for you personally ... the water purification tablets may work. it just takes some personal discipline.

however it has been my experience that a LOT of normal people do not like the taste of water after it has been purified by iodine. So they just won't drink it. Hence they become dehydrated, and can get sick. we are spoiled in America by the existence of vast quantities of good-tasting water (often in bottled form). Once this becomes unavailable, people often "fall apart". This is a real problem if you plan on helping your family to survive in a long-term disaster. You would think that the logical human reaction would be "OK ... I understand I need to drink, so I will do what's necessary to avoid getting dehydrated". BUT that's not actually what happens in reality. People don't understand the seriousness of dehydration, and once they get into that state - they start going downhill. It can be a serious problem.

Experiment with ways to take the taste out.
Simple additives (like Tang orange juice powder) are not a good answer.
But keep looking!

Pete2