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Jun 26, 2021 at 2:45 comment added Mazura Salt water, not contaminated water, but if it is it's better than nothing I guess. "In the 1890's the public health experts condemned them as a potential source for diseases like typhoid. They found that the water, while clear, was not clean as it didn't filter out germs. After this, the use of the stone as a water filter system was not as popular." - ffmv.org.au
Apr 17, 2016 at 5:54 history edited Chas CC BY-SA 3.0
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Apr 17, 2016 at 5:52 review First posts
Apr 17, 2016 at 5:59
Apr 17, 2016 at 5:49 history answered Chas CC BY-SA 3.0