As I wrote before, my triple osmosis unit under the sink cleans out 99% of the contaminants in the water. I had it tested. I had some bottled water tested, and it came out to 100ppm. The only water that tastes really pure to me is Sparkletts, and Dasani. It's amazing how bad water from the tap tastes when you're used to pure stuff. I only give purified water to my snake, my dogs/cat, and myself.