Water: Distilled vs purified vs everything else

[John]

I wrote it so you can attribute it to me. I'm actually a Doctor of Chemistry and my interests center on pollution/water pollution. For a published article then please credit me as John P. Clare or Dr. John P. Clare.

Given what Johnny has said, as I suspected there are much looser standards for Spring Water in the US.

[Moonspyder]

So where does rain water fall in for those who do not want to buy water? I know acid
rain exists, and rain water has been describes as sort of a distillation process. I suppose alot of air born matter besides the pollutants that make acid rain ends up in rain water.

[John]

Rain water purity really depends on where you live but in most industrialised nations it certainly does not compare to distilled or R/O water in terms of purity.