Residents and businesses that did not use their water at all -- not even for showering or washing hands , both of which were allowed under the ban -- will need to run their water first to help flush their systems , Collins said , but `` if you 've been using water all along , just go on with life . '' NEW : `` The families can return to normal life , '' Toledo mayor says of water ban . By Associated Press and Reuters TV in Mexico City MEXICO CITY -- Microcystin , a toxin caused by algae blooms , found in the water system .
NEW : `` The families can return to normal life , '' Toledo mayor says of water ban . By Associated Press and Reuters TV in Mexico City MEXICO CITY -- Microcystin , a toxin caused by algae blooms , found in the water system .