The global market for HWT products has now become flooded with products.
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从氯化到过滤系统和太阳能消毒，有无数的净化用水办法。
From chlorination to filtration systems and solar disinfection, the options for purifying water are endless.
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制造商宣称经其产品处理后，水即可安全饮用，但在低收入国家，实验室缺乏对这些说法进行核实的能力。
Manufacturers claim their products make water safe for drinking, but in low-income countries, where many of these devices are essential, labs lack the capacity to verify these claims.
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但时代在变化。
But, times are changing.
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世卫组织的Batsi Majuru博士说，“家用水处理的主要好处是维护健康”。
“The primary benefit from household water treatment is protecting health,” says WHO's Dr Batsi Majuru.
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Majuru博士指出，家用水处理对健康的好处现在得到越来越多认可，并认为必须进行独立和严格的评估。
Now, the health benefits of HWT are increasingly recognized and the need for independent and rigorous evaluation is essential, adds Dr Majuru.
It is estimated that when used correctly and consistently, HWT and safe storage of water can reduce diarrhoeal diseases by as much as 45%, and save thousands of young children every year.
The International Scheme to Evaluate Household Water Treatment Technologies was established in 2014 to independently and consistently assess the performance of HWT products against WHO health-based criteria - an evaluation system similar to how pharmaceuticals and insecticide-treated bed nets are pre-qualified.