A faucet is small, but the way it fails in Mesa is specific. Very hard water drives mineral into every moving part: cartridges seize, aerators crust over and cut the flow, and the little angle-stop valves under the sink lock up so hard they will not turn when you finally need them. What starts as a drip becomes a fixture nobody can shut off.
Some of this is a quick repair and some of it is a replacement, and the honest answer depends on the faucet. A quality fixture with a worn cartridge is worth fixing. A builder-grade faucet that is corroding internally is usually better replaced, and this is the moment to also free up those seized shutoffs.
What hard water does to a faucet, part by part
The cartridge is the heart of a single-handle faucet, and it is the first casualty of scale. Mineral builds on the moving surfaces until the handle gets stiff, then it drips because the worn cartridge no longer seals. An aerator, the screen at the tip, clogs with the same mineral and throttles the flow to a trickle, which people often mistake for a pressure problem.
The quiet danger is under the sink. Angle stops are meant to let you isolate one fixture, but if they have sat untouched for years in hard water they seize solid. During any faucet work those get exercised or replaced, so the next repair does not require shutting the whole house off. If the flow issue is house-wide rather than one tap, that points instead to a supply problem worth checking.
| Symptom | Likely cause | Fix |
|---|---|---|
| Constant drip | Worn or scaled cartridge or washer | Replace the cartridge, or the faucet if far gone |
| Weak flow at one tap | Aerator clogged with mineral | Clean or replace the aerator |
| Stiff handle | Scale on the cartridge | Rebuild or replace the cartridge |
| Shutoff will not turn | Angle stop seized with hard water | Replace the angle stop |
Repair or replace, decided honestly
A good faucet with a failed cartridge is a straightforward repair, and the right cartridge brings it back to full function. Where replacement wins is a fixture that is pitted, leaking at the base, or so mineral-bound that parts are no longer available. Putting a new cartridge in a dying faucet is money spent twice.
New installs are common with remodels and are usually quick, and they are the ideal time to update those shutoff valves and check the supply lines feeding them. If a whole bathroom or kitchen is being redone, faucet work folds into the larger fixture installation rather than a separate visit.
Faucet Repair & Installation questions, answered
Why does my new-ish faucet already drip?
Very hard water is hard on cartridges. Mineral builds on the sealing surfaces faster than in soft-water regions, so even a fairly new faucet can start dripping. The fix is usually a fresh cartridge; if the body itself is corroding, replacement is the better value.
The water pressure at one faucet is weak but fine elsewhere. Why?
That is almost always a clogged aerator, the little screen at the tip, filled with mineral. Cleaning or replacing it restores the flow. If the weak flow is house-wide instead of one tap, that is a different problem worth checking at the supply.
Should I repair or replace a faucet?
A quality faucet with a worn cartridge is worth repairing. A builder-grade or corroding fixture, or one whose parts are no longer available, is better replaced. We will tell you honestly which one yours is rather than default to the bigger job.
Why will not the shutoff valve under my sink turn?
Because it seized. Angle stops that sit for years in hard water lock up with mineral. During faucet work those get freed or replaced, which matters because a working shutoff is what lets you isolate one fixture instead of the whole house next time.
Can you install a faucet I bought myself?
Yes. Homeowner-supplied fixtures are fine to install. We will check that it fits the sink and the supply lines and flag anything about it before fitting, and update tired shutoffs and supply lines while the space is open.
Need faucet repair & installation in Mesa today?
Call and describe what is happening. You will reach a plumber, not a form.