Most Cities To Run Dry

Dec. 11, 2009 - PRLog -- A few causes

This crisis is not just the disturbance in the demand and supply curve but is also about mismanagement of water resources.

India's water crisis is a man-made problem. One of the major problems is water pollution.

New Delhi alone produces 3.6 million cubic meters of sewage every day, but because of poor managementm less than half is effectively treated. The remaining untreated waste is dumped into the Yamuna River. Thus a combination of sewage disposal, industrial effluents, and chemicals from farm runoffs, arsenic and fluoride has rendered India's rivers unfit for drinking, irrigation, and even industrial purposes.

Also, the over-usage of ground water due to the unavailability of sufficient water for irrigation has led to a tremendous decrease in the level of ground water.

Also, because of global warming, rainfalls have become erratic and unpredictable because of which the agricultural sector has been affected seriously.

We need to take rational steps to manage water in India before it becomes an international crisis, as this will affect the nation's economy and will also lead to various water-borne diseases.

The reasons for this extreme drop rate lie mainly in the use of groundwater for irrigation, according to B M Jha, chairman of the Indian Central Ground Water Board.

The Central Ground Water Board is the apex national organisation, working under the ministry of water resources and is responsible for various activities related to exploration, development and management of groundwater resources in the country.

In the wake of the Green Revolution, irrigation of cropland in India has taken on a new dimension.         (http://us.travelchacha.com/india-holidays/christmas-holid... )

As the major reasons for the drop in the water table in the north-western part of the country, Jha cites the accompanying gradual change in the cropping pattern from wheat to paddy-grown rice, the latter being a more water intensive crop, as well as the free power or the flat power tariff for running the irrigation pump rigs.

How grave is the crisis?

In India, the groundwater table in some regions is dropping dramatically. A team of researchers led by Matthew Rodell of the Hydrological Sciences Branch of NASA recently measured just how severe the situation is for the states of Rajasthan, Punjab and Haryana (including Delhi).

The results were published in August 2009, in the online edition of the science magazine Nature.

According to these results, the water table in these regions is dropping by 17.7 + 4.5 cubic kilometres annually. During the August 2002-October 2008 study period, the groundwater loss was 109 cubic kilometres.

This corresponds to twice the volume of India's largest surface water reservoir.

Most Indian cities to go dry by 2020

India is expected to experience a severe water crisis by 2020 with the per capita availability of water projected to be less than 1,000 cubic metres.

Indian water scenario was a matter of grave concern, as 85 per cent of water was used for agriculture, 10 per cent for industry and five per cent for domestic use, according to a paper presented at a national symposium in Coimbatore, Tamil Nadu.

Being a developing nation with a large population on the negative side of the poverty line, economic water scarcity (limited access to fresh water because of lower affordability) assumed equal, if not, greater importance as that of physical water scarcity, it said.

Quoting a World Bank study, it said of the 27 Asian cities with population of over 10 lakh (1 million), Chennai and Delhi were ranked as the worst performing metropolitan cities in terms of water availability per day, while Mumbai was ranked as second worst performer, and Kolkata the fourth worst.

Severe water shortage had already led to a growing number of conflicts across the country, with 90 per cent of India's territory served by inter-state rivers.

The row between Karnataka and Tamil Nadu over river Cauvery waters, between Maharashtra and Karnataka over river Godavari, and between Madhya Pradesh and Gujarat over the Narmada waters are some of the confilcts, the paper said.

The conflicts are being bitterly fought at all levels, imposing very high economic environmental costs.

Climate change projections showed India's water problems were only likely to worsen and with more rain expected to fall in fewer days and the rapid melting of glaciers, especially in the western Himalayas, India would need to gear up to tackle increasing incidence of droughts and floods, the paper said.

Global fresh water supplies were continuously stressed by rising demands from growing population and its ever increasing needs for hygiene, sanitation, food and industrial needs.

While the world's population tripled in the 20th century, the use of renewable water resources has grown six-fold and within next 50 years, the world population would increase by another 40 to 50 per cent, it claimed.

On water facts, the paper said that a billion people in the world do not have access to safe water, which was roughly one sixth of the world's population.

About 1.8 million people died every year as a result of diseases caused by unclean water and poor sanitation, which amounted to around 5,000 deaths a day.

The simple act of washing hands with soap and water can reduce diarrhoeal cases by over 40 per cent, since water-related disease was the second biggest killer of children worldwide, after acute respiratory infections like tuberculosis, it said.

Water crisis to affect agri production

Water crisis is sure to lead to a sharp decline in agricultural production, which will negate all of the previous efforts at food security.

India will become a net importer of grain, which will have a huge effect on global food prices, as well as the global supply of food. A rise in food prices will aggravate poverty because people will have to spend larger portions of their income on food.

In addition to devastating the agricultural sector of India's economy, the water crisis will have a big effect on India's industrial sector, possibly stagnating many industries.

India has the power to avoid this dark future if people take action immediately: start conserving water, begin to harvest rainwater, treat human, agricultural, and industrial waste effectively, and regulate how much water can be drawn out of the ground.

Government initiatives

According to the chairman of the Indian Central Ground Water Board, the Indian government has taken various steps to get the groundwater problem under control.
Rainwater harvesting und artificial recharge schemes are playing a major role in this endeavour.

Other important points are capacity building, an awareness campaign on rainwater harvesting and conservation of water resources and regulation of groundwater development in selected areas of the country.

Along with the central government, the state governments are also actively involved in the fight against the dropping water table.

They are offering stimuli to grow crops that require less water, they are placing restrictions on financial institutions providing loans for procurement of submersible pump rigs, and they are trying to stagger the sowing season in such a way as to reduce the peak water demand.

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