How to Remove Water Stains From Cement

Water stains form on cement when it is exposed to a continuous source of moisture, such as a leaky faucet, a flower pot, damp laundry or a leaky seal around a plumbing fixture. These stains result from a buildup of minerals found in most untreated water supplies. Mineral stains are difficult to remove using simple soap-and-water techniques but, luckily, there are two easily available options.

Step 1

Apply undiluted white vinegar to the entire mineral deposit you are attempting to remove and allow the stain to soak for approximately 20 minutes. Apply a second layer of white vinegar and scrub the stain with a stiff-bristled scrubbing brush vigorously for at least two minutes.

Step 2

Rinse the area clean with fresh, cold water and dab it clean with a dry cloth. Allow the surface to air-dry. If you can still see a light mineral deposit ring, repeat these first two steps before continuing with Step 3.

Step 3

Apply a generous amount of Lime-Away, as a last resort, to the mineral deposit if two attempts with the vinegar was unable to clear the stain. Lime-Away acts in a similar fashion to hydrochloric acid but with less danger. Allow the chemical cleaner to act on the stain for no longer than five minutes.

Step 4

Put on a pair of vinyl gloves to protect your skin from coming into contact with the Lime-Away cleaner. Scrub the stain vigorously for about one minute, pouring cold water onto the stain while scrubbing to dilute the Lime-Away chemical. This dilution is necessary because Lime-Away itself can stain a surface if not diluted and rinsed off. Rinse the area well with water. Since Lime-Away can stain and discolor cloth, soak up the diluted Lime-Away with paper towels and discard according to directions on the bottle's label. Your stain should now be completely removed.