Research conducted by the Environmental Working Group (EWG) revealed that hundreds of contaminants are present in U.S. tap water. To be exact, EWG revealed that 267 out of 500 contaminants were detected during tests conducted by more than 48,000 utilities companies across 50 states. This shows that no matter where you live in the U.S., your tap water is very likely contaminated.
Of the 267 contaminants found,
93 were linked to an increased risk of cancer,
78 were associated with brain and nervous system damage,
63 were connected to developmental harm in children or fetuses,
38 were contaminants that could cause fertility issues; and
45 were endocrine disruptors.