"One teaspoon per gallon and boiling is still reccomended if possible for at least 12 minutes."
That sounds like a bit of overkill from what I've been able to learn, but better safe than sorry, I guess. Consuming that amount of chlorine bleach over a lengthy period of time (months or years) can't be healthy, but it's sure healthier in the short term than cholera, typhoid or e. coli.
That is meant for the short term. I got that information from a nuclear survival guide I have. The diseases and micro organisms in the floodwaters would be much more dangerous than the chlorine. Over a short time period (days or weeks) the health risk of consuming the bleach are practically nil compared to the dangers of say for example cholera. You have to figure that there will be a lot of undesirable (sewage, decomposing bodies of both human and animal ect) in the water. I don't know anout anyone else but I'd rather be saf(er) than sorry.
That sounds like a bit of overkill from what I've been able to learn, but better safe than sorry, I guess. Consuming that amount of chlorine bleach over a lengthy period of time (months or years) can't be healthy, but it's sure healthier in the short term than cholera, typhoid or e. coli.
Chlorine evaporates easily, and I suspect boiling the water will then cause most, if not all, to dissipate. I'd let the water set with the chlorine for about 10 minutes so it would get a chance to work, first, then boil.