From David in Israel on Sanitation
The sanitation problem may be one of the worst aspects of the tragedy in New Orleans. Polluted water is full of parasites which once ingested inhabit the digestive tract causing dysentery or even cross over into other organ systems. In a flooded world people are dying of dehydration due to vomiting and diarrhea. The best way to combat bad water is with a large gravity filtration system like the Big Berkey [British Berkefeld ceramic water filter, in a stainless steel housing, made in England] or its plastic cousin filter for a whole family with little effort. Hand filters are good …