Cutting down trees, building roads in mountains, constructing buildings and removing sediments from sidewalks using water does donate to increase the turbidity of water.
Step-by-step explanation:
Turbidity of water is formed due to a suspension formation of water and the dust and dirt along with several insoluble particles. This turbidity is actually formed in nature due to erosion by water or wind which gets deposited in water. Removing trees or construction of road leads to loosening of ground soil which is easily washed away by water. Construction of buildings also results in cutting of trees. The washing of sediments with water also increases the chance of turbidity of water.