CASE STUDY IN IOWA: Safe Chemical Handling for Public Water Supply More than 2.5 million people in Iowa are served by public water supplies. According to the annual DNR compliance report, the 2,000 regulated water public supplies, have seen significant improvement in compliance with new rules which require systems to measure the byproducts of the disinfection process. The byproducts can have an effect on public health especially pregnant women, the elderly, children and people with a weakened immune system. These rules were put in place as part of new federal regulations which created more requirements or water system operators and state oversight staff. “Overall, the public water supplies in Iowa are serving safe water,” according to Dennis Alt, supervisor of the D

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