I got 2 55 gallon drums supposed to be used, but safe for water storage when cleaned. Previously used for food-grade storage (probably soda syrup).
I figure 2 gallons per day per person for drinking, cooking and sanitation. 1 gallon per day for the animals (2 dogs and 2 cats). By including the 40 gallons in the water heater, that buys us about 30 days of "wait & see" time to ride things out. Not perfect but probably better than most sheeple except maybe those with swimming pools. Now there's a dual use facility!