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Frequently, wells provide a healthier standard of water than the rivers and streams from which most early communities derive their water supply. The biggest cause of contamination of water supplies was and still is from impurities finding their way into surface water, which easily runs into streams. Well water, on the other hand usually has the benefit of being filtered through the ground - even two meters is a significant filter. The depth of the well is not so important as the level of the water table. Many wells are in effect an underground reservoir collecting water from the surrounding rocks (make a hole, and it fills with water) - they are not usually much affected by surface water contamination. Obviously, an underwater stream would be nice - these often manifest themselves in springs rather than wells. Many of the springs in Europe have their source in watersheads many miles away and can take up to six months before reaching the spring (nice exploited nowadays by bottle water suppliers!). LevanMaria About how healthy well water was: in the ground there are two layers of water. The first, which is not too deep(down to two metters)in unhealthy, because it gathers all the fluids that are on the groung (including those from compost heaps). If the well is deeper, it reached something like a underground spring or river, than it's ok to drink the water. Levan Hey - never mind the THEN! In two of my recent homes the primary source of water was from a well - albeit fed to a header tank using an electric pump.
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