| Standards for Discharge of Sewage in India (February, 2005) | ||||
| Parameter | Standards | |||
| Inland surface water | Public sewers | Land for irrigation | Marine/coastal areas | |
| Suspended solids mg/l, max. | ||||
| Particle size of suspended solids | ||||
| pH value | ||||
| Temperature | ||||
| Oil & grease, mg/l max. | ||||
| Total residual chlorine, mg/l max. | ||||
| Ammonical nitrogen (as N); mg/l, max. | ||||
| Total kjeldahl nitrogen (as N); mg/l, max. | ||||
| Free ammonia (as HN3), mg/l, max | ||||
| Biochemical oxygen demand (3 days at 270C), mg/l, max | ||||
| Chemical oxygen demand, mg/l, max | ||||
| Arsenic (as As). | ||||
| Mercury (As Hg), mg/l max. | ||||
| Lead (as Pb) mg/l max. | ||||
| Cadmium (as Cd) mg/l, max | ||||
| Hexavalent chromium (as Cr + 6) mg/l max. | ||||
| Total chromium (as Cr) mg/l, max. | ||||
| Copper (as Cu) mg/l, max | ||||
| Zinc (as Zn) mg/l, max | ||||
| Selenium (as Se) | ||||
| Nickel (as Ni) mg/l, max. | ||||
| Cyanide (as CN) mg/l, max. | ||||
| Fluoride (as F) mg/l, max. | ||||
| Dissolved phosphates (as P), mg/l, max. | ||||
| Sulphide (as S), mg/l, max. | ||||
| Phenolic compounds (as C6H50H) mg/l, max. | ||||
| Radioactive materials: | ||||
| (a) Alpha emitters micro curie mg/l, max. | ||||
| (b) Beta emitters micro curie mg/l | ||||
| Bio-assay test | ||||
| Manganese | ||||
| Iron (as Fe) | ||||
| Vanadium (as V) | ||||
| Nitrate Nitrogen | ||||
