NMED News:

SANTA FE — The New Mexico Environment Department is hosting a public information session at 5:30–7 p.m., Thursday, June 25 at Harold Runnels Auditorium in Santa Fe to provide updates on the hexavalent chromium groundwater contamination beneath Los Alamos National Laboratory and Pueblo de San Ildefonso.

The plume, discovered in 2005, stems from Los Alamos National Laboratory (LANL) operations dating to the 1950s, when chromium-laced water used in the facility’s power plant was dumped into nearby Sandia Canyon. In November 2025, the plume was found to have migrated beyond lab boundaries onto Pueblo de San Ildefonso land.

NMED will cover a brief history of the plume, status of interim remediation measures, and updated information and data from the Department’s ongoing investigation.

The session can also be attended virtually via WebEx. Those interested can register by following the meeting link available on NMED’s Events Calendar.