THE SHORT ANSWER
Water spots can be surface deposits or marks that have affected the finish. A wash may remove loose residue, but persistent spots need assessment. Avoid aggressive chemicals or abrasion without confirming compatibility with the paint or coating.
Look at where the spotting appears.
A pattern on one side of the car may suggest repeated exposure, such as nearby irrigation. Mention when you first noticed the marks and whether they remain after a wash. That history helps a professional understand the concern without promising a result from a photo alone.
Do not confuse removal with correction.
Removing a deposit is different from refining a mark in the finish. More aggressive work can change the surface and should be assessed separately. A standard exterior wash should not be described as guaranteed water-spot removal.
Avoid experiments on a hot panel.
Household mixtures and abrasive pads can create new damage. Follow the vehicle and coating manufacturer’s care instructions. If the surface is unfamiliar or has an aftermarket finish, stop and ask before trying a stronger product.
Reduce repeat exposure where practical.
Changing the parking position away from sprinklers can be more useful than repeatedly treating the same marks. Discuss appropriate drying and care practices for your finish. No protective product makes a vehicle immune to every deposit.