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Q&A How can I tell when water is contaminated with industrial chemicals without any special equipment?

With fracking, chemical spills, and all sorts of environmental nonsense on the rise, water quality can be compromised in some areas. How can I tell when it's not safe to consume even after filterin...

1 answer  ·  posted 11y ago by tM --‭  ·  last activity 7y ago by System‭

Question water-purification