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"This report describes the analyses, findings, conclusions and recommendations relative to extending water and sewer services to customers residing outside El Paso city limits but within El Paso County"--Page 15-1.
Groundwater represents an important supply source for municipal and irrigation uses in Far West Texas. The City of El Paso receives about 50 percent of its municipal water supply from surface water and 50 percent from local groundwater. Groundwater pumping in El Paso is from the Hueco Bolson and the Mesilla Bolson. Historic groundwater pumping in the Texas portion of the Mesilla Bolson has not resulted in significant changes in groundwater levels or groundwater quality in existing wells. Historic pumping in the Hueco Bolson has resulted in lowered groundwater levels and brackish groundwater intrusion. The groundwater level declines have resulted in the intrusion of brackish groundwater into areas that historically pumped fresh groundwater. A 1979 assessment concluded that El Paso would deplete fresh groundwater in the Hueco Bolson by 2030 if groundwater pumping continued to increase. Partly as a result of the 1979 assessment, El Paso reduced its groundwater pumping from the Hueco Bolson by increasing surface water diversions from the Rio Grande, increasing conservation efforts, and increasing reclaimed water use. As a result, groundwater levels in many parts of the Hueco Bolson have stabilized. Brackish groundwater intrusion remains an issue, and is being addressed with a brackish groundwater desalination plant, currently under construction. The new wells and existing wells that will supply this desalination plant will also assist in the management of brackish groundwater intrusion by intercepting the brackish groundwater before it can flow towards existing fresh groundwater wells. The 2006 Far West Texas Regional Water Plan contemplates a groundwater transfer project to meet increasing demands in El Paso County beginning about 2030, mostly from the Dell City area in Hudspeth County, Texas. Groundwater management in the Dell City area is governed by a groundwater conservation district that has established limits on groundwater pumping based on existing and historic uses. Groundwater pumping for irrigation began in the Dell City area in 1948, and groundwater levels have been essentially stable for since the 1980s. Future planning for a groundwater transfer project will require a detailed understanding of the hydrogeology of the groundwater in the Dell City area.
This report summarizes research performed by the Department of Civil Engineering on water and revenue loss problems in water utilities commonly referred to as 'unaccounted-for water'. The research was conducted by the principal investigator and graduate students with assistance from Community Consultants, Inc. of Springville, Utah. The American Water Works Association Research Foundation (AWWARF) sponsored this project. The objectives of this effort are to: 1. assess the value of various methods used to measure quantities of water that are lost of not accounted for; 2. provide an appraisal of the techniques available to monitor such losses; 3. suggest standardized definitions for the terms used to describe the types and sources of water and revenue losses; and 4. identify solutions available to utilities to control such losses of water or revenue including generalized benefit/cost analysis of suggested solutions.