What is 1,4-dioxane?
1,4-Dioxane is a man-made compound. It was primarily used as an industrial solvent or solvent stabilizer in the 1970’s and 1980’s and widespread use has reduced. Today, 1,4-dioxane is used mostly as a solvent in paints, varnishes, resins, lacquers, and can be found in some cosmetics, deodorants, toothpaste and soaps. 1,4-Dioxane has been classified by the EPA as likely to be carcinogenic to humans at certain levels.

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1. Is my drinking water safe?
2. Is this substance in my water?
3. What is a part per billion?
4. How did the District find out that 1,4-dioxane was in the District’s groundwater sources?
5. What is 1,4-dioxane?
6. What level of 1,4-dioxane is considered safe in drinking water?
7. What is the District doing now that it knows this substance is present in the water?
8. Does the District know the source of 1,4-dioxane?
9. How are the State and EPA working to address the source of 1,4-Dioxane in the District's drinking water supply?
10. How will the District keep customers informed about the occurrences of 1,4-Dioxane?
11. How can I contact the District to get more information on this topic?