Things You’ll Need
Pour undiluted white vinegar into a spray bottle.
Spray the vinegar onto the affected area.
Allow the vinegar to sit on the water spots for 3 to 5 minutes.
Wipe the area with a soft, clean cloth to remove the stain. Repeat if necessary until the spots are gone.
Wipe the area with a clean damp cloth to rinse it.
Wipe the area again with a dry, clean lint-free cloth to eliminate any excess moisture.
White glass table image by Oleg Kulakov from Fotolia.com
Article originally found on: http://www.ehow.com/how_5997559_do-spots-glass-table-tops_.html