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OVERCOMING IMPEDIMENTS TO WATER RECYCLING The San Gabriel Valley Groundwater Recharge Project

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The County Sanitation Districts of Los Angeles County (Districts) have a long history in the field of water recycling, resulting in one of the most advanced and widespread programs for the treatment, distribution and reuse of reclaimed wastewater. The Districts' role includes producing the reclaimed water, promoting its use, conducting necessary research and cooperating with other entities who either distribute the water to retail customers or use it themselves.

Despite the long history and numerous successes in recycling water in Southern California, impediments to expansion still cause delays in implementation, for both the Districts and other recycling entities. Along with previously identified technical obstacles, regulatory constraints, institutional barriers, economic deterrents and public opposition, for which potential solutions have been proposed, a new set of concerns are emerging, particularly for indirect potable reuse. Emerging concerns, such as N-nitrosodimethylamine (NDMA), protozoan parasites (Giardia and Cryptosporidium) and pharmaceutically active compounds (endocrine disrupters, antibiotics, analgesics) are fairly recent discoveries and, as such, have not necessarily been adequately researched. Identifying and addressing these concerns are critical in ensuring that water recycling projects, wherever they may be, can be fully developed to yield critical new water supplies.
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Document Type: Research Article

Publication date: 01 January 2000

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