develop guidelines on quality of drinking-water, safe use of wastewater in agriculture and aquaculture, and management of safe recreational waters;

在饮水质量、农业和水产废水的安全使用以及休闲娱乐用水的安全性方面，制定指南；

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This research is a part of China national 863 project ---Water Quality and SafetyEvaluation of Urban Reclaimed Wastewater for Green Land Irrigation.

本论文是国家863课题“都市再生水灌溉绿地水质控制指标及安全性评价”的一部分。

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Protect water quality and conserve potable water resource by treating domestic wastewater to exceed Class 1A discharge standards and use for site irrigation.

通过市政污水处理来满足1A级的水质排放标准，并用于灌溉用水，从而达到保护水质，保护饮用水资源的目的。

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The film highlights key water quality problems such as lack of access to safe water and sanitation, inefficient wastewater management in urban areas, water pollution caused by intensive use of nutrients and chemicals in agriculture, the invisible threat of new and emerging pollutants in water and the economic costs of water quality degradation.

UNESCO: MEDIA SERVICES