There is a $1/1 Sparkling Mountain Spring Water (1 ltr) coupon on Coupons.com (use your local zip code to either get Arrowhead, Ozarka, Ice Mountain, Poland Spring or Deer Park)
Click on the beverages link on the left hand side of the screen.
http://www.dansdeals.com/go/coupons/Target is having a sale this week for these waters at .69 but it is normally .89 so it will be free regardless!
Please post areas and chain stores where you have found these different nestle brands
If you are in an area where Ice Mountain 1L are available, please PM me.