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A nuclear power plant leaked contaminated water in Minnesota. Here's what we know

The 400,000 gallon leak of water containing tritium occurred in November 2022, but the general public was not notified until last week. Officials said the leak is contained and poses no public danger.
This July 24, 2008 photo shows the Monticello nuclear power plant in Monticello, MN. In November 2022, the plant confirmed a 400,000 gallon leak of water containing tritium and reported it to officials. The leak wasn't known to the public until Thursday.

Minnesota officials are monitoring the cleanup of a 400,000 gallon leak of contaminated water from a nuclear power plant in the city of Monticello run by the energy giant Xcel Energy. Officials said there is no danger from the leak.

The leak was detected nearly four months ago and reported to state and federal regulators. The federal Nuclear Regulatory Commission posted a notice publicly at the time, but the company and state agencies did not notify the general public until last week.

"Xcel Energy took swift action to contain the leak to the plant on Thursday. Ongoing monitoring has confirmed that the leak "is fully contained on-site and has not been detected beyond the facility or in any local drinking water," the company said.

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