Emergency storage of water, advice needed please.

Hi all

Just a thought about crisis problems or even longterm bushcraft, how long is it deemed safe to store water in sealed containers?, would you need to drop some purifying tabs in then seal it or maybe even boiled first. Few drops of un scented bleach maybe?

My problem is, I read this article http://www.equipped.org/72hourkit.htm, you see it states "the standard is 5 1/4% sodium hypochlorite", if I look at a cheap and more expensive brand of bleach in my house eg,

londis original thick bleach less than 5% nonionic surfactant and antonic surfactant, disinfectant and perfume.

Jeyes new parazone, less than 5% antonic surfactant.

Does anyone know of a brand in the uk that is safe to use?


Any experts out there who can advise...