Why does the Watershed need to be enforced?

Watershed, it is our drinking supply.

''The connectivity of the stream system is the primary reason for doing aquatic assessments at the watershed level. Connectivity refers to the physical connection between tributaries and the river, between surface water and groundwater, and between wetlands and water. Because water moves downstream, any activity that affects the water quality, quanity, or rate of movement at one location can affect locations downstream. For this reason, everyone living or working within a watershed needs to cooperate to ensure good watershed conditions.'' (http://www.co.yamhill.or.us/ybc/defnWS.htm)

In other words, we ultimately drink from the same supply that handles sewage and industrial effluent, and every other kind of toxin that gets washed off our city streets as well as the pesticides drained out of farmers' fields across the world.

First answer by Perrence. Last edit by Perrence. Contributor trust: 133 [recommend contributor]. Question popularity: 132 [recommend question]