Manure is one source triggering cancer-causing chemicals in drinking water for 122 million

At home, people can use EWG’s updated Tap Water Database to find out what contaminants are in their drinking water. It describes which home water filters are best to use for removing disinfection byproducts, based on the contaminants found in a particular system. Activated carbon and reverse osmosis home water filtration systems are usually the most successful.