Ok I have had a good lengthy debate with a relative about drinking water and what should be used and what not to use. He has a small pond that is triangular in shape. It is your typical blocked off ''holler'' type pond. He says that with a filter he should be able to drink from it and use it as a source of water for his house he is going to build. The pond is about 1/2 acre and is about ten to twelve foot deep. There are no homes within a 1/2 mile or so and no animals use this part of his land ie cattle etc. The water is very clear looking being able to see bottom in about five ft of water. The pond is about eight years old. What say you? Can he use it for a source of water? And if so what type precautions should he use as far as minimal filtering etc? He argues that our local ''city water'' folks use lake water for use to drink. But we all know they treat it etc etc. Also he says that as kids we swam daily in ponds ingesting tons of the liquid that cows regularly stood in etc and we never had any ailments from it. So for him a filter is all he needs. I disagree. How about you?