Sources of water supply
Sources of water supply
In water treatment process, it is important to know the origin of the raw water affects both the quantity and quality of raw water to be treated. There are two main sources: surface water and ground water.
Global Water Distribution
Surface Water
Water reaching the water body e.g. a reservoir is also subject to changes in its quality. By mixing with the reservoir water, the poor quality of surface water is diluted. The quiescent condition in the reservoir allows suspended material to settle and the water improves in turbidity. Organisms in the reservoir can oxidize materials that might give rise to color, taste, and odor. Algae may thrive in reservoirs where runoff contains high concentrations of nutrients and can cause taste and color problems. Anaerobic bacteria may dwell in the