What are the wastewater treatment plants in Zhengzhou? Addresses and contacts would be good to have as well

There are three sewage plants currently in operation in Zhengzhou (there is one under construction, whether or not it is in operation I don't know yet~),

There are:

Wulongkou Sewage Treatment Plant

Wulongkou Sewage Treatment Plant is located at Wulongkou Road in Zhengzhou (north of RanTun Road, east of Coal Cottage Road North and the Wulongkou Road Intersection), east of the town of Wulongkou, and north of Venetian Water City neighborhoods.

Matougang sewage plant

This specific road I can't say, anyway, is the old 107 National Highway over the Lianhuo Expressway, but also a few kilometers north east of the road. Should be near the village of Matougang

Wang Xinzhuang sewage plant

In Zhengzhou City, near the intersection of the East Fourth Ring Road and Jinshui East Road, Wang Xinzhuang