Assessment of groundwater quality in salem district using gis techniques

Groundwater plays a crucial role in the water supply system for domestic, irrigation and industrial purposes all over the world, due to the rapid increase in population and an insufficient source of freshwater. It is assessed that around 65% of groundwater is utilized for drinking, 20% for agricultural and 15% for industrial purpose in the world. As per the United Nations Environment Program (UNEP), 33% of the total common people depend upon groundwater for drinking especially in India and China. The total population raises generally at the rate of 80 million every year. Because of the expansion in population, different style of water utilization was increased in the last 50 years (Dipankar et al. 2011; Srinivasa et al. 2005; Peiyue et al. 2013 and Shah et al. 2013). Consistently freshwater demand increased by 64 billion cubic meters. The lifestyle and sustenance style of individuals around the earth is the dominant fact in charge of the expansion in water utilization per capita.

Additionally, urbanization, growth of industries, utilization, and relocation are the factors that assumes a key role in the consumption of the freshwater assets. Bio-fuel generation is a vital factor which causes an expansion in water request as of late. Around 1000-4000 liters of fresh water is required to produce one liter of bio-fuel. Physical measures of water quality are those that measure generally speaking properties without explicitly distinguishing constituent species present. Physical observations of water quality incorporate temperature, pH, turbidity, total suspended solids, electrical conductivity (EC).