本文提供的数据涉及1946年至1980年35年间，与从公共或个人供水系统获得的用于饮用或家庭用途的水相关的水传播疾病暴发。讨论了此类暴发的发生、分布和趋势。在1946年至1980年期间，报告了672次水传播疾病暴发，影响超过150000人。暴发呈现时间分布，高峰出现在6月、7月和8月。尽管非社区系统的疫情数量超过社区系统，但社区系统的疫情频率几乎是社区系统的两倍。社区供水系统发生的疾病病例远远超过非社区供水系统。在此期间，导致并促成水传播疾病暴发的供水系统缺陷与过去26年（1920年）报告的情况几乎没有差异- 1945). 最明显的缺陷是，在需要消毒的地方消毒不到位，在需要消毒的地方消毒操作不当。包括8个参考文献、表格、图表。

The data presented in this article relate to waterborne disease outbreaks associated with water obtained from public or individual water systems and intended for drinking or domestic purpose during the thirty-five-year period between 1946 and 1980. The occurrence, distribution, and trends of such outbreaks are discussed. Between 1946 and 1980, 672 waterborne disease outbreaks affecting more than 150,000 persons were reported. Outbreaks exhibit temporal distribution, with peak occurrences in June, July, and August. Although outbreaks in noncommunity systems outnumber those in community systems, the frequency of outbreaks is almost twice as great in community systems. Cases of illness occurring in community water systems far outnumber those in noncommunity systems. The deficiencies in water systems that caused and contributed to waterborne outbreaks during this period differed little from those reported for the previous 26 years (1920-1945). The glaring deficiencies were that disinfection was not in place where it was needed and not properly operated where it was in place. Includes 8 references, tables, figures.