This report of the National Association of Local Boards of Health details how CAFOs, large-scale industrial farms that raise animals for meat, dairy and eggs, pollute the water and air. The 1972 Clean Water Act identified CAFOs as potential air and water pollutants, yet little has been done to mitigate their danger. Animals raised in CAFOs produce an enormous amount of manure — between 3 and 20 times the amount of manure than people produce. In the U.S., laws require human waste to be treated in sewage plants. But thanks to Big Ag lobbyists and powerful politicians from Big Ag states, the EPA (the U.S. government agency responsible for keeping our air and water safe), does not require livestock waste to be treated. EPA rejects regulating CAFOs.