Drinking chlorinated tap water increases cancer risk 93% higher than not drinking chlorinated tap water. Bottled water is just as polluted as tap water and yet, we still sink so much money into it. Instead of drinking tap water or sinking your money into a dubious water source, the clear smart alternative to to invest in a water filtration system that will save you money and be better for your body. There’s a variety of water filters you can use as a smarter alternative. If you do the math of a water filtration system, you’re paying less than a penny per gallon.