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Show PART II PRESENT STATUS The largest municipalities in the subregion and 1960 populations are Farmington, New Mexico (23,786); Aztec, New Mexico (4,137); Durango, Colorado (10,530); and Cortez, Colorado (6,764). The 1963 PHS inventory listed 32 municipal systems in the subregion. The inventory showed that 24 municipal systems needed improvement to pro- vide adequate water service. It was indicated that 13 municipal systems needed source improvement and 8 needed water treatment improvement. Farmington, New Mexico was listed as needing improvement of its surface water source, however, modifications and improvements have eliminated the problems. The extent of water treatment provided by subregional municipal systems is shown in Table 20. Table 20 - Municipal Water Treatment San Juan-Colorado Subregion Type of Water Treatment Number of Municipal Systems More than disinfection Disinfection only None 9 7 16 23 The Animas River occasionally has very high concentrations of heavy metals which exceed the recommended limits (21). The municipalities of Durango, Colorado; Aztec, New Mexico; and Farmington, New Mexico utilize the Animas River as a source of municipal supply. An estimated population of 42,800, or 33 percent of the subregional population, including the hydrologic area of Arizona was served by rural- domestic systems. There are many rural communities in the subregion with populations greater than 50 which do not have central municipal systems. There was an estimated Indian and non-Indian population of 62,200 living on or near the Navajo Indian Reservation in the subregion. A significant portion of this Indian population has an inadequate supply. In some cases it is necessary to haul water from nearby sources to satisfy minimal requirements. Although improvements are being made, further improvements are needed to provide adequate service. 32 |
