The Suffolk County Water Authority installed filtration systems at two wells in Kings Park to remove 1,4-dioxane, a likely carcinogen, from the drinking water supply, officials said.

The water authority installed two new advanced oxidation processing systems at a well field it operates on Old Dock Road. The $5 million project included the cost of the two advanced oxidation processing systems as well as a building to house them.

The Environmental Protection Agency's website lists 1,4-dioxane as a “likely human carcinogen” that has been found in groundwater at sites across the country.

The water authority used $900,000 in state grants from the New York Environmental Facilities Corp. to pay for both systems, according to a news release.

Dan Dubois, an authority spokesman, said the work

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