Assessment of Heavy Metals in Water of Rajajinagar, Bangalore

Abstract

Water is the source of life, although earth contains 71% of water only 3% is fresh and potent which includes ground water, groundwater is the principle source of drinking water in most parts of urban areas and metropolitans. Rajajinagar, Bangalore has a huge valley of industries which are the source of wastewater generation ,  heavy metals like( Pb, Cr, Ni, Fe, Cu)  from the waste water pollute the groundwater directly or indirectly that have and adverse effect on human and animal life .A study was conducted in and around Rajajinagar and from the various stations set across Rajajinagar  to test pH, electrical conductivity, TDS (Total Dissolved Solids) ,Chlorides ,Sulphates and heavy metals such as Copper, Zinc, Nickel, Cadmium, Lead in groundwater. Around 21 samples of groundwater were  taken in  polythene  containers  of  1  litres capacity  for  the chemical  analysis and  it was concluded that the groundwater of Rajajinagar has pH, Calcium, Sulphates, Carbonates and Bicarbonates, Sodium, TDS and Copper within the permissible limit , while Magnesium, Chloride, Nickel and Iron are not within the permissible limits according to the BIS standards. The Lead and Copper levels are above the WHO standards for heavy metals in groundwater. Hence, effective treatment methods can be determined to treat the wastewater before supplying it for domestic and other purposes.