TOLEDO, Ohio (AP) -- Ohio's fourth-largest city has warned residents not to consume its water after tests revealed the presence of a toxin possibly related to algae on Lake Erie.
Toledo issued the warning early Saturday. It said tests at one treatment plant returned two sample readings for microsystin above the standard for consumption.
The city warned against boiling because it will only increase the toxin's concentration. The advisory covers city residents and those in Lucas County served by the city's water supply.
The city's advisory says Lake Erie may have been affected by a bloom of harmful algae that produces the toxin. Consuming the tainted water could result in vomiting, diarrhea and other problems.
Toledo is home to about 280,000 people. The city says more tests are being run.
Locally, East Fork Lake in Clermont County had its own advisory against the elderly, young and those suffering from weakened immune systems from swimming there when a algae bloom produced similar toxins.
The ban there was eventually lifted when the bloom subsided.