西盆地市政水区一直致力于大力节约用水和水资源 回收项目。该项目是这一承诺的延续，并扩大了水的循环利用 这样每年可以节约超过100亿加仑的进口水。这个项目也 减少废水处理量增加的影响，并提供可安全使用的优质水 通过注入地下水返回环境。在屏障处使用再净化水 这是一种持续保护当地地下水资源免受海水侵蚀的创新方法 在保护加州宝贵的水资源的同时。 紫外线（UV）氧化是西盆地市政水域的重要组成部分 再生水项目（WBWRP）。紫外线处理将提供消毒和额外的屏障 N-亚硝基二甲胺（NDMA）等复杂化合物的光解和氧化 新出现的污染物。本文总结了成功的紫外线策略，以符合加州农业部的要求 卫生服务部（CDHS）起草了地下水补给再利用条例，涉及减少NDMA 水平和微量有机物。采购、验证和监控方面的具体挑战如下: 提出了三个独立项目的解决方案:WBWRP、Orange County Water 地区地下水补给和洛杉矶县环卫区阿拉米托斯屏障项目。 重点介绍了行业挑战，以说明优化这些系统运行所需的信息 项目。包括表格、数字。

The West Basin Municipal Water District maintains a commitment to aggressive water conservation and recycling programs. This project is a continuation of that commitment and expands the Water Recycling Plant such that it will conserve over ten billion gallons of imported water annually. This project also reduces the impacts of increased disposal of wastewater and provides high quality water that can be safely returned to the environment via groundwater injection. The use of re-purified water at the barrier represents an innovative method to continue protecting local groundwater resources from seawater intrusion while conserving California's precious water resources. Ultraviolet (UV) oxidation is an important component for the West Basin Municipal Water District Recycled Water Project (WBWRP). The UV process will provide disinfection plus an additional barrier of photolysis and oxidation of complex compounds like N-nitrosodimethylamine (NDMA) and many emerging contaminants. This paper summarizes the successful UV strategy for complying with the California Department of Health Services (CDHS) draft Groundwater Recharge Reuse regulation, involving reduction of NDMA levels and addressing trace organics. Specific challenges on procurement, validation and monitoring are presented with solutions that were derived from three separate projects: WBWRP, Orange County Water District Groundwater Recharge and Los Angeles County Sanitation District Alamitos Barrier Project. Industry challenges are highlighted to illustrate information needed to optimize the operation of these projects. Includes tables, figures.