Colorado health officials have granted Climax Molybdenum a third extension of a “temporary” lifting of the state’s health limit for molybdenum pollution of a creek, allowing continued elevated discharges above Denver’s drinking water supplies. The Colorado Department of Public Health and Environment water-quality commissioners voted unanimously this week to give Climax until June 2020 to meet state standards. The delay, commissioners said, will give time for Climax to resolve scientific uncertainty around how much molybdenum is too much for people.