Water Abstraction and Raw Water Transfer
Raw water (untreated) is collected from a surface water source (such as an intake on a lake or a river) or from a groundwater source (such as a water well drawing from an underground aquifer) within the watershed that provides the water resource.
Shallow dams and reservoirs are susceptible to outbreaks of toxic algae, especially if the water is warmed by a hot sun. The bacteria grow from storm water runoff carrying fertilizer into the river where it acts as a nutrient for the algae. Such outbreaks render the water unfit for human consumption.
The raw water is transferred to the water purification facilities using uncovered aqueducts, covered tunnels or underground water pipes.
Read more about this topic: Water Supply Network
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