The place is Winco foods. There are two of them and water is 64 cents per gallon. Both Wincos are convenient to 395 and located at opposite ends of Reno. To get there from I-80, go to the 395 interchange and head north or south. North, get off on Exit 69 and turn right. Winco will be on your right. South, go to exit 60, turn right and Winco will be on your right.
Don't worry, they have lots of water.
Thanks to Addis, I had more free time.