(c) 作为水资源优化进程的一部分，并考虑到由于智利长期存在季节性干旱问题，水是稀缺的昂贵资源，所以水的回用有很大的价值而且可以向广大民众发出一个重要信息。拉加经委会已在园地用水的供应、处理和回用方面实施了重要举措。这包括在 2017 年修建一口 170 米深，能够提供 100%拉加经委会水需求量的水井。北楼项目设计包括建造一个废水处理厂，回用 100%北楼废水于灌溉用途。预测显示年度回收水量估计为 1 760 立方米，足以提供拉加经委会 21 500 平方米园地约 57%的灌溉所需用水；
(c) As part of a water resource optimization process and taking into consideration that water is a scarce and costly resource in Chile, wher e seasonal droughts are a perennial problem, the reuse of water is of significant value and sends an important message to the population at large. ECLAC has already implemented important initiatives for the supply, treatment and reuse of water within the c ampus. This includes the construction, during 2017, of a water well with a depth of 170 m that is capable of supplying 100 per cent of water requirements at ECLAC. The North Building project design incorporates the construction of a wastewater treatment pl ant that will reuse 100 per cent of the North Building’s wastewater for irrigation purposes. Projections show an estimated annual volume of 1,760 m3 of recycled water, which would supply approximately 57 per cent of the irrigation requirements of the 21,500 m2 grounds of the ECLAC campus;