ARSENIC POLLUTION IN WATER RESOURCES OF MIDDLE GANGA PLAIN OF UTTAR PRADESH. INDIA

Arsenic Concentration in Middle Ganga Plain of Uttar Pradesh (U.P.) (From district Kanpur to district(dist.) Ballia estimated by Field testing kit (Merc) and Atomic Absorption Spectroscopy Method . Estimation carried out on Ganga River water , Tube well water(120m deep), India Mark II Hand pump (45 m deep), Private Hand pump (20m deep ), Dug well(10m Deep), Dug pit water (1m deep), dig by local people in active river valley for irrigation of summer crop sown on river sand .The highest concentration (27.22ug/l) recorded on left bank of Ganga river water at Confluence of River Ganga and River Jamuna in Allahabad and lowest at Chunar ( 0.10ug/l) There is a increase of arsenic concentration in downstream of Ganga River from dist. Kanpur to dist. Ballia. Arsenic concentration in private hand pump (0.89 ug/l in Allahabad to 688ug/l in Ballia)and in India mark II As concentration ranges 0.40ug/l to 658ug/l , a number of hand pump in Ghazipur and Ballia dist are discharging contaminated water that is above permissible limit(10ug/l).Though dug wells are recorded comparatively less concentration (2.43ug/l to 10.5ug/l) , except Ballia where As concentration in dug wells ( ranges 14.25ug/l to 164ug/l) . Dug pit water has As concentration (15ug/l - 25ug/l). The present study concluded that the Arsenic concentration in controlled by Monsoon precipitation , River discharge , low –high temperature, humidity, river valley geomorphology, geology of bank on which town/ city is situated and anthropogenic input (urban effluent), agriculture practices and religious traditions. Most of the contaminated source are located near still water bodies on active flood plain containing decaying organic waste inside the river valley.