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在自然水源匮乏的某些地区,一些非常规水源可以开发利用并加入到区域供水系统中,这便是城市废水。这种废水经过适当处理后可用于多种用途,包括灌溉农作物。 以色列农业颇依赖于灌溉,灌溉水约占全国总需量的75％,在此条件下,所有的城市废水都被考虑重新用于农作物灌溉,目前,该国污水网络中已有超过65％的污水被重新使用,这个数字预计即将增至约90％。各种革新性的废水处理方法都旨在降低灌溉水的单位成本。废水再利用与脱盐海水用于灌溉相比是一种较经济的选择。其另一优点是保护自然水体免受城市污水污染。废水重新用于灌溉还可方便而廉价地利用水中
In some areas where natural water resources are scarce, some unconventional sources of water can be exploited and added to the regional water supply system, which is urban wastewater. This wastewater is properly treated for a variety of uses, including irrigation of crops. Israel’s agriculture is rather dependent on irrigation, which accounts for about 75% of the country’s total demand, and all urban wastewater is considered for reuse in crop irrigation and at present more than 65% of the country’s wastewater network Sewage water is reused and this number is expected to increase to about 90%. A variety of innovative wastewater treatment methods are designed to reduce the unit cost of irrigation water. Wastewater reuse is a more economical option than desalination seawater for irrigation. Another advantage is that it protects natural water from urban sewage. Wastewater can be reused for irrigation and water can be easily and cheaply used