Dan,

We were never very good at catching rain water. Just not much of it in the Sea of Cortez.

But we were kinda worried about taking on dock water from a few of the marinas. So we got a system that is used in many restaurants in Mexico. It was just under US $200.00 and we have used it ever since. As a matter of fact, our water system here in Az. where we are staying had a warning a few months back and we even used it here in the USA!!! Yoy can see it in a short Youtube I posted at; http://www.youtube.com/watch?v=9JXvLxdflK0&feature=share

We looked at the under sink filters, but the big one named after a bird was US $500.00+ WOW!!!! What we went with was not even close to that and still way under the Doulton unit. I also posted a very short Youtube about it at ; http://youtu.be/4JO36LSGdN8

And as you said, we never suffered ANY problems.

Nice article you pointed to. No matter what system people decide on, we think it's a very good idea to take a filter system!!

Greg