After a record-setting Midwestern rainstorm that damaged thousands of homes and businesses, Stefanie Johnson’s farmhouse in Blandinsville, Illinois, didn’t have safe drinking water for nearly two months. Flood water poured into her well, turning the water a muddy brown and forcing Johnson, her husband and their two young children to use store-bought supplies. Even after sediment cleared, testing found bacteria — including E. coli, which can cause diarrhea. The family boiled water for drinking and cooking. The YMCA was a refuge for showers.