From what I can find on line, this is generally only a problem with well water and NOT city water.

Something in this sunscreen leaves freakish orange stains on every piece of clothing it touches before you put it in the washing machine. Something in the formula reacts with something in the water and it RUINS clothes.

This apparently happens with several sunscreens but this is the worst one I have ever seen. I'm not sure if it's because it's the first spray sunscreen I've ever used but I'm switching back to the lotion variety right now.