What would you do if you suddenly found that water was no longer flowing to your home and wouldn’t be for some time?
Hopefully, you have stored some water to last your family for a few days at least (two gallons per day, per person). But if not, you need to look around your home for potential sources of water for the short-term while you make plans to deal with the situation long-term.
There are actually more sources of water in the home than you might think. If the public water system has not been contaminated, you can drain much of the water from your plumbing system.
About 30 to 60 gallons can be found in your water heater (depending on the size of the water heater). There is a drain at the bottom that allows you to access the water. Turn the water heater off, and allow the water in it to cool. Then drain it into clean containers. Sometimes, the first gallon or two will contain rust or sediment that has settled at the bottom. Discard it, if necessary. Better yet, filter it through coffee filters, rags or towels.
If there is a chance the public system was contaminated, treat the water with chlorine, iodine or water-purification tablets, or boil it. Otherwise, it should be fine to drink right out of the tank.
There is also clean water in the storage tank (not the bowl) of your toilets. Treat the storage-tank water before using it.
If you have an aquarium, it contains water you can use, once it has been treated.
Remember, a survival situation is no time to be squeamish. You have to do the things necessary to survive. Using water from your home will buy you a little time to find a more permanent source of water if the catastrophe is going to be a long-term situation.