本标准描述了为清洁、检查、维护、喷漆、维修或任何其他可能导致水污染的活动或事件而临时停用的新处理设施和现有水处理设施的氯化材料、程序和消毒要求。通常，本标准适用于处理组件，包括滤池、过滤介质、清洗井、泵吸入井，以及位于过滤器进水下游的相关管道和附件，或处理过程中第一次使用消毒剂的位置，或设施的所有部分（如果未提供初级消毒）。 采用的消毒方法是在特定时间段内与高强度氯溶液进行表面接触。除使用适当的消毒方法外，不存在总大肠菌群是消毒过程符合本标准的确认。

This standard describes chlorination materials, procedures, and requirements for disinfection of new treatment facilities and existing water treatment facilities temporarily taken out of service for cleaning, inspection, maintenance, painting, repair, or any other activity or event that might lead to contamination of water. Typically, this standard applies to treatment components, including filter basins, filter media, clearwells, pump suction wells, and associated piping and appurtenanceslocated downstream from the filter influent, or from the first point of application of disinfectant in the treatment process, or all portions of a facility if no primary disinfection is provided. The disinfection method employed is surface contact with a high-strength chlorine solution for a specific time period. The absence of total coliform bacteria in addition to the use of proper disinfection practices is confirmation that the disinfection process has been accomplished in compliance with this standard.