filtered-water reservoir

例句：

1. 1. The reservoir is designed to store and filter the clean water from the river.
   这个水库的设计是为了储存和过滤来自河流的清洁水。
2. 2. The reservoir provides a safe source of drinking water for the nearby villages.
   这个水库为附近的村庄提供了安全的饮用水源。
3. 3.The reservoir is an important part of the water supply system in this region.
   这个水库是该地区供水系统的重要组成部分。