天津市汉沽区加大水利改革力度，合理计算供水成本，实行水库供水有偿服务，改变了过去为农业供水长期不收水费“喝大锅”水的现象，走向水利良性循环轨道。汉沽区营城水库是一座中型水库。1972年12月兴建，设计蓄水面积286．7hm’，设计蓄水库容0．l亿m‘，该水库主要为农业和 Hangu District, Tianjin to increase water conservancy reform, a reasonable calculation of water supply costs, the implementation of paid services reservoir water supply, changing the past long-term water for agriculture without water “drink cauldron” water phenomenon, to the virtuous circle of water orbit. Hangu District Yingcheng Reservoir is a medium-sized reservoir. December 1972 construction, design of water storage area of ​​286.7hm ’, designed storage capacity of 0. l billion m ’, the reservoir mainly for agriculture and