How to Remove Hard Water Stains
Toronto's tap water has a moderate hardness level — it contains dissolved calcium and magnesium that leave white, grey, or brownish deposits on surfaces when water evaporates. These deposits appear on shower glass, faucets, showerheads, tiles, sink basins, and anywhere water pools and dries. Regular cleaning doesn't remove them because they're mineral residue, not dirt — you need an acid to dissolve them.
White Vinegar — The Standard Solution
White vinegar (5% acetic acid) dissolves calcium and magnesium deposits effectively for light to moderate staining:
On Faucets and Showerheads
- Soak a cloth in white vinegar, wrap it around the faucet or fixture, and secure with a rubber band or tape. Leave 1–2 hours, then wipe.
- For showerheads: fill a plastic bag with vinegar, slip it over the showerhead so the head is submerged, secure with an elastic band. Leave overnight. Remove and run hot water through the head to flush loosened deposits from the jets.
On Shower Glass and Doors
- Spray undiluted white vinegar on the glass, let sit 15 minutes, then scrub with a non-scratch scouring pad
- For heavy buildup: apply vinegar with a cloth, then sprinkle baking soda on the cloth and scrub — the mild abrasion helps
- Rinse and squeegee dry immediately after cleaning — leaving vinegar on the glass will etch it over time
When Vinegar Isn't Enough: CLR and Similar Products
For deposits that have been building for months or years, white vinegar may not have enough acid strength. CLR (Calcium, Lime & Rust Remover) is significantly more acidic and effective for severe deposits:
- Apply undiluted to the stain with a cloth, leave 2–5 minutes (don't exceed 5 minutes)
- Scrub and rinse thoroughly
- Keep off natural stone, grout, and painted surfaces — it can damage these
Important: Never Use Acid on These Surfaces
- Natural stone (marble, granite, travertine): acid etches and damages the surface permanently. Use pH-neutral cleaners on natural stone.
- Coloured or unsealed grout: acid strips colour and degrades unsealed grout
- Chrome plating: prolonged exposure to concentrated acids damages chrome — dilute and limit dwell time
Preventing Hard Water Buildup
- Squeegee shower walls and glass after every shower — this removes water before it can evaporate and leave deposits. It's the single most effective prevention measure.
- Wipe faucets dry after use — 10 seconds with a dry cloth prevents most fixture buildup
- Apply Rain-X (designed for car windows but works on shower glass) — it causes water to bead and roll off rather than evaporate on the glass
Hard water stain cleaning is part of every Maidless deep clean. Book at maidless.ca.