Region

Sample-1

Samlpe-2

Sample-3

Average

Sadar

2836 mg/L (1000 feet deep supply water sample)

14180 mg/L (500 feet deep motor water sample)

4963 mg/L (450 feet deep tube well water sample)

7326.33 mg/L

Kabirhat

1063.5 mg/L (60 feet deep tube well water sample)

2127 mg/L (70 feet deep tube well water)

709 mg/L (150 feet deep tube well water)

1299.83 mg/L

Chatkhil

354.5 mg/L (35 feet deep tube well water sample)

177.25 mg/L (256 feet deep tube well water sample)

177.25 mg/L (800 feet deep tube well water sample)

236.33 mg/L