Ground Water Pollution by Arsenic

Abstract An acid-arsenic sludge mixed with lime have been deposited in a landfill. To check the ground water quality shallow pipes were used for sampling. When an increased arsenic content was indicated by this sampling, boreholes were drilled which allowed sampling of soil and water at every meter throughout the 15 meter thick layer of sand. The arsenic content of the ground water was a maximum of 2890 mg As/l and the lowest pH was 1.2. The polluted water moves along the bottom of the aquifer. To reduce the polluted area ground water is pumped up for further treatment. For future checks on ground water multi-level monitoring pipes have been installed.