.

Shower and tub drips are a different situation entirely. Unlike a bathroom or kitchen faucet that sits on a countertop, a shower or tub valve is installed behind the wall. That changes the repair equation significantly.

The most common cause of a dripping shower or tub is a worn cartridge inside the valve body. For single-handle shower valves (like the Moen Posi-Temp, one of the most widely installed shower valves in residential plumbing), a cartridge replacement will resolve the drip in the vast majority of cases. The cartridge is accessible from the front of the valve without opening the wall, and a licensed plumber can typically complete the replacement in under an hour.

For two-handle or three-handle shower and tub valves, the repair path depends on the valve type. Compression valves use rubber washers and seats that wear over time. These can be replaced, but if the valve body itself is corroded or worn, the entire valve may need to be replaced. Replacing a shower valve behind a wall is a more involved repair that may require opening the wall for access, which adds to the cost.

There are also situations where the drip is not coming from the valve at all. A tub spout with a built-in diverter (the pull-up knob that redirects water to the shower head) can develop internal wear that allows water to trickle through the spout even when the diverter is engaged. Similarly, some shower heads have check valves or internal seals that degrade over time and allow a slow trickle of water even when the valve is fully closed. These are less common causes but worth checking before committing to a full valve replacement.

A few guidelines that licensed plumbers use when advising homeowners:

If the faucet is a builder-grade or budget fixture and it is more than 3 to 5 years old, replace it. The cost of diagnosis and repair often approaches or exceeds the cost of a new fixture.

If the faucet is a quality name-brand fixture, try a cartridge replacement first. Contact the manufacturer directly, as many offer free replacement cartridges under warranty.

If a shower or tub valve is dripping, start with a cartridge replacement. It is the least invasive and most cost-effective first step. Only consider full valve replacement if the cartridge swap does not resolve the drip or if the valve body is visibly corroded or damaged.

If multiple fixtures in the home are dripping or developing issues around the same time, consider having your water quality tested. Hard water and high mineral content can cause system-wide fixture degradation that no amount of individual repairs will permanently fix.

Pricing on faucet and shower valve work depends on three things: the specific fixture or cartridge involved, the complexity of the installation (especially behind the wall), and whether you call a large brand-name service company or a smaller local plumber. Ask any plumber to itemize the fixture and the labor separately on the quote so you can compare clearly. PlumberAI can help you narrow down what your specific situation should look like before you approve anything.