"If you don't have a filter - you become the filter." explains Dr. Mercola. "ANY filter is better than no filter."
Our municipal water supply is full of chlorine, heavy metals, contaminants of all kinds, and in most cases, fluoride. You need a high quality filter of some kind as part of a long term plan, because it's not just the water you drink that impacts your body- it's the water you bathe and shower in as well.
If you take a shower for 10 minutes, you are absorbing the equivalent of drinking 1 gallon of that water.
Dr. Mercola offers valuable advice on how to reduce the impact of the harmful substances even without a filter.