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Minnesota Department of Health <br />Recommended Health Risk Limit <br />MDH recommends keeping exposures at or below 1 <br />ppb over a lifetime (70 years) <br />1 additional case of cancer in a population of 100,000 <br /> Cancer risk is much lower if consumed for only a few <br />days, a few months, or few years. <br />Washing dishes, bathing, showering, or watering the <br />lawn do not pose increased risk. <br /> <br />1,4-Dioxane Levels <br />Detected in City Wells <br />Well No. 3 – 0.31-0.37 ppb <br />Well No. 4 – 0.90-1.50 ppb <br />Well No. 5 – 0.57-0.68 ppb <br />Finish Water – 0.68-0.95 ppb <br /> <br />6