I've searched the threads and found a few things to try, but someone noted to ask in the detailing section.

I went out of town this past weekend and left my car parked in a spot where the complex sprinkler system sprayed it. Now I have little water spots on my hood and front fender. I'm assuming it's calcium deposits...

I washed the car the day after it got sprayed, but no luck, spots were still there. Tried Meguiar's detailing spray and a small spot to wax, but that didn't help either.

Any other suggestions from the pro's out there?

 

i hear vinegar and water works well

 

heard that as well, but vinegar is acidic and i'm scared! j/k.
so the process is to have a mixture of both and be sure to have plenty of water on hand to rinse off the excess, then apply wax immediately.

does that sound right?

 

50/50 mix of vinegar and water should do the trick. If not, you'll need to try a claybar next. Considering the short time the hard water has been on the car, it shouldn't be that hard to remove. If that still won't come off, then you're looking at polishing it.

 

will do. I have both at home, so i'll give em' both a shot tonight. thanks for the help.
hopefully it will be easier than removing the tree sap with boiling water :/

 

Tried this on my 03 Brickyard after reading this thread. The 50/50 worked REALLY well at getting the majority of them off the hood (there's a ton, but can only be seen in certain lighting), and the car will be getting a full detail (clay, polish, wax, etc) for Christmas, so I have no doubt that'll take off the leftovers. Good thread, hope it works for you too.

 

For the glass I would use the Glass Science Glass Scrub, which does a great job of deep cleaning the exterior glass and removing water marks. To remove the etchings in the paint there are only two options that I know of. The Chemical Guys Water Spot Remover can be used to remove light etchings that are hard to see or feel. The more traditional option is to polish that area, starting from a less aggressive polish to a stronger one. I would suggest starting with medium pressure and a polish like the Meguiar's M205 and move up to the M105 if need be. If that doesn't work you may need the extra power of a buffer to help work those polishes in. With the the help of a buffer you can remove about 99% of the surface imperfections from water marks. If you have any other questions please don't hesitate to ask.


Greg @ DI

 

since mine was taken care of quickly without letting it sit for more than a day, the clay bar seemed to do its job. I did it late at night, so it was hard to see if it worked 100% or not, but it seems to have.

before I started, I really couldn't see the spots anymore, i'm thinking the car wash lights brought them out more so than in regular daylight.

 

About a month ago i had the same problem with water spots on the hood and fender, ordered M205 and M105, from detailed Image per their request. M105 worked like a charm hardly any work was needed to get the water spots off, and i applied it by hand. Followed it up with a nice wax job, and they car is back to being perfect, also got rid of minor blemishes throughout the whole car. I definitely recommend trying their products.

 

I used a clay bar and detail sprayed it often. Worked great.