The idea that water is fit    to drink or drinkable is not one that most of us routinely think about. The    only types of water we distinguish are tap, spring, mineral, flavoured, or carbonated.    The only time we may have had to distinguish between potable and non-potable    water is on a camping trip or some other outdoor adventure. But the sad fact    is that most of the people on this planet do not have access to water that is    fit to drink. That begs the question: what do they drink then? The obvious answer    is they drink whatever water they can get their hands on.
According to a report by    the Leadership for Environment and Development, by the year 2025, 52 nations    comprising half the world's population, will have a severe shortage of potable    water. In the next 25 years, some 3 billion people will be facing water shortages.
In Pakistan, the vast majority    of the country's 135 million inhabitants do not have access to drinkable water.    Pakistan's attempt to raise the living standards of its citizens has meant that    economic development has largely taken precedence over environmental issues.    Unchecked use of hazardous chemicals, vehicle emissions, and industrial activity    has contributed to a number of environmental and health hazards, chief among    them being water pollution. Much of the country suffers from a lack of potable    water due to industrial waste and agricultural runoff that contaminates drinking    water supplies.
Poverty and high population    growth have aggravated, and to a certain extent, caused, these environmental    problems. This means that most people are forced to use unclean water not only    for all their sanitation needs, farming, and livestock but for drinking as well.
For much of the population,    often there is only one water source. It may be a nearby river or pond, maybe    rain water from a catch basin or a creek. Typically, the water source is used    by both humans and animals. People use it for bathing, washing up, doing laundry,    collecting for cooking, and drinking. Needless to say, the water is anything    but clean.
Drinking water that is unsafe    can, and usually does, lead to all sorts of health-related problems such as    dysentery which is severe, prolonged diarrhea with bloody stools, fever, and    weakness; cholera and typhoid; flukes -- stagnant, polluted water, especially    in tropical areas, often contains blood flukes. If you swallow flukes, they    will bore into the bloodstream, live as parasites, and cause disease; and leeches.    If you swallow a leech, it can hook onto the throat passage or inside the nose.    It will suck blood, create a wound, and move to another area. Each bleeding    wound may become infected.
Pakistan is currently in the midst of what some are saying is the worst water crisis the country has ever seen. The drought affecting the region threatens agricultural output, and levels in the country's reservoirs are dangerously low.
Pakistan is currently in the midst of what some are saying is the worst water crisis the country has ever seen. The drought affecting the region threatens agricultural output, and levels in the country's reservoirs are dangerously low.
The lack of water is taking    on political overtones with parties organizing protests over the issue. One-day    strikes have been called in Karachi to protest water shortages in the province    of Sindh. The protests have been met with harsh responses from local authorities.
While drought and pollution    play a significant role in the lack of safe drinking water, some critics maintain    that a large part of the problem is a result of poor management. By some estimates,    as much as 60% of Pakistan's fresh water is allowed to go wasted, flowing back    into the sea. Only 40% of the water is used.
 It is imperative that Pakistan    seeks out new and cheaper ways to provide safe drinking water for its people.    Some experts have looked at inexpensive desalination techniques, ones that could    be employed on a mass scale. To be sure, this precious commodity, the very lifeblood    of humans, is getting scarcer and scarcer everyday.

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