Santa Fe, NM.
The Los Alamos National Laboratory (LANL) has detected far more hexavalent chromium (Cr) contamination than previously estimated in the “sole source” regional groundwater aquifer that serves Los Alamos, Santa Fe and the EspaƱola Basin. Sampling in July from a new well meant to inject treated groundwater back into the aquifer detected chromium contamination five times greater than the New Mexico groundwater standard of 50 micrograms per liter (ug/L).