虽然以前的研究广泛集中在处理水以防止腐蚀，但 影响腐蚀垢稳定性的因素及其对饮用水质量的影响 到目前为止，配电系统内部还没有被认为是相关的。这项调查评估了 老化镀锌配水系统腐蚀结垢在替代条件下的响应 水源——地下水以及地下水和地表水的混合物。使用管道的试点项目 设计了各种分配系统，并对水质变化进行了监测。 该系统设计用于模拟配电系统的实际运行条件， 服务20年和40年。在过去几年中，对水质进行了持续监测 疗程18个月。结果表明，在相似的水特征下，每根管道都有响应 与此不同的是，这表明规模的结构和组成在这一过程中起着重要作用 维持配水系统内的水质。一种新的水处理方法的引入 污染源（地表水和地下水的混合物）使铁的释放量、浊度普遍降低 和颜色值。相比之下，进水水质参数显示出显著变化 基线包括溶解氧、pH值、碱度和硫酸盐。一般来说，较旧的管道 具有更发达的氧化皮，对水质变化比 新管道。总体而言，影响管道内水质的主要因素如下: 温度升高、溶解氧增加、pH值升高、碱度降低，以及 硫酸盐增加。包括8个参考文献、表格、图表。

While previous studies have extensively focused on treating water in order to prevent corrosion, the factors that affect stability of corrosion scales and the role they play on the quality of drinking water within distribution systems have not been considered relevant until now. This investigation assessed the response of corrosion scales from aged galvanized water distribution systems under alternative water sources - groundwater and a blend of ground and surface water. A pilot project using pipes from various distribution systems has been designed and monitored for variations in water quality. The system is designed to simulate the actual operating conditions of a distribution system with 2, 20 and 40 years of service. Continuous monitoring of water quality has been recorded over the course of 18 months. Results showed that under similar water characteristics each pipe responded differently, suggesting that both the structure and composition of scale play an important role in maintaining the quality of water within the distribution system. The introduction of a new water source (the surface and groundwater blend) produced general reductions in iron release, turbidity and color values. The influent water quality parameters that showed significant variations compared to the base-line were dissolved oxygen, pH, alkalinity, and sulfates. In general, older pipes, which have much more developed oxide scales, were more sensitive to water quality variations than the new pipe. Overall, the main factors affecting water quality within the pipes were identified as increase in temperature, increase in dissolved oxygen, increase in pH, decrease in alkalinity, and increase in sulfates. Includes 8 references, tables, figures.