I've been worried about having adequate water storage that we could easily use in an emergency, even for an extended period of time. We had a 55 gallon drum but it's not easy to empty and refill. We had talked about putting in a well but the expense is out of reach. I think found these sure water tank. It has two spigots that you can use to get water out and a big lid opening in the top for easy fill. This tank holds 525 gallons of water! We decided to order this and used Labor Day to fill it up! It took about 1 1/2 hours but we now have good drinkable water and can use it to water the garden in the summer and refill it yearly.
We are looking into similar tanks to harvest some water off of our roof for water gardening and other water uses in an emergency. Hopefully this plan will work instead of a well for usable water!