| Percent Violations Over the Desired Level-A,B,C Class of Water in River Cauvery and its Tributaries (1998) | ||||
| Location | pH | Dissolved Oxygen | Biochemical Demand | Total Coliform |
| River : Cauvery | ||||
| State : Karnataka | ||||
| Napokulu Bdg (D/s) | ||||
| Kushal Nagar U/s (near Baichanahalli) | ||||
| D/s of Karekuara Village | ||||
| Sri Rangapattanna, D/s of Road Bdg. | ||||
| KRS Dam, Balamurikshetra | ||||
| Sathyagalam Bridge | ||||
| State : Tamil Nadu | ||||
| Mettur | ||||
| 1km. D/s of Bhavani River Confl. | ||||
| Pallippalayam | ||||
| Erode Near Chirapalayam | ||||
| Velore Near Kattipalayam | ||||
| Mohanur Near Pattaipalayam | ||||
| Thirumukkudal-Confl. Pt. of R. Amravati | ||||
| Musiri | ||||
| Tiruchirappalli U/s | ||||
| Tiruchirappalli D/s | ||||
| Trichy, Grand Anaicut | ||||
| Coleroon Branch at Border | ||||
| Coleroon Branch at Pitchavaram | ||||
| River : Amravati | ||||
| State : Tamil Nadu | ||||
| 1km D/s from Eff. Dis. Pt. at Madhuthukkulam | ||||
| River : Arkavati | ||||
| State : Karnataka | ||||
| D/s of Kanakapura Town | ||||
| River : Bhavani | ||||
| State : Kerala | ||||
| Elachivazhy | ||||
| State : Tamil Nadu | ||||
| Pathirakaliamaman Koil | ||||
| Bhavani | ||||
| Sirumugai | ||||
| Bhavani Sagar | ||||
| River : Kabbani | ||||
| State : Kerala | ||||
| Muthankara | ||||
| State : Karnataka | ||||
| Saragur Village D/s | ||||
| Cause Way Sattur | ||||
| Water Intake of Kiadb at Nanjangud | ||||
| River : Lakshmantirtha | ||||
| State : Karnataka | ||||
| D/s of Hunsur Town | ||||
| River : Shimsha | ||||
| State : Karnataka | ||||
| D/s of Highway Bridge, Yediyar | ||||
| D/s of Bridge, Halagur | ||||
