Toxic Pollutants: Eleven percent of Maine's private wells have arsenic levels above the state standard of 10 parts per billion, according to a random sample of about 400 wells in 2001. That means roughly 75,000 Mainers drink water with elevated arsenic levels. Maine Bureau of Health director Dr. Dora Anne Mills said that while 56 percent of Maine's population gets its drinking water from private wells, only half of the well owners test them for arsenic. Well Water Quality.
