Austin’s water comes out of limestone, which means it carries a lot of dissolved minerals. When water dries, the minerals stay behind as white, chalky spots. You see it on shower doors, around faucets, on the tile, and inside the kettle. It is not dirt, so regular cleaner does not touch it. You need something acidic to dissolve it.
The one product that does most of the work
Plain white vinegar. It is cheap, it is safe around kids and pets, and it dissolves mineral deposits. The trick is contact time. Spraying and wiping does nothing. The vinegar has to sit on the spots for at least ten minutes, sometimes an hour for heavy buildup.
Shower glass
- Warm the vinegar slightly (30 seconds in the microwave) and spray the glass generously.
- Wait 15 minutes. Spray again if it starts to dry.
- Scrub with a non-scratch sponge. For stubborn glass, make a paste of baking soda and a little vinegar and rub in circles.
- Rinse and squeegee. Then keep a squeegee in the shower and use it after every shower. Thirty seconds a day means you never have to do the deep version again.
Faucets and shower heads
Soak a paper towel in vinegar, wrap it around the base of the faucet, and leave it for 30 minutes. For a shower head, fill a small bag with vinegar, tie it over the head so it is submerged, and leave it an hour. The crust wipes off afterward. If the finish is brushed nickel or oil-rubbed bronze, cut the vinegar with equal parts water and do not leave it as long, because strong acid can dull those finishes.
Tile and grout
Ceramic and porcelain tile can take vinegar. Spray, wait, scrub with a stiff brush along the grout lines, rinse well. If the grout has gone gray or orange, that is usually mildew rather than minerals, and it needs a different approach. I do that as an add-on if you want it handled.
Never put vinegar on natural stone
This is the one that costs people money. Granite, marble, travertine, and limestone are all etched by acid. Vinegar, lemon, and most “bathroom” cleaners will leave permanent dull patches. On stone, use a cleaner made for stone or just warm water and a drop of dish soap, and dry it right away so spots do not form in the first place. If you are not sure what your counters are made of, treat them like stone until you know.
Prevention beats scrubbing every time. Wipe faucets dry after use, squeegee the glass, and hard water becomes a non-issue.