1 | Investigation into the impact of Henstridge sewage treatment works on the River Umber, North Devon |
2 | Biological investigation into the impact of the storm overflow at Middle Marwood Sewage Treatment Works |
3 | Investigation into the storm overflow discharge regime of Hill Barton Seawage Treatment Works Okehampton |
4 | Impact assessment of Helston Sewage Treatment Works on water quality of the River Cober Loe Pool |