GRANTS, N.M. — Federal environmental regulators want to add a northwestern New Mexico creek basin in an area with a history of uranium mining to a list of priorities for cleanup.

The Gallup Independent reports the Environmental Protection Agency is seeking concurrence from the state and local governments to add the San Mateo Creek Basin in McKinley and Cibola counties to the Superfund National Priorities List.

The basin comprises approximately 321 square miles (831 sq. kilometers) within the Rio San Jose drainage basin, which contains numerous legacy uranium mines.

Water from many of the mines was discharged into San Mateo Creek.

A Nov. 16 EPA letter to the New Mexico Environment Department says there’s evidence that hazardous substances have impacted private drinking water wells and threaten to impact public water supplies.