Pure water?

[Leisurely]

I am certainly no expert but it seems to me that if contaminates accumulate on the coils then these same contaminates are surely in the air and come down with the rain. So my thought is that if the condensation from the A/C is contaminated then the rain water is also contaminated.

[flhiker]

Originally Posted by Leisurely

I am certainly no expert but it seems to me that if contaminates accumulate on the coils then these same contaminates are surely in the air and come down with the rain. So my thought is that if the condensation from the A/C is contaminated then the rain water is also contaminated.

How would you test this water to find out what contaminates are in there? I don't want to use any chids as a guinea pig.