1 | The effects of ammonia in discharges from Hogsmill Valley sewage treatment works on the water quality of the River Thames at Teddington |
2 | Water quality in Anglian Region : the first five years |
3 | Impact assessment of Helston Sewage Treatment Works on water quality of the River Cober Loe Pool |
4 | Investigation into failures of the River Dalch from Canns Mill Bridge to below Lapford sewage treatment works (2001) |