Parameters for Regular Monitoring of Drinking Water Supplies (1)

If we talk about the levels that are considered safe for heavy metals(in mg/l ) then they are as follows:

1. Mercury - 0.001

2. Zinc - 5.0

3. Cadmium - 0.01

4. Copper - 1.0

5. Chromium - 0.05

6. Iron - 0.3

7. Manganese - 0.1

8. Lead - 0.05

9. Arsenic - 0.05

10. Selenium - 0.01

11. Barium - 1.0