Update Regarding the Cement Wash Water Spill at the Mayo Hydro Facility

Oct 10, 2025  Comment

This is an update to a post released on October 8, 2025.

Preliminary environmental observations and water sampling results following the spill at the Mayo Hydro Facility yesterday suggest a low level of ecological concern. There were no observed impacts to fish in the plunge pool, and pH readings in and downstream of the pool were neutral. A Yukon Energy contractor will be submitting additional water quality samples for analysis.

The contractor working on the spillway has updated its work plan to ensure an incident of this nature does not happen again. Yukon Energy has completed a thorough review of this plan and has determined that work on the spillway can proceed.

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