研究了供水管道对饮用水微生物质量的影响。发现生活用水管道中的微生物水质与分配系统主管中的不同。在工厂附近的服务管线中，服务管线第一次冲洗和主管的细菌计数差异通常更为明显。然而，在对供水管线进行彻底冲洗后，发现自来水水质与主管中的水质相当。研究的细菌学参数包括吖啶橙染色后的总直接计数、异养平板计数、总大肠菌群和气单胞菌。测量的物理化学参数包括温度、氧化剂残留量、总有机碳、溶解有机碳和可生物降解有机碳。在第一次冲洗、冲洗服务管线后以及来自主管的水样中测定铅和铜的浓度。 包括21个参考文献、表格和图表。

The influence of service lines on the microbiological quality of drinking water was investigated. The microbial water quality in domestic service lines was found to differ from that in the main pipes of the distribution system. Differences in bacterial counts from the first flush of the service line and from the main pipe were generally more pronounced in service lines located near the plant. After a thorough flushing of the service line, however, tap water quality was found to be equivalent to that in the main pipe. Bacteriological parameters studied were total direct count after acridine orange staining, heterotrophic plate counts, total coliforms, and Aeromonas. Physicochemical parameters measured included temperature, oxidant residual, and total, dissolved, and biodegradable organic carbon. Lead and copper concentrations were determined in the first flush, after flushing the service line, and in the water samples from the main pipe. Includes 21 references, tables, figures.