Excessive pumping of groundwater is also a major problem that plagues thirsty urban areas as they struggle to keep up with rising populations and water demand.

过度抽取地下水也是缺水城市地区面临的主要问题，尽管人们正努力缩减城市人口和用水需求。

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This paper discusses the problem of our urban water supply and suggests some guarantee countermeasures based on exploring new water resources, saving water and enhancing protection.

本文分析了我国城市供水存在的主要问题，并以开源节流加强保护为原则提出了安全保障对策。

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It will solve the problem of urban water supply effectively.

有效的解决了市政供水这一问题。

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According to Ben Urbonas, president of the Urban Watersheds Research Institute, these nutrient contaminants tend to be more of a problem in closed water systems,like lakes, where concentrations can build up.

VOA: standard.2010.08.04

Chances are you are at least somewhat aware of the growing water scarcity problem, particularly for urban populations.

FORBES: On World Water Day: A Call for Innovation