This is such a good idea!
All Day Saturday, August 6, 2016, you will be able to go into any Firehouse Subs and receive a FREE Medium Sub. Here’s the catch, you have to bring a 24 pk of unopened water to your local Firehouse Sub location. In return, you’ll receive a free medium sub! Once they receive the water they will then give the cases to the local Fire and Police Departments in need. Limit one sub per person, per case of water. For more information and restaurant locations head over here to FirehouseSubs.com.
Here are some of the deals I have found for cheap water.
Kroger has their brand 24pk of water bottles for only $1.99.
Aldi also has the PurAqua brand 24pk water bottles for $1.99.