I ASKED STEPHEN GREEN ABOUT THIS AND HE SAID, “WATER?” Should You Filter Your Water? “Using the right water filter can help further reduce pollutants like lead from old water pipes, pesticide runoff in rural areas and byproducts of chemicals like chlorine that are used to treat drinking water. Radon, arsenic and nitrates are common pollutants in drinking water, and trace amounts of drugs including antibiotics and hormones have also been found. Certain filters may help remove these impurities as well.”