Arsenic and physico-chemical calamity in the ground water samples of Ballia district ,Uttar Pradesh, India

The level of arsenic contamination in ground water quality in and around ballia district was elucidated. the study revealed that most of the locations, the concentration of arsenic ranged from 0.01 to 0.05 mg/l (avg 0.03 ± 0.01 mg/l); which is higher than the permissible limit 0.01 mg/l. the physico-chemical parameters were recorded such as hardness 180 to 220 mg/l (avg 199.10 ± 12.62 mg/l), alkalinity 84 to 112 mg/l (avg 96.40 ± 7.88 mg/l), tds 225 to 605 mg/l (avg 295.85 ± 87.55 mg/l), conductivity 340 to 916 μs/cm (avg 447.90 ± 132.47 μs/cm), chloride 12.12 to 36.36 mg/l (avg 18.38 ± 7.03 mg/l), ph 7.40 to 7.80 (avg 7.51 ± 0.10), phosphate 0.05 to 0.44 mg/l (avg 0.16 ± 0.10 mg/l), sulphate 3.20 to 12 mg/l (avg 5.86 ± 2.22 mg/l), salinity 0.20 to 1.10 ppt (avg 0.27 ± 0.20 ppt), nitrate 3.06 to 7.64 mg/l (avg 5.11 ± 1.34 mg/l) and fluoride 0.21 to 1.19 mg/l (avg 0.61 ± 0.24 mg/l). the escherichia coli and coliform mpn number also found in the within the limit (<3/100 ml) except at chandpur (23/100 ml), hanumangunj (9.1/100 ml), bansdih (3.6/100 ml) and tika dewari (460/100 ml).