采用ISO 19458:2006，对水取样制度的规划、微生物分析的取样程序以及分析开始前样品的运输、处理和储存提供指导。它侧重于微生物调查的抽样。

Adopts ISO 19458:2006 to provide guidance on planning water sampling regimes, on sampling procedures for microbiological analysis and on transport, handling and storage of samples until analysis begins. It focuses on sampling for microbiological investigations.