The heavy rainfall has increased the risk of sewage overflows in Milwaukee, particularly in areas like Lincoln Creek. If overflows occur, untreated sewage could enter the environment, posing health and environmental risks. Over 12,000 residents in southeastern Wisconsin are already without power due to the storms, compounding the challenges. The MMSD's alert is a proactive measure to mitigate these risks by reducing the volume of water entering the sewer system during this critical period.