COLUMBIA, Pa. (AP) — A central Pennsylvania water company is warning customers not to drink from their taps because a storage tank was recently broken into.

Columbia Water Company says it’s not sure if anyone tampered with the water supply. The company serves about 21,500 customers in Lancaster County.

Company officials say they discovered Thursday that there had been a break-in overnight at a storage tank and pumping station.

A spokeswoman for the state Department of Environmental Protection says the agency is monitoring the situation, which should be resolved in three to five days. She notes the water is safe for bathing.

Customers can get potable water from tankers that will be stationed at a pair of shopping plazas in Columbia.

The company’s phone rang busy Thursday afternoon.

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