WHO世界卫生组织：2026年世界卫生组织家庭饮用水处理技术国际评估方案：第三轮和第四轮结果报告（英文版）

The World Health Organization (WHO) International Scheme to Evaluate Household Water Treatment Technologies (the Scheme) was established to independently and consistently evaluate the performance of household water treatment (HWT) technologies in removing microbial contaminants from drinking-water. The Scheme is part of the WHO normative programme of work on drinking-water safety. Results from the Scheme inform Member States’ and United Nations (UN) procuring agencies’ selection of effective