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Rain water can be very close to RO or distilled. Rain is usually triggered by a solid particle (dust) and or atmospheric compression. Then as it falls it's collecting other particles from the air. Then again picking up particles from the collector. I would have it tested not only for safety to identify potential contamniates but also to establish your ...


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You probably want to get the water tested to ensure it is fit for human consumption. The rain itself should be fine, but the roof surface and storage vessels may not made of food grade/food safe materials. Here is a list of water testing labs from the NZ MoH: http://www.drinkingwater.esr.cri.nz/mohlabs/labsfornzregionalpha.asp?NZRegion=NZNZ01 For Auckland ...


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If the air is really clean, you have this part covered. But is it? It is not only about how clean it is where you live - that is, in your area, near ground level. Is it clean up to 2000 feet? Was it clean where water evaporated? What was in the air on the way? Start from reading about acid rains. And there is much more about this topic. Too much to put here. ...



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