I think although there so many types of water filters, the most effective type is the reverse osmosis, because it can remove a wide range of different types of contaminants. I also have installed water, and it works great for me. I used the filtered water to drink, cook and wash. The following link may help you find the best reverse osmosis system on the market. The link is: http://wisemommy.net/best-reverse-osmosis-system-reviews/