If you don’t want to store your own tap water, you can store water in one of the following ways:
Buy commercially bottled water in cases. Follow the expiration dates on the bottles.
Commercial water service companies, such as Culligan, sell water bottled in 5-gallon containers, which they deliver to businesses and homes. Culligan recommends a storage life of 2 years. The company delivers new bottles and takes away the old, making this a great idea for water storage if you live in an apartment or condo, or are elderly. Call your local company for cost of deposit and delivery.