11 of 11 people found the following review helpful
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This review is from: WATER PURIFICATION FILTER BOTTLE - REMOVES CONTAMINANTS BY 99.9% - DEVELOPED BY THE AMERICAN SPACE PROGRAM "NASA TECHNOLOGY"
took the plunge (as it were) whilst walking dog in ex-sand quarry area in hot weather so had drunk all tap water. amazingly it works. water not only came out almost pure but tasted fine as well. very good product