Constituents Units Con. Level 1. Colour - Normal 2. Temperature - - 3. Suspended solid - - 4. PH - 6.5 6.8 – 5. Dissolved Oxygen Mg/L More than 5 6. B.O.D.5 " Less than 3 7. C.O.D. (Cr207method) " - 8. Cyanide CN- " 0.02 " 0.02 or more as naturally 9. Fluoride F- present 10. Free chlorine " Trace " 200 or more as naturally 11. Chloride present 12. Phenol " 0.005 " 200 or more as naturally 13. Sulfate present 14. Nitrate (No3) " 15 15. Phosphate (Po4) " 0.4 16. Ammonium (NH4) " 1.0 17. DDT " N.L. 18. Lead (pb) " 0.05 19. Arsenic AS " 0.05 20. Copper Cu " 0.05 21. Nickel Ni " 0.1 22. Selenium Se " 0.01 23. Mercury Hg " 0.001 24. Cadmium Cd " 0.005
Constituents Units Con. Level 1. Colour - Normal 2. Temperature - - 3. Suspended solid - - 4. PH - 6.5 – 6.8 5. Dissolved Oxygen Mg/L More than 5 6. B.O.D.5 " Less than 3 7. C.O.D. (Cr207method) " - 8. Cyanide CN- " 0.02 9. Fluoride F- " 0.02 or more as naturally present 10. Free chlorine " Trace 11. Chloride " 200 or more as naturally present 12. Phenol " 0.005 13. Sulfate " 200 or more as naturally present 14. Nitrate (No3) " 15 15. Phosphate (Po4) " 0.4 16. Ammonium (NH4) " 1.0 17. DDT " N.L. 18. Lead (pb) " 0.05 19. Arsenic AS " 0.05 20. Copper Cu " 0.05 21. Nickel Ni " 0.1 22. Selenium Se " 0.01 23. Mercury Hg " 0.001 24. Cadmium Cd " 0.005