1
Engineer who looks for nice and clean rivers to provide water for the city
2
People who clean the water
3
Water we can't drink, dirty and bad
4
Engineer who cleans the water and tests water in labs
5
Water we can drink after treatment
6
Engineer who designs pipes and plumbs for the city
7
Forest and land next to rivers
8
A riiver is a natural _ _ _ _ of water.
9
I'm the curve of a river
