The Monticello Nuclear Generating Plant in Minnesota leaked approximately 400,000 gallons of tritium-contaminated water from a broken pipe. Xcel Energy discovered the leak in November 2022 but did not publicly disclose it until March 2023 — a four-month delay that outraged state officials and the public. The radioactive water seeped into the soil near the Mississippi River, which serves as a drinking water source for downstream communities. The Nuclear Regulatory Commission and Minnesota regulators investigated both the leak and the disclosure delay. The incident raised serious questions about utility transparency obligations and the adequacy of notification requirements for radioactive releases.
The Monticello Nuclear Generating Plant in Minnesota leaked approximately 400,000 gallons of tritium-contaminated water from a broken pipe. Xcel Energy discovered the leak in November 2022 but did not publicly disclose it until March 2023 — a four-month delay that outraged state officials and the public. The radioactive water seeped into the soil near the Mississippi River, which serves as a drinking water source for downstream communities. The Nuclear Regulatory Commission and Minnesota regulators investigated both the leak and the disclosure delay. The incident raised serious questions about utility transparency obligations and the adequacy of notification requirements for radioactive releases.
// Source
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// Incident Details
| Incident Date | 20221101 |
| County | Wright County MN |
| State | Alabama |
| Severity | High |
| Published | November 1, 2022 |
| Source | NRC / Minnesota PUC |