The drinking water used in many of Colorado’s cities passes through mountain wetlands. Eve-Lyn Hinckley August 20, 2025 Colorado’s subalpine wetlands may be producing a toxic form of mercury – that’s a concern for downstream water supplies Eve-Lyn Hinckley, University of Colorado Boulder Subalpine wetlands in the Rocky Mountains are warming, creating the perfect conditions for producing methylmercury, a potent neurotoxin.