How to clean calcium buildup on faucets and shower heads in Las Vegas

Why every tap in the valley crusts up

The Las Vegas Valley Water District’s water quality summary, published in 2026 with 2025 data, puts the valley’s hardness at 280 parts per million, 16 grains per gallon, mostly calcium and magnesium. The district calls the effects solely aesthetic, and it is clear about where they come from: “Mineral residue on surfaces only occurs when water is allowed to evaporate.” A faucet aerator or shower face stays damp and dries over and over, so it collects more than anything else in the room. The district’s full mineral breakdown of Las Vegas tap water explains the rest.

Scale isn’t only on the outside. The University of Florida’s IFAS extension service notes that in hard water, scale can build excessively inside pipes, faucets and water heaters, and suggests cleaning faucets, aerators and shower heads with acid-based cleaners. White vinegar is the mild acid every maker below uses.

Faucet aerator

The aerator is the small screen at the tip of the spout. When flow turns weak or sprays sideways, it is usually packed with flakes of scale.

Delta’s instructions are short: remove the aerator, soak it in vinegar overnight, then flush with water; for stubborn deposits, rub with a toothbrush. Unscrew it by hand if you can. If it won’t budge, Kohler notes that parts like aerators can be hard to remove when heavy scale has built up, and suggests a rubber glove, a rubber jar opener or a strap wrench for grip rather than bare pliers on the finish.

Before screwing it back, run the faucet for a few seconds to flush out loose grit.

How to clean calcium buildup on the faucet body

Kohler’s method for hard water buildup on a faucet:

1. Soak a towel in a 50/50 solution of white vinegar and warm water.
2. Wrap it around the crusted area.
3. Leave it about five to ten minutes.
4. Wipe with a clean cloth or soft sponge and the same solution.

Moen allows a 50/50 blend of household vinegar and water “for a limited amount of time” on its finishes, and says all cleaners should be rinsed off with water straight after cleaning, then the faucet dried with a soft cloth. Leaving vinegar on plated metal for hours is not what the makers describe.

How to clean hard water from a shower head

Delta’s guide to cleaning a shower head:

1. Mix equal parts distilled white vinegar and water, starting with a cup of each, in a container large enough to cover the head.
2. Soak the shower head for 30 minutes.
3. Rub the spray face gently with a soft cloth or a toothbrush.
4. Repeat until the deposits wipe away, then rinse and dry.

If you can’t take the head off, a plastic bag of the same mix tied around it does the same job; that tip is common practice rather than Delta’s. Many shower heads have soft rubber nozzles, and Delta says mineral residue on its rubber spray holes can simply be wiped away by hand, so rub those first.

How to clean calcium buildup in a shower head that won’t spray evenly

Weak or wild jets mean scale inside the nozzles. Work each soft nozzle with a fingertip after soaking to push out the loosened flakes, then run the water hot for a minute. Don’t take the head apart unless your model’s instructions say how.

Sink and drain

Sinks pick up a white tide line around the drain and under the faucet where water pools and dries. The same towel-and-vinegar wrap works on most sink surfaces; New Mexico State University’s extension guide to cleaning products says vinegar removes hard water deposits and rust stains from sinks. Rinse well, because acid left on some finishes and on natural stone can etch it.

Drains collect scale too, out of sight. A slow drain on valley water is more often hair and soap stuck to a rough, scaled pipe than scale alone. Pouring vinegar down a drain won’t remove scale from pipes in any meaningful way, and we found no official source saying it does.

How to clean calcium buildup: the vinegar soak, step by step

For anything you can unscrew, such as an aerator, a hand-shower head or a sprayer nozzle:

1. Remove the part and note how it went on (a photo helps).
2. Cover it with white vinegar, or a 50/50 vinegar and water mix for plated parts.
3. Soak: 30 minutes for light film, overnight for a packed aerator, as Delta does.
4. Brush with an old toothbrush, rinse under the tap and refit.

What to avoid on fixtures. Delta lists abrasive cleaners, bleach-based cleaners, industrial cleaners, tarnish and rust removers, polishes, abrasive sponges, and products containing hydrofluoric, hydrochloric or phosphoric acids as things that can damage the finish and possibly void the warranty. Moen warns that most green fibrous scrub pads contain mineral particles that scratch faucet finishes, and that not following its cleaning instructions may void its warranty.

How to get rid of calcium buildup for good: prevention

• Dry the fixture. The water district’s rule is that deposits on fixtures “can be prevented by wiping surfaces dry.” A quick towel pass after the last shower of the day keeps the shower head and valve clear.
• Clean little and often. A ten-minute vinegar wrap once a month beats chiselling at a year of crust.
• Treat the water. The district lists household water softeners among the ways to reduce hard-water problems. A softener removes the calcium and magnesium before it reaches any tap, so the crust stops forming. Salt-free systems in Las Vegas work differently and leave the minerals in the water.

Renting? A water softener for an apartment in Las Vegas covers what you can do without changing the plumbing. For crust on glass, dishes and appliances, see Las Vegas hard water problems.

Shower filters: what they do and don’t remove

A shower filter screws on between the arm and the head. NSF’s listings of shower filters certified to its shower filtration standard (NSF/ANSI 177) show one claim for every listed model: free available chlorine reduction. None lists hardness, calcium or scale reduction. The water district says the same of inexpensive activated carbon filters: they can improve taste and odor linked to chlorine, but “do not remove hardness, minerals, sodium or fluoride.”

So a shower filter may help if chlorine bothers you, but expect the same calcium crust on the head. If you buy one, look for its NSF/ANSI 177 certification and replace the cartridge on schedule. Our page on a filter for hard water compares the types that do remove minerals.

Sources for this page

• Las Vegas Valley Water District · water quality summary (2026, 2025 data) and water quality questions page (current, checked October 2026) · hardness, calcium and magnesium; residue only where water evaporates; wiping dry; aesthetic only; water softeners; carbon filters don’t remove hardness
• Delta Faucet Company · aerator answer and shower head cleaning guide · current, checked October 2026 · overnight aerator soak, 50/50 shower head soak for 30 minutes, rubber nozzles, cleaners that damage finishes
• Kohler · help article on hard water buildup on faucets · current, checked October 2026 · vinegar towel wrap for five to ten minutes, gripping scaled aerators
• Moen · faucet finish care and cleaning guide · current, checked October 2026 · limited vinegar use, rinsing, green scrub pads, lime scale removers, warranty
• NSF · listings of certified shower filtration systems (NSF/ANSI 177) · checked October 2026 · free available chlorine reduction is the only listed claim
• University of Florida IFAS Extension · Marion County hard water article · 2021 (updated 2022) · scale inside pipes and faucets; acid-based cleaners for aerators and shower heads
• New Mexico State University Cooperative Extension Service · guide to home cleaning products · 2012 · vinegar removes hard water deposits from sinks