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Essay On Water Supply

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The only way water supply can be controlled in such regions is through storage.it can either be on the surface or subsurface.in fact, ground water storage is superior to conventional dams, because it would use little surface land and cause no environmental damage with much less evaporation losses.
2.4.1 NATURAL RECHARGE:
Natural recharge may come from several sources: deep percolation of precipitation, percolation of water through streambeds, and subsurface inflow from adjacent formations.
Advantages of the underground storage
• Little or no evaporation
• Requires no construction
• Large storage capacity
• No interfere with land use
• Less vulnerable to contamination
• Less vulnerable to drought

Factors before the choice of storage …show more content…
• Problem with injecting: potentially high energy cost of pumping water down under high pressure. And it Might need treatment.

Objectives of artificial recharge:
• Conserve and dispose of runoff and floodwaters.
• Reduce, balance or reverse saltwater intrusion
• Store water to reduce costs of pumping and piping.
• Store water during cold seasons for use during growing seasons
• Conserve energy in groundwater geothermal applications
• Improve water quality by removing suspended solids by filtration through the ground.
Disadvantages:
• Not all water added can be recovered
• The area required for operation and maintenance of groundwater supply system is generally larger than that required for a surface water supply system
• Salts of calcium, Magnesium, iron, manganese, or other elements in in the recharge water cannot be readily.
• Clogging of aquifers is difficult to remedy
• Sudden water supply demands may not be met because ground water reservoirs are not as easily drained as their surface water

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