Ron,

Your question is a good one. It seems that there are many more products than impact studies. PUR, Lifestraw, solar pasteurization, are all interesting products but I have not seen any conclusive studies. I find that many of these products are appropriate for emergency settings, but we are kidding ourselves if we think that they can be substitutes for reconstruction and expansion of the water inrastucture throughout Haiti. here is a large conference that will be held this month in Petionville on access to water with Rotary, govenment reps, etc. Ill look into that for you.

Bryan