本幻灯片介绍了华盛顿州交叉连接控制项目，从其任务说明开始，介绍了背景信息、项目历史和当前状态，并讨论了其10个最低要素。这10个要素包括:法律权威； 危险调查； 安装经批准的BPA； 人才； 检查和测试； 测试QA/QC； 回流事故程序； 消费者教育； 记录；以及再生水要求。

This slide presentation discusses the Washington State Cross Connection Control Program, beginning with its mission statement, giving background information, program history and its current status, and a discussion of its 10 minimum elements. The 10 elements include: legal authority; hazard surveys; installation of approved BPAs; qualified personnel; inspection and testing; testing QA/QC; backflow incident procedures; consumer education; records; and, reclaimed water requirements.