Importance of Fresh Water Essay

All living things on Earth need fresh water in order to survive tho human beings become ill and may even die if they cannot get pure or clean and are forced to drink polluted water. benignant beings can only last 3 day without fresh water. People died of thirst after the cyclone in 1999 because their supply of fresh water from irrigation channels was washed-up form tidal waves. tho water is needed for many another(prenominal) to a greater extent purposes e.g. in agriculture and industries, but this water does not need to be fresh. patronage this there are still serious shortages in many countries for the purposes other than crapulence.CAUSES FOR SHORTAGE OF WATER1 The increases in populations, industries and irrigationThe growth of population in many countries means that more water is required. The growth of population leads to the need for more uprights and food. This leads to the increase in industries and in irrigated farmland. This means more water is required.2 The conta minant of fresh water suppliesEven if there is sufficient fresh water in a country it may not all be good for drinking. Many villages in Pakistan depend on wells and rivers for their fresh drinking water. However chemicals used in the fields by farmers pollute some of these drinking water supplies.3 the problems of the supply of fresh waterProblems of the supply of fresh water in both rural and urban areas exist in the countries and in some countries.a) Fresh Water Supplies In Rural AreasIn many rural areas in Pakistan and other countries there are no pipes o swing water to peoples homes or to their villages. Women and children may walk a long way each day to get their water.b) Fresh Water Supplies In Urban AreasMany villages have no piped water supply. But there are often serious problems of the supply of water even in urban areas where there are water pipes. This because of lack of distribution and transmission networks,leakages and power failures at pumping stations and because of rampant corruption in KWSB. It is also because hydrant owners keep up to defy government regulations.Possible solutions for shortage of water in PakistanTreatment of sewageIt has been suggested that water suitable for industry and agriculture could be provided by treating sewage. However this would require a new and separate network of pipes which would be expensive to construct.Desalination of sea waterThis suggestion was rejected up to 2004 because of the high greet of building the desalination plants. However, in 2004 plans were announced to build Pakistans first desalination plants at Korangi Creek in Karachi and near Port Qasim.Disadvantage of desalination processEven though the desalination process benefits us, it can also harm the environment on the other hand. It cost too much gold to pay for the plants. It reduces oxygen levels in the air and results in an increase of the density of any discharged waste water. Its unlimited source of water make more green house gasses so there for more pollution in the atmosphere .It doubles the amount of salt in the oceans and impacts on the environment for animals and humans.