Water Quality Standards for various uses of water

BIS (IS: 10500: 1991) for Drinking water, Irrigation water, industrial effluent (IS : 2490, Part-I-1981), Effects of water quality parameters of water being used in industries

Water Quality Assessment Authority (WQAA)
http://wqaa.gov.in/reports/WaterQualityStandards.pdf

Georaphical Spread