watersupply

Watersupply and drainage engineering is sorted out engineering discipline, and it is a field of intercross multi-discipline.

水排水工程为工程学科门类，是多学科相交叉形成的一门学科。

Water supply corporations is feazed by redwater even blackwater, users rebel for that, they even have suspicious with the watersupply corporations.

红水、黑水现象经常困扰各市的供水企业，对此用户十分反感，甚至对自来水的信誉产生了质疑。