Egon, On our two failed expeditions into the Chocolate Mountains to rediscover the Lost Dutchman's Mine we were very cautious about our water sources as some of the water there is high in arsenic. We were using a couple different types of water purifiation tablets which killed biologics but did not remove any minerals. Halezone and Iodine were the "standard" fare then. Now we have a pump equipped with a microbiologic filter that we cary in our camper for just in case. What the world needs is a back pack sized RO unit.

[img]/forums/images/icons/smile.gif[/img] Pat [img]/forums/images/icons/smile.gif[/img]