TOLEDO, Ohio (AP) — An Ohio mayor says officials won't decide whether the Lake Erie water supply serving about 400,000 residents in the Toledo area is safe to drink until they receive all the test results, possibly by Sunday morning.

Toledo Mayor D. Michael Collins said some results were in but officials want to wait until they have all the data.

Toxins possibly from algae on Lake Erie fouled the water supply of the state's fourth-largest city early Saturday, forcing officials to issue warnings not to drink the water and the governor to declare a state of emergency as worried residents descended on stores, quickly clearing shelves of bottled water.

Agencies worked throughout the day, bringing in water supplies and distributing it at designated times and locations. No illnesses have been reported.