| Percent Violations Over the Desired Level - A, B, C Class of Water in River Brahmaputra and its Tributaries (1998) | ||||
| Location | pH | Dissolved Oxygen | Biochemical Oxygen Demand | Total Coliform |
| River : Brahmaputra | ||||
| State : Assam | ||||
| Dibrugarh | ||||
| Nimatighat | ||||
| Pandu | ||||
| Jogijhoga Near Bridge | ||||
| River : Burhidihing | ||||
| State : Assam | ||||
| Margherita | ||||
| River : Dhansiri | ||||
| State : Assam | ||||
| Golaghat | ||||
| River : Disang | ||||
| State : Assam | ||||
| Gundamghat | ||||
| River : Gumti | ||||
| State : Tripura | ||||
| U/s South Tripura | ||||
| D/s South Tripura | ||||
| River : Jhanji | ||||
| State : Assam | ||||
| N.H. Crossing Jorhat | ||||
| River : Subhansiri | ||||
| State : Assam | ||||
| Gerekamukh, Assam (Before Confl. With Brah.) | ||||
