Partial list of dioxane sites (not just Superfund sites) follows...
Concentration of 1,4-Dioxane in Wells Sampled During 2002–2009 in the Vicinity of the Tucson International Airport Area Superfund Site, Arizona
"In 2002, the compound 1,4-dioxane was discovered in wells in the Tucson
Airport Remediation Project (TARP) area. Since then, 1,4-dioxane has
been detected throughout the TARP area, in some cases exceeding the U.S.
Environmental Protection Agency (USEPA) drinking water advisory level
of 3 µg/L."
Tucson Water breaks ground on new treatment plant
"In January 2011, the EPA issued a new health advisory for 1,4-dioxane of 0.35 parts per billion. That's lower than the previous advisory of 3.0 parts per billion.
With this new, lower advisory level, Tucson Water began planning and designing a new treatment facility that uses state-of-the-art technology to effectively remove 1,4-dioxane from water."
"In January 2011, the EPA issued a new health advisory for 1,4-dioxane of 0.35 parts per billion -- significantly lower than the previous advisory of 3.0 parts per billion. With this new, lower advisory level, Tucson Water began planning and designing a new treatment facility that uses state-of-the-art technology to effectively remove 1,4-dioxane from water. Construction of this Advanced Oxidation Process (AOP) Water Treatment Facility started in July 2012. The new AOP Water Treatment Plant will work in conjunction with the adjacent TARP facility to produce up to 8 million gallons of purified water a day."
DHEC Reveals Cannons Campground Well Results
"DHEC also said five wells further from the plant tested positive for
very low levels of the chemical 1,4-dioxane. The chemical is a byproduct
of the polyester manufacturing process and shows up in groundwater
beneath the plant. But DHEC says it is not sure if the dioxane in the
wells came from the plant."
Bedrock 1,4-Dioxane Concentrations Map Saprolite 1,4-Dioxane Concentrations Expanded Receptor Survey
Shadow Of Sickness Part 3 - Company Chemist Responds to Allegations
Shadow of Sickness Part 4 - Contaminated Groundwater Creeps Into Community
Shadow Of Sickness Part 5 - DHEC Questions Company's Handling of Groundwater Cleanup
1,4-Dioxane In Shallow Groundwater Lowry Landfill Superfund Site
"Concentrations measured in Murphy Creek range from non-detect up to 79 ug/L within the Denver Arapahoe Disposal Site (DADS) property north of the Lowry Landfill, and range from non-detect up to 10 ug/L north of the DADS property. Colorado does not have a 1,4-dioxane standard for surface water."
CLLEAN - Citizens For Lowry Landfill Environmental Action Now
(more sites later)