A 20-litre jerrycan of poor quality water has quadrupled in price.

一瓶20升的劣质水的价格已经涨了四倍。

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The results show that groundwater is seriously polluted as poor quality water covers nearly 60% of the plain regions.

初步评价结果表明，我国地下水水质形势严峻，劣质水分布面积占平原区面积近60%。

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Since the essential raw cooling water system supplies poor quality water, it is not used except in emergency when the condensate supply is unavailable.

由于原水系统的水质得不到保证，除非在凝结水不可用的紧急情况下才使用。

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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

During the next 10 years, many countries important to the United States will experience water problems shortages, poor water quality, or floods that will risk instability and state failure, increase regional tensions, and distract them from working with the United States on important US policy objectives.

FORBES: Water Risk Threatens Businesses, National Security