“Abstract – 1,4-dioxane is an emerging contaminant of concern that is being monitored in drinking water throughout the United States as part of the US Environmental Protection Agency’s Third Unregulated Contaminant Monitoring Rule. In September 2015, the North Carolina Division of Water Resources completed the first year of a study designed to examine ambient concentrations and identify potential sources of 1,4-dioxane in major surface waters of the Cape Fear River basin. Results of the 1-year study indicated four primary areas of elevated 1,4-dioxane in the upper portion of the Cape Fear River basin. Three of these “hot spots”are located immediately downstream of domestic wastewater treatment facilities, indicating that these facilities are conduits for 1,4-dioxanefrom domestic and industrial sources, into surface water. The fourth is located along a smaller stream, and potential local sources will be explored during the next phase of the Division’s study. Because 1,4-dioxane is difficult to treat and remove, options for abatement and remediation of existing 1,4-dioxane inputs will also be explored in the next phase of the study…”
- See also via Washington Post – In U.S. drinking water, many chemicals are regulated — but many aren’t
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