(AP) — The mayor of Toledo, Ohio, is telling residents that more tests must be done to ensure toxins are out of the city's water supply.
Mayor D. Michael Collins says Sunday that the 400,000 people in the region need to avoid drinking tap water for a second day. But he says samples show the level of toxins appears to have decreased.
Toledo officials issued the warning early Saturday after tests revealed the presence of a toxin possibly from algae on Lake Erie.
Ohio's Environmental Protection Agency is trying to figure out what caused a sudden spike in the toxins.
Gov. John Kasich has ordered the state's National Guard to deliver pallets of bottled water, water purification systems and meals ready to eat to residents in Lucas, Wood and Fulton counties.