这张海报的目的是展示中区水回收设施项目的背景和工艺选择，并解释水再利用在节约饮用水供应和保护邻近水域方面的好处。还提供了项目成本和时间表。

The objective of this poster paper was to present the Central District Water Reclamation Facility project's background and process selection, and to explain the benefits of water reuse in conserving potable water supplies and protecting adjacent waters. Project costs and schedules are also provided.