A dripping faucet is one of the most common calls we get, and also one of the most misunderstood. The fix depends entirely on what kind of faucet you have and what's actually failing inside it — and in the Twin Cities, hard water plays a bigger role in that failure than most homeowners realize. Here's how to figure out what's going on before you decide between a repair and a full replacement.
Identify Your Faucet Type First
The internal design of your faucet determines what's likely failing, and you can usually tell which type you have just by looking at the handle:
- Compression faucets have two separate handles (hot and cold) that screw down multiple turns to shut off. This is the oldest design, most common in homes built before the 1990s, and the most prone to dripping.
- Cartridge faucets use a single handle (or sometimes two) that lifts and rotates smoothly rather than screwing down. A replaceable cartridge inside controls flow and temperature.
- Ball faucets have a single handle that sits on a rounded cap directly above the spout and swivels in multiple directions. Common in kitchen faucets from the 1980s and 90s.
- Ceramic disc faucets use a single wide lever with a short, crisp quarter-turn range. This is the most modern and most durable design, found in most newer faucets.
Knowing your type matters because a compression faucet's fix (a new washer) is a completely different job from a ceramic disc faucet's fix (a new cartridge assembly) — and a repair approach for one won't do anything for the other.
What's Actually Causing the Drip
Each faucet type fails in a different, predictable way:
- Compression faucets drip because the rubber washer at the end of the stem has flattened, hardened, or torn after years of being compressed against the valve seat. This is usually a cheap, quick fix — unless the valve seat itself has corroded, in which case a new washer won't seal properly no matter how many times you replace it.
- Cartridge faucets drip when the O-rings or the cartridge itself wears out. Cartridges are brand- and model-specific, so the right replacement part matters — a close-enough substitute often won't seal correctly.
- Ball faucets drip when the internal springs, valve seats, or the ball itself wear out. These have more moving parts than a cartridge design, which means more potential failure points, but a full repair kit typically replaces everything at once.
- Ceramic disc faucets rarely drip, since the two polished ceramic discs create a very tight seal. When they do, it's usually sediment lodged between the discs or a failed seal around the cartridge housing — the ceramic discs themselves cracking is rare.
Two Culprits That Aren't the Faucet's Fault
Sometimes the problem isn't really the faucet — it's what's feeding it:
- Hard water. The Twin Cities' notoriously hard water leaves mineral deposits on washers, valve seats, and inside cartridges, which prevents a full seal even in a relatively new faucet. If you're replacing the same part more often than seems reasonable, hard water buildup — not a defective part — is often the real cause. Softening your water reduces how often this happens across every faucet in the house, not just the one that's currently dripping.
- High water pressure. Pressure above about 80 psi can physically overpower the seals in any faucet type, forcing water past components that would otherwise hold. If a drip seems to come and go depending on whether other fixtures are running, elevated or fluctuating pressure is worth checking before you replace parts that aren't actually the problem.
Repair or Replace? Here's How We Think About It
A repair is almost always the better value when:
- The faucet is a quality brand with available replacement parts
- The valve seat (in a compression faucet) or faucet body isn't corroded
- The drip is isolated to one worn component rather than several failing at once
Replacement starts to make more sense when:
- Replacement parts are discontinued. Some older or budget-tier faucets were never designed to be serviced long-term.
- The valve seat is corroded and can't be resurfaced or replaced, which means a new washer will never seal properly no matter how many times it's swapped.
- You've repaired the same faucet more than once for the same drip, which usually points to a worn-out faucet body rather than a single bad part.
- You're already updating the style or finish throughout the kitchen or bathroom.
If none of those apply, we'll tell you honestly that a repair is the smarter move — we're not going to sell you a new $300 faucet when a $12 cartridge solves the problem.
A Note on Kitchen Faucets Specifically
Pull-down and pull-out kitchen faucets have one more common failure point that bathroom faucets don't: the diverter valve inside the spray head, which redirects water between the regular spout and the spray function. A kitchen faucet that drips from the spray head, or where water dribbles from the base of the spout when the sprayer is in use, often points to this diverter rather than the main valve — a distinction that changes what actually needs replacing.
When to Call a Plumber Instead of DIY-ing It
A straightforward washer or cartridge swap is a reasonable weekend project for some homeowners. It's worth calling in a professional when:
- The valve seat shows corrosion or pitting that a new washer won't seal against
- You're not sure which faucet type you have, or can't source the right cartridge for your specific model
- The leak continues after a part replacement, which usually means something else is actually failing
- Water has already reached the cabinet below the sink, since that can mean the supply line or shutoff valve is also involved, not just the faucet itself
Why Homeowners Choose SOS for Faucet Repair
- We diagnose the actual cause, not just swap the obvious part — including checking for hard water buildup or pressure issues that will just cause the next faucet to fail too.
- Repair first, when it makes sense. We'll always tell you honestly if a repair will hold before recommending a replacement.
- We carry parts for major brands — Moen, Kohler, Delta, and more — so most repairs are a single visit.
- Upfront pricing before any work begins.
Serving Prior Lake and the Twin Cities Metro
SOS Home Services is a family-owned plumbing company based in Prior Lake, MN, providing faucet repair and replacement within a 50-mile radius, including Minneapolis, St. Paul, Bloomington, Eagan, Eden Prairie, Burnsville, Lakeville, and Shakopee — available 24/7.
Frequently Asked Questions About Faucet Repair and Replacement
How do I know what type of faucet I have?Look at the handle. Two handles that screw down multiple turns mean a compression faucet. A single handle that lifts and rotates smoothly usually means a cartridge faucet. A single handle on a rounded cap that swivels in multiple directions is typically a ball faucet. A single wide lever with a short, crisp turn is usually a ceramic disc faucet.
Why does my faucet keep dripping even after I replaced a part?This usually means either the wrong replacement part was used, the valve seat is corroded and preventing a proper seal, or hard water mineral buildup is interfering with the new part just as it did with the old one.
Is it worth replacing a faucet instead of repairing it?If the faucet is a quality brand with available parts and only one component has failed, repair is almost always the better value. Replacement makes more sense when parts are discontinued, the valve seat can't be resurfaced, or the same drip keeps coming back despite repairs.
Why do my faucets seem to wear out faster than they should?Hard water is the most common reason in the Twin Cities. Mineral deposits accelerate wear on washers, cartridges, and valve seats across every faucet in the house, not just one. A water softener addresses the underlying cause rather than one symptom at a time.
My kitchen faucet's sprayer leaks, but the main spout is fine — what's wrong?This usually points to the diverter valve inside the pull-down or pull-out spray head, a different component than the faucet's main valve. It's a distinct repair from a standard drip fix.
Can I fix a dripping faucet myself?A washer or cartridge replacement is a reasonable DIY job for many homeowners, provided you shut off the water supply first and have the correct replacement part for your specific faucet model. If the drip continues after a part swap, or the valve seat shows visible corrosion, that's when it's worth calling a professional.
Dealing with a dripping or stubborn faucet? Call SOS Home Services at (612) 636-4357 or book your visit online at callsosnow.com. We serve Minneapolis and the entire Twin Cities metro, 24/7.
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