Calcium deposits form when hard water evaporates and leaves mineral residue on the sink surface. These deposits appear as white, chalky stains or rough patches that can dull the stainless steel finish. Although the buildup may look stubborn, it can be removed safely with gentle, non-abrasive methods that protect the sink’s surface.
Begin by rinsing the sink with warm water to remove food particles and surface dirt.
Wipe the sink with a soft sponge to prepare the surface for mineral removal.
White vinegar is effective against calcium because of its natural acidity.
Soak a cloth or paper towel in vinegar and lay it directly over the calcium-stained areas.
Let it sit for 10–15 minutes to loosen the deposits.
After soaking, scrub the area lightly with a soft sponge, always following the stainless steel grain.
Sprinkle baking soda onto the damp surface.
Baking soda reacts gently with vinegar to help lift deeper mineral buildup.
Scrub with a sponge or soft brush in the direction of the grain.
Rinse with warm water to remove all residue.
Reapply vinegar to heavily affected areas and allow it to soak longer.
For thick deposits, repeat the vinegar and baking soda process until the minerals break down.
If vinegar is unavailable, apply lemon juice.
Its natural acidity also dissolves calcium effectively.
After cleaning, wipe the sink dry with a microfiber cloth.
Drying prevents new mineral deposits from forming and reveals any remaining stains.
Areas with heavy buildup may need a second round of treatment.
Apply a small amount of mineral oil or stainless steel polish to a clean cloth.
Buff the sink in the direction of the grain.
Polishing helps restore the stainless steel’s natural luster and adds a temporary protective layer.
Wipe the sink with a soft cloth to prevent mineral-heavy water from evaporating on the surface.
A softening device reduces mineral content in hard-water households.
Regular cleaning with vinegar or baking soda prevents deposits from hardening and becoming difficult to remove.
Do not use steel wool or harsh scrubbing pads, as they scratch stainless steel and make future buildup more likely.
Cleaning calcium deposits from a stainless steel sink is simple with the right techniques. Vinegar, baking soda, and gentle scrubbing effectively dissolve and lift mineral buildup without damaging the surface. Once the sink is polished and maintained regularly, it regains its smooth, bright appearance and stays protected against future deposits.
