这篇双月刊的综合报道重点介绍了最热门的新闻故事 AWWA的每周通讯WATERWEEK报道了最近几个月的情况 给会员公用事业公司。涵盖的主题包括:专家通过实施AWWA标准G200中详述的自愿措施，确定解决配电系统风险的步骤；根据国会今秋达成的一项协议，水和废水公用事业公司将 免除财政年度批准的临时化学品安全要求 （FY）2007年国土安全部（DHS）支出法案； 美国环境保护局（USEPA）预计将在大辛辛那提启动其最初的WaterSentinel试点项目，这是一个及时检测和适当应对饮用水污染威胁和事件的系统 2007年夏季的水务工程（GCWW）；从2010年开始，加利福尼亚州开始使用管道和管道装置输送饮用水 根据9月底签署的立法，铅含量不得超过0.25% 加州州长阿诺德·施瓦辛格；美国环保局去年秋天发布了一份指导意见，建议公用事业公司不要询问收取费用的房主 用于铅和铜规则（LCR）合规性目的的自来水样本 这样做之前，水龙头曝气器；AWWA对美国环境保护局在LCR拟议修订中的要求提出强烈批评 要求水系统在进行任何处理变更之前获得州批准；加利福尼亚州的供水设施必须符合6µg/L的高氯酸盐标准 根据一项提议的规则，该规则还提供了经济困难人群的差异 社区；AWWA对美国环保局进行另一次社区水系统调查的计划提出了质疑 （CWWS）试图寻求更多信息来衡量 饮用水法规的影响和州优先项目的有效性；在评论美国环保局对氯化三嗪的累积风险评估时 除除草剂外，AWWA重申其长期以来的立场，即阿特拉津和 西马嗪及其降解物应负责控制人类暴露于 而不是落在供水商身上的负担；来自全美数千口家庭水井的水质监测数据 指出发现的主要污染物包括三种有机农药，包括砷和磷 硝酸盐在超过其联邦饮用水标准的污染物清单中排名第一；而且，美国环保局水务官员正在放弃2008年95%人口的目标 社区供水系统提供的水符合所有基于健康的标准。

This bimonthly roundup features highlights of the hottest news stories of recent months as reported in WATERWEEK, AWWA's weekly newsletter to member utilities. Topics covered include: experts identify steps to address distribution system risks by implementing voluntary measures detailed in AWWA Standard G200; under terms of a deal reached this fall by Congress, water and wastewater utilities are exempted from interim chemical security requirements authorized in the fiscal year (FY) 2007 spending bill for the Department of Homeland Security (DHS); the US Environmental Protection Agency (USEPA) expects to launch its initial WaterSentinel pilot project, a system for timely detection and appropriate response to drinking water contamination threats and incidents, at the Greater Cincinnati Water Works (GCWW) during the summer of 2007; starting in 2010, pipes and plumbing fixtures delivering potable water in California can't contain more than 0.25% lead under legislation signed in late September by California Gov. Arnold Schwarzenegger; USEPA issued guidance last fall advising utilities not to ask homeowners who collect tap-water samples for Lead and Copper Rule (LCR) compliance purposes to remove faucet aerators before doing so; strong criticism by AWWA on USEPA's requirement in proposed revisions to the LCR to require water systems to get state approval before making any treatment changes; water utilities in California would have to comply with a perchlorate standard of 6 µg/L under a proposed rule that also provides variances for economically distressed communities; AWWA has faulted a USEPA plan to conduct another Community Water System Survey (CWWS) for falling short in its attempt to seek additional information to measure the effects of drinking water regulations and the effectiveness of state primacy programs; in commenting on USEPA's cumulative risk assessment for chlorinated triazine herbicides, AWWA reiterated its long-held position that manufacturers of atrazine and simazine and their degradates should be responsible for controlling human exposure to them rather than that burden falling on water suppliers; water quality monitoring data from thousands of domestic wells across the United States indicate that the top contaminants found include three organic pesticides, with arsenic and nitrate topping the list of contaminants exceeding their federal drinking water standards; and, USEPA water officials are backing away from a 2008 target of having 95% of people served by community water systems receive water that meets all health-based standards.