Click table column heading to sort
| Test from | Result | by | type | date | time |
|---|---|---|---|---|---|
| Merthyr Mawr Sinks | + | WWA | bacteriophage | 1989 | 10 hrs |
| Tymaen Sink | + | WRC | fluorescein | 1988 | 5 hrs |
| River Ogmore M4 Sink | + | WWA | bacteriophage | 1989 | 23 hrs |
| River Ogmore Sink | + | WWA | bacteriophage | 1986 | 11 hrs |
| River Ewenny Fach | + | WWA | bacteriophage | 1989 | |
| River Ewenny Fach | - | WRC | fluorescein (7 kg) | 1988 | |
| River Ewenny Fach | - | WRC | fluorescein (14 kg) | 1988 |