The article analyzes the operation status of water pollution source online monitoring system at present in China, points out that it is necessary to push the third party to operate and manage.

文章分析了目前我国水污染源在线监测系统的运营现状，指出推行第三方运营管理是十分必要的。

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The Liujiang River, which is the main source of drinking and industrial water use of the city, suffered from pollution from untreated sewage and rainwater flows.

作为柳州市工业和居民生活用水主要水源的柳江则受到部分未经处理的污水和雨水排放污染。

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Wind is a clean source of renewable energy that produces no air or water pollution.

风是一种清洁的可再生能源，不产生空气和水污染。

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In developing countries, the main source of water pollution is not stormwater,but waste water.

VOA: standard.2010.08.04

These bills will curb lead levels in water pipes, a major source of harmful lead exposure for children, and help address diesel engine pollution that is linked to serious health conditions like asthma and heart and lung disease.

WHITEHOUSE: Council on Environmental Quality Blog