The traditional water supply system is often criticized by its low efficiency, poor quality of water supply, which fails to meet the increasingly improving living standard.

现有的供水系统效率低、供水质量低，无法满足人们日益提高的生活水平需要。

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The overall quality of water and sanitation remains very poor, therefore facilitating cholera transmission.

水和环境卫生的总体质量仍然极差，从而助长了霍乱传播。

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This unique creature is part of an imperiled community of aquatic organisms in the Gulf of Mexico, where poor water quality and habitat loss have weakened the ecosystem.

这种独特的生物是墨西哥湾水生生物中遭到威胁的物种之一，墨西哥湾恶劣的水质和栖息地的丧失减弱了生态系统。

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After surveys of high litter levels and poor bathing water quality in the past, he set up special "beach summits" to try to tackle the problem.

BBC: High tide of rubbish on Northern Irish beaches

Neglected Tropical Diseases is an umbrella term for a range of bacterial, parasitic and worm infections which flourish in areas with poor water quality and inadequate sanitation.

BBC: Plan to cut burden of tropical disease