What are the properties of arsenic?
1.2 How are arsenic levels measured?
2.1 What are the natural sources of environmental arsenic?
2.2 What are the man-made sources of environmental arsenic?
2.3 How is arsenic transported and distributed in the environment?
Arsenic is a semi-metal element in the periodic table. It is odorless and tasteless. It enters drinking water supplies from natural deposits in the earth or from agricultural and industrial practices.