[jamixoxo]

I knew that flouride was not good, but bad for the breasts possibly? There's another good reason to stick to my Tom's! Thanks for that! However, I don't filter my water, let alone use reverse osmosis. Will have to look into that now.

Yeah. It's not cheap but jeeeze. Drinking water is just getting less and less safe no matter what the government or our water companies try telling us.

The best I can find for initial investment seems to be around 150-200 dollars, at least as far as low cost is concerned. But none of those filter systems have very good reviews. It's looking like the least expensive GOOD filters have an initial investment of around 300 dollars.

And you have to replace at least 2 filter stages every so often as well.

I use an RODI system for my aquarium water. This outfit has good stuff:
http://www.bulkreefsupply.com/bulk-rever...stems.html

Drinking water systems run around $200, so yes they're expensive.
The other issue I have with these systems is that they waste a lot of water... A waste stream of water runs "down the drain" as the purified water runs into your container. I can't recall the ratio, but it's more waste water than purified. The waste water works fine for other purposes.
Cartridge replacement times depend on how bad your water is to begin with. I'm lucky - my water district has exceptional water quality (TDS < 15 ppm). The RODI output is < .5 ppm.

-j