Besides petroleum products below the earth , 97 percent of water is saline on the surface of the earth and major portion of water is obtained from water reserves below the ground. Excessive use of water results in lowering of water table and rocks below the earth surface which were submerged in water layers get exposed and release different heavy metals. Like arsenic is released in wells of Kolkatta region and elswhere as per some reports.

Fluoride levels are rising in Rajasthan and many wells have water which is not drinkable. Deep boring facility has resulted in wells as deep as 300 to 1500 m and many a times they give saline water. The farmers which depended on rainfel crops in Nagore and other North western districts of Rajasthan started using deep well water which was saline and their soil was completely destryoed due to heavy depostion of salts which also destroyed soil structure. Now a days they are cursing the advent of electricity and deep borewell machines.

Water harvesting systems are unknown for India in rural as well as urban areas.

Almost all the rain water is drained off. Catchmets area of rain water for the lakes has been encroached by colonizers in Udaipur and Jaipur and at almost all other places including mavtha or small lake of Amber. Silting has almost choked the lakes. Ramgarh lake of Jaipur which provided water to the city for over 100 years is dry.

With population pressure increasing day by day the problem which India faces is not pollution but environment but the pollution of water resources and unless recycling is done ground water reserves are not going to last more than 25 years . With dams getting dry , and ground water non existent, shall India start importing ground water also. Its impossible to import water if you don't have it. Civilizations have been lost once the water was gone.

Keep water reservoirs intact. Protect vegetation which helps in recycling of water. Raise ecofriendly crops and not rice and cotton. Manage water. Manage life before its too late to recover.