Interestingly enough the new guidelines (from the pamphlet All Is Safely Gathered In: Family Home Storage published by the LDS church) don't mention a specific amount of water to store, but two weeks is probably not a bad goal to start with.
- Gradually build a small supply of food that is part of your normal, daily diet until it is sufficient for three months.
- Store drinking water.
- Establish a financial reserve by setting aside a little money each week, and gradually increase it to a reasonable amount.
- Once families have achieved the first three objectives, they are counseled to expand their efforts, as circumstances allow, into a supply of long-term basic foods such as grains, legumes, and other staples.
Here are some hints about water storage that I've kept in my Preparedness files at home.
- Pre-bottled water should be kept in the sealed bottle and used or discarded by the expiration date. I don't think I'd go for the discard option you could always use it for washing.
- Water can be stored in commercial water containers.
- Clean all containers before use. Do not reuse milk cartons for water (the will start to leak after a few years – it's NOT fun). Soda pop bottle are OK.
- Change water every six months if you have filled the containers yourself.
- Treated water from your faucet does not need drops of bleach added to purify it.**
- If you are using well water, add non-scented bleach. Eight drops of water per gallon or ½ teaspoon of bleach to 5 gallons of water.
- If you are storing water on a concrete floor, put blocks of wood or cardboard under your containers.
UPDATE 6/21/12 - because it's time to change out my water and I couldn't remember what to do!This site was helpful too... http://www.bae.ncsu.edu/programs/extension/publicat/wqwm/emergwatersuppl.html and another reason not to use milk containers is the cleanliness factor - you don't want little bits of milk residue growing in your water supply.**According to this website: http://www.nationalterroralert.com/safewater/ you might still want to add the bleach - I think I will - better safe than sorry!