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VII-6 . expensive ,urface water treatment requirements. The slJrings are presently used to irrigate one of the larger ,'anches in the area, and changing the use of this water to Carbondale's municipal supply would dry up a large portion of the ranch. The cost of the water rights for the springs, in this case, would probably be close to the cost of the ranch, and this is probably too expensive for consideration at this time. . Avalanche Creek Avalanche Creek contains water of high enough quality and quantity to be considered as a possible future source. There are springs tributary to the Creek that could be entrapped and used without a treatment plant, but the cost to collect and transport this water into the system is extremely high. The springs are approximately five and one-half miles above Nettle Creek and would require a transmission line to extend all of the distances to Town. A transmission line from Avalanche Creek could not connect into the present Nettle Creek transmission line because, with improved collection facilities on Nettle Creek, the existing line would be running at capacity. The cost of a transmission line for the thi rteen miles Into Town would be in the one mill ion dollar range. Crystal River Surface water from the Crystal River is another possible source. This River can provide water at an elevation high enough for gravity flow into the Town's system and even though the River is dried up in a dry year by diversion, the Town has water rights substantial enough to insure a 5 cfs flow, even in the driest years. Water diverted from a surface source must be treated by a filtration plant before it can be used for domestic purposes. The cost of a treatment plant. together with the water quality in the River, are the drawbacks for this possible source. The main quality restriction for the Crystal River is the hardness which is around 300 ppm although it varies with the seasons of the year. .