The Industrial and Sanitary Permit regulates permitted point source outfalls under the Clean Water Act's National Pollutant Discharge Elimination System requirements.

Los Alamos National Laboratory discharges to Sandia Canyon, Los Alamos Canyon, Mortandad Canyon, Water Canyon, Canon de Valle, Ten Site Canyon, and Canada del Buey. The facility’s discharges, most of which are intermittent in nature, are located from 6.9 to 10.4 miles from the Rio Grande. Most of the receiving streams are ephemeral in nature and do not generally reach the Rio Grande, except as the result of precipitation events.

This permit (NPDES No. NM0028355) was issued by the U.S. Environmental Protection Agency, Region 6, on August 12, 2014 to Los Alamos National Security, LLC and the U.S. Department of Energy (the Permittees). The NPDES Industrial and Sanitary Permit became effective on October 1, 2014.