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<br /> <br />City of St. Anthony Village <br />Water FAQ <br /> <br />In February 2015, the Minnesota Department of Health (MDH) notified the City of New Brighton that the <br />contaminant, 1,4-dioxane (dioxane), had been detected in trace amounts in some of their City’s drinking <br />water wells. Since being notified of dioxane in New Brighton’s water supply in 2015, the City of St. <br />Anthony has been testing its three wells monthly in addition to the MDH’s periodic testing of the City’s <br />wells. That testing continues to show low levels of dioxane. <br />The Minnesota Department of Health has advised that dioxane levels above 1 part per billion (ppb) <br />present a minimal health risk. The amounts of dioxane found in St. Anthony’s water are currently below <br />the MDH’s recommended limits for dioxane in drinking water. <br />Is my water safe to drink? <br />Yes. The water is below the lowest existing health advisory level and is safe for all uses. It is safe for <br />drinking, bathing, washing clothing and preparing infant formula. <br />Where does the City of St. Anthony Village’s water come from? <br />The City of St. Anthony Village pumps groundwater from three municipal wells. The city’s water is drawn <br />from the Prairie du Chien and Jordan Aquifers. <br />What is 1,4-dioxane? <br />Dioxane is an industrial chemical used to stabilize chlorinated solvents, such as trichloroethane (TCA) <br />and trichloroethylene (TCE). These are both solvents that were used during operations at the Twin Cities <br />Army Ammunition Plant (TCAAP) in Arden Hills. Dioxane can also be found in some consumer products, <br />including shampoos. Dioxane should not be confused with dioxin, a known environmental pollutant found <br />in some foods. <br />How was dioxane found in the City of St. Anthony Village’s water supply? <br />The Minnesota Department of Health (MDH) tested the City of St. Anthony Village’s water supply and <br />detected trace amounts of dioxane. The current concentration of dioxane falls below the MDH advisory <br />level of 1 part per billion (ppb). Since we were made aware of New Brighton’s dioxane issue in February <br />2015, St. Anthony has been conducting monthly testing. <br />What are the health guidelines surrounding dioxane? <br />No regulatory limit on the amount of dioxane permitted in drinking water has been set under the Federal <br />Safe Drinking Water Act. However, the Minnesota Department of Health (MDH) has set an advisory limit <br />of 1 part per billion (ppb). <br />What is the City of St. Anthony Village doing to control dioxane levels below 1 part per billion <br />(ppb)? <br />With assistance from the Army, the City of St. Anthony is moving forward in designing an addition to our <br />water treatment facility to ensure the 1,4 dioxane stays below the 1 part per billion (ppb) threshold. The <br />City is also communicating regularly with the MDH, and other surrounding municipalities that pump water <br />from this aquifer. <br />Is this contamination caused by operations at the Twin Cities Army Ammunition Plant (TCAAP)? <br />TCAAP is the likely source of the contamination. <br />(over)