Research and analysis
B1c: Loads discharged to rivers from water company sewage treatment works in England, 1995 to 2020
Updated 1 December 2025
Download CSV 422 Bytes
| year | pollutant | value |
|---|---|---|
| 1995 | BOD | 35.86 |
| 1995 | Ammonia | 16.75 |
| 1995 | Phosphorus (Actual TP) | 21.18 |
| 2000 | BOD | 29.06 |
| 2000 | Ammonia | 9.62 |
| 2000 | Phosphorus (Actual TP) | 22.73 |
| 2005 | BOD | 22.97 |
| 2005 | Ammonia | 7.32 |
| 2005 | Phosphorus (Actual TP) | 12.77 |
| 2010 | BOD | 21.23 |
| 2010 | Ammonia | 5.27 |
| 2010 | Phosphorus (Actual TP) | 11.16 |
| 2015 | BOD | 20.52 |
| 2015 | Ammonia | 4.79 |
| 2015 | Phosphorus (Actual TP) | 9.54 |
| 2020 | BOD | 22.29 |
| 2020 | Ammonia | 4.17 |
| 2020 | Phosphorus (Actual TP) | 8.34 |