The warning states: “Please be aware that due to recent or predicted weather events, the combined sewer overflows operated by the City of New Castle may be discharging currently, or within the next twenty-four hours. Sewage or waste water may be present in the Big Blue River and its tributaries: Castle Run, Mound Run, Baker Branch, and Elliott Run, downstream of CSO discharges during and for several days after rainfall or snow melts. People who swim in, wade in, or ingest these waters may become ill. Physical contact with these streams should be avoided during this time period. For information please contact the New Castle…