Cortez is blessed with the high quality Dolores River water out of McPhee Reservoir with which to begin the water treatment process. All water processed by the treatment plant is from McPhee Reservoir. View a copy of the latest CCR (Consumer Confidence Report). The City's Public Works Department, Water Division, is responsible for maintaining a safe and healthy community by delivering high quality water to the citizens of Cortez for household uses, yard irrigation, and business uses. The water services provided by the City include: water treatment; distribution; line installation, maintenance and replacement; and meter reading. The City also treats and provides water to Montezuma County Water District No. 1, Towaoc, and the Ute Mountain Ute Tribe.