Why Your Faucet Drips Again a Week After You Fixed It

TL;DR: If a faucet drips again within a week or two of a repair, the washer or cartridge was likely the wrong size or type, or the real problem is a scored valve seat that a washer alone can't fix. A proper repair usually costs $10-$40 in parts and lasts 5-10 years; a repeat drip that fast means something upstream of the washer needs attention.

_Last reviewed: July 2026 · 6 min read_

You replaced the washer, tightened everything back up, and felt good about it. Then a week later, the same drip is back, sometimes worse than before. This is one of the most common repeat repairs in a house, and it almost always traces back to one of four things.

Okoniq Property Hub lets you log the exact part number and date of every faucet repair, so the next fix (yours or a plumber's) starts with facts instead of guesswork.

Did you use the wrong replacement part?

Yes, this is the most common reason a fix fails fast. Faucets aren't universal. A compression faucet uses a rubber washer that presses against a valve seat; a cartridge faucet uses a plastic or brass cartridge; a ball faucet uses a rotating ball with springs and seats; a ceramic-disc faucet uses two disc plates. Using a washer kit on a cartridge faucet, or grabbing the nearest size washer instead of matching the original, is why the drip returns almost immediately.

Check the faucet brand stamped on the base or handle (Moen, Delta, Kohler are the most common) and look up the exact model before buying parts. Big-box stores sell generic "universal" washer kits, but a washer that's 1/32 inch off in diameter or thickness won't seat properly under water pressure. If you're not sure which type you have, pull the handle off and look. Cartridge faucets have a single cylindrical piece that slides straight out; compression faucets have a stem you unscrew.

Is the valve seat the real problem, not the washer?

Often, yes. Every time a compression faucet is used, the washer presses against a metal valve seat inside the faucet body. Over years, that seat gets scored, pitted, or corroded, especially in homes with hard water. A brand-new washer pressed against a damaged seat will seal for a few days, then wear through fast because it's sitting on an uneven surface.

The fix is a seat wrench, a cheap tool ($8-$15) that unscrews the seat so you can replace it, or a seat-grinding tool that resurfaces it in place. If you replaced the washer and the drip came back within 10-14 days, pull the stem again and run a finger across the seat. If it feels rough or pitted rather than smooth, that's your answer. This is also a case where, if the faucet is older than 15-20 years, replacing the whole faucet body can be cheaper than fighting a worn seat.

Could water pressure or temperature swings be the cause?

Sometimes. If your home's water pressure runs above 80 psi (test with a $10 gauge on an outdoor spigot), it stresses every washer and cartridge in the house faster than normal, and a repair that should last years might only last months. Municipal supply spikes, especially overnight when demand drops, can also push a borderline-worn washer over the edge.

Hot water lines see more wear than cold, because heat softens rubber washers faster. If the hot side keeps dripping and the cold side stays fine, that's a clue the washer material itself (not the installation) is degrading quickly. Silicone washers hold up better than rubber in hot-water applications and cost about the same.

| Compression Faucet | Cartridge Faucet | |---|---| | Two handles, separate hot/cold | Single or dual handle, moves smoothly | | Rubber washer + metal seat | Replaceable plastic/brass cartridge | | Common failure: worn seat | Common failure: worn O-rings on cartridge | | Repair cost: $10-$20 in parts | Repair cost: $15-$40 in parts |

Did you tighten it correctly, or is something else leaking?

This matters more than people think. Over-tightening the packing nut or handle screw can actually cause a faster drip by warping the washer or cracking a cartridge housing. Under-tightening leaves a gap for water to seep past even a good washer. Snug is the target: firm by hand, then a quarter turn with a wrench, not as tight as you can physically make it.

Also confirm the drip is coming from the spout and not from under the sink at the supply line or the base of the faucet where it meets the counter. A slow leak at the base can look like a spout drip once water runs down the outside of the faucet, and no washer replacement will fix that. If you're chasing a leak that seems to move around, it's worth checking connections the way you'd approach any clogged drain repair: work from the fixture backward, one joint at a time, until you find where water actually originates.

When should you just call a plumber?

Call one if you've replaced the correct part twice and it's still dripping, or if the faucet is original to a house built before 2000 and parts are getting hard to find. A licensed plumber will typically diagnose and fix a persistent drip in 30-60 minutes for $75-$150 in labor, which is often less than the cost of buying three wrong parts trying to guess your way through it. It's also worth a call if you notice water staining on cabinetry below the sink, since that can signal a slow leak that's been running longer than the visible drip suggests, similar to how a ceiling water stain often points to a problem well upstream of where the damage shows.

FAQ

Why does my faucet drip only at night?

Water pressure typically rises overnight when household demand drops, pushing more water past a partially worn washer or seat that might hold fine during the day.

How much water does a dripping faucet actually waste?

A faucet dripping once per second wastes roughly 3,000 gallons a year, according to EPA WaterSense estimates, which is enough to fill about 180 bathtubs.

Can I use plumber's tape instead of replacing the washer?

No, plumber's tape (Teflon tape) seals threaded pipe connections, not the washer-to-seat contact point inside a faucet, so it won't stop a drip caused by a worn washer or seat.

How long should a faucet repair last if done correctly?

A properly matched washer or cartridge, installed with a smooth valve seat, typically lasts 5-10 years before it needs replacing again.

Is it cheaper to replace the whole faucet instead of repairing it again?

If a faucet is over 15-20 years old and you're on a second or third repair attempt, a new faucet ($60-$200 for a mid-range model) often costs less over time than replacement parts and repeated labor.

This is educational information, not plumbing advice. Call a licensed plumber if a leak persists after two repair attempts or if you notice water damage near the fixture.