As for metal pans...don't you know how to read? The EPA even made note of this problem...soft water that has no minerals and leaches inorganic minerals from metal pans when used for cooking, by the way, stainless steel contains nickel!
Really you need to read up on this information I am putting out there because it is obvious that you have no clue of the dangers you face by ingesting distilled water and especially using it for cooking purposes.
Stop using scare tactics telling people their tap water will kill them! Focus on what is important to your cause like telling people to fear the food they eat and focus on teaching them how to measure the quality of all their fruits & veggies.
You tell them acids will KILL them and then you feed them ACID water??? You make no sense!