遵守新的《安全饮用水法》（SDWA）法规导致成品水发生变化 美国各地许多系统的质量。通常是成品水 质量变化是由于符合消毒副产品法规（阶段 1 D/DBP规则）。成品水质量的变化与铅含量的增加是同步的 出现在一些配电系统中，以及有色金属问题 水（铁）或新建筑管道系统的问题。这个 由于水质的变化不会立即导致腐蚀的增加，因此目前尚不清楚 立即的腐蚀副产物反应和常规监测参数 不表示存在问题。此外，由于许多系统已被减少 根据铅和铜规则进行监控，具体分析合规性参数 铅和铜的测试并不是例行的，两次测试之间的间隔时间长达六年 对减少监测的铅或铜进行采样。许多因素会增加腐蚀速率，因此很难确定准确的腐蚀速率 原因此外，只有在类型和剂量相同的情况下，使用缓蚀剂才有效 选择得当。近年来，铅的问题被归因于环境的变化 处理过程，以降低消毒副产物。有机物含量越低，含量越高 氯化物、更高的硫酸盐、更高的pH值、氯胺和“游离氨”，以及更低的 碱度可能都在起作用。 寻找饮用水腐蚀问题的解决方案需要仔细审查 成品水特性、配水系统材料、类型和位置 投诉，以及对整个配送过程中水质变化的审查 系统包括: 残留消毒剂水平、抑制剂磷酸盐浓度、pH值、， 碱度和硝酸盐/亚硝酸盐（在氯胺系统中）。包括5个参考文献、图表。

Compliance with new Safe Drinking Water Act (SDWA) regulations has resulted in a change in finished water quality for many systems throughout the United States. Most often the finished water quality change has been due to compliance with disinfection byproduct regulations (Stage 1 D/DBP Rule). Changes in finished water quality has been concurrent with an increase in lead occurrence in some distribution systems, and issues with colored water (iron), or problems with new building plumbing systems. The increase in corrosion is not immediately known because changes in water quality do not illicit an immediate corrosion byproduct response and routine monitoring parameters do not indicate a problem exists. In addition, since many systems have been on reduced monitoring under the Lead and Copper Rule, specific analysis for compliance parameters of lead and copper are not routinely done, with as much as six years allowed between sampling for Pb or Cu for those on reduced monitoring. Many factors can increase corrosion rates, making it difficult to determine the exact cause. In addition using corrosion inhibitors is only effective if the type and dose is properly selected. Problems with lead in recent years have been attributed to change in treatment processes in order to lower disinfection byproducts. Lower organics, higher chlorides, higher sulfates, higher pH's, chloramines and "free ammonia", and lower alkalinity may all be playing a role. Finding a solution to drinking water corrosion problems requires a careful review of finished water characteristics, distribution system materials, types and locations of complaints, and a review of water quality changes throughout the entire distribution system including: residual disinfectant levels, inhibitor phosphate concentrations, pH, alkalinity, and nitrate/nitrite (in chloramine systems). Includes 5 references, figures.