The microbial quality of drinking water is a concern to consumers, water suppliers, and public health authorities as well.

饮用水中的病原微生物状况不仅关系到消费者、水厂，更关系到公众健康权益的问题。

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For instance, simple filtration and disinfection of water at the household level dramatically improves the microbial quality of water, and reduces the risk of diarrhoeal disease at low cost.

例如，在家庭层次水的简单过滤和消毒可显著改善水的微生物质量和以低成本减少腹泻病的危险。

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Traditional methods of genetic improvement such as classical mutagenesis and conjugation can be applied to improve the quality of microbial cultures.

遗传改良的传统方法，如传统诱变和接合作用可用于提高微生物培养物的质量。

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