The New York State Center for Clean Water Technology (CCWT) at Stony Brook University has made a series of critical discoveries regarding a new approach to protecting Long Island's drinking water, groundwater, and surface waters. Some of the discoveries involve the likely human carcinogen, 1,4-dioxane, which has been found at higher levels in Long Island drinking water than anywhere else in the U.S.
source https://phys.org/news/2021-03-approach-toxins-wastewater.html