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Sources of Fresh Water in Environmentl Engg.

By: Haseeb Jamal / On: Mar 24, 2017 / Notes, Shallow
 
 

Flowchart of the sources of clean drinking water

Sources of Water

WasteWater Treatment Disposal & Management

The quantity of water required for a community depends upon:

  1. Forecasted population
  2. Types and variation in demand (e.g. seasonal variation)
  3. Maximum demand (Per day/Per month)
  4. Fire demand
  5. Rural demand and supplies
  6. Appropriate / Available technology

Main sources of water are

  • Surface water sources: Lakes impounding reservoirs, streams, seas, irrigation canals
  • Ground water sources: Springs, wells, infiltration wells

Above are the common sources of clean drinking water, other different sources of drinking water are

Lab Experiments on Water

Merits of surface sources

Merits of ground water sources

  1. Being underground, the ground water supply has less chance of being contaminated by atmospheric pollution.
  2. The water quality is good and better than surface source.
  3. Prevention of water through evaporation is ensured and thus loss of water is reduced.
  4. Ground water supply is available and can even be maintained in deserted areas.
  5. The land above ground water source can be used for other purposes and has less environmental impacts.

Demerits of ground water source

  1. The water obtained from ground water source is always pressure less. A mump is required to take the water out and is then again pumped for daily use.
  2. The transport / transmission of ground water is a problem and an expensive work. The water has to be surfaced or underground conduits are required.
  3. Boring and excavation for finding and using ground water is expensive work.
  4. The modeling, analysis and calculation of ground water is less reliable and based on the past experience, thus posing high risk of uncertainty.

Demerits of surface source

     

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