Water spots are what get left behind when hard water that contains minerals (e.g. calcium and magnesium) is left to dry on a glass surface rather than being dried off with a cloth or squeegee. As the water dries and evaporates, the minerals get left behind on your window or glass panels.
Windows and glass with water spots appear grimy and dirty. Affected windows will look dusty, as if they have a film that is patterned or dotted with whitish circles, depending on the source of the water. You can use water spot removal via https://wd40.in/wd-40-uses-at-home/water-spot-removal-from-mirrors/.
To deal with your existing water spots, check out our top 5 suggestions for removing water spots from windows:
This is a classic window cleaning trick, no matter what type of marks you’re dealing with. Simply mix a solution of equal parts water and white distilled vinegar.
Spray onto windows, thoroughly saturating the more problematic areas. Wait a full two minutes, then use a small, rough towel that has also been saturated with the vinegar and water solution to gently scrub the glass. Dry with a soft cloth, paper towel, or even newspaper. Repeat this process as necessary until all the watermarks are gone.
You can also use a higher concentration of vinegar if the water spots are severe.
Lemons also work to remove water spots, as the citric acid easily neutralizes the hard minerals. To use the lemon method of removing water spots, simply slice a lemon in half, then rub it on the glass using a fair bit of pressure.
Dry off the lemon juice left with a soft cloth or paper towel (no need to rinse). For the most streak-free shine possible, finish off with just a touch of glass cleaner.
You can also use lemon or orange essential oil to remove water spots if you don’t have fresh lemons handy. Just mix several drops in some water and apply as a glass cleaner. This solution has the added benefit of the residual oil preventing (repelling) future water sports from forming.