Water etching, also known as chemical etching, is when hard water spots mix with other contaminants on the paint and then evaporate, leaving behind those frustrating water marks.
Depending on the severity of the water etching, it may be very easy to remove, or it could be very difficult. In some situations, the vehicle will need multi stage wet sanding and paint correction to completely remove the water etching. If the vehicle is older and/or has little clear coat left, the water etched panel may need to be fully repainted.
It’s important to remove water spotting early before it etches into your car’s paint and glass. Adding protection like a paint sealant or ceramic coating is great at preventing permanent water etching.