Hello!
Great article, but I just have to ask. Where are you from, that need to filter your water? Rainwater in Norway is not recomended to use, even if you filter it. I work in an oil rig in the north sea, and we have our own system to make drinkable water out of sea water. Don't ask me how we are doing it, but it's getting really clean. I test the water everyday, and we also sent it into a lab onshore once a month