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Pollution Summary 2023

Here are all the reported sewage overflow totals for River Thames in 2023. Sometimes sewage can be being dumped for months at a time.

These numbers are very slightly different from the Rivers page. We're working on it.

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Thames Water	River Thames	CRICKLADE WWTW	114	1,482	100
Thames Water	River Thames	BRIXTON STORM RELIEF SEWER, LONDON	130	914	96.6
Thames Water	River Thames	SLOANE STREET, RANELAGH GDNS, LONDO	83	766	89.73
Thames Water	River Thames	HATCHETTS SPS	31	477	94.2
Thames Water	River Thames	LONG REACH WWTW	42	407	99.8
Thames Water	River Thames	SW STORM RELIEF SEWER, LONDON	32	394	90.9
Thames Water	River Thames	HAMBLEDON SEWAGE TREATMENT WORKS	20	334	100
Thames Water	River Thames	DEPTFORD STORM RELIEF, LONDON	41	171	98.8
Thames Water	River Thames	IRONGATE SEWER, LONDON	76	156	99.7
Thames Water	River Thames	HEATH WALL PS, LONDON	43	135	100
Thames Water	River Thames	FLEET MAIN LINE SEWER, LONDON	71	117	79.07
Thames Water	River Thames	HAMMERSMITH PS, LONDON	29	107	91.6
Thames Water	River Thames	EARL PS STORM OUTLET, LONDON	30	94	100
Thames Water	River Thames	COUNTERS CREEK, LOTS ROAD PS, LONDO	21	76	100
Thames Water	River Thames	FALCON BROOK PS, LONDON	34	75	99.7
Thames Water	River Thames	WESTERN PS LOW LEVEL SEWER, LONDON	22	74	99.7
Thames Water	River Thames	CHARLTON STORM RELIEF, LONDON	9	41	84.97
Thames Water	River Thames	NORTHUMBERLAND STREET, LONDON	19	41	95.7
Thames Water	River Thames	PETERSHAM ROAD CSO	21	35	98.3
Thames Water	River Thames	HORSEFERRY ROAD SEWER, LONDON	25	35	96.7
Thames Water	River Thames	GREENWICH PS, GREENWICH, LONDON	5	30	99.9
Thames Water	River Thames	CLAPHAM STORM RELIEF SEWER, LONDON	22	28	100
Thames Water	River Thames	REGENT STREET, LONDON	13	28	99.1
Thames Water	River Thames	KINGS SCHOLARS POND SEWER, LONDON	16	27	84
Thames Water	River Thames	LOWER THAMES STREET, BEER LANE, LON	36	26	100
Thames Water	River Thames	TIDEWAY COMBINED SEWER OVERFLOW	4	20	100
Thames Water	River Thames	SMITH STREET, LONDON	23	19	90
Thames Water	River Thames	WOOD STREET, LONDON	13	19	99.8
Thames Water	River Thames	SHAD, THAMES PS, LONDON	10	17	100
Thames Water	River Thames	NORFOLK STREET, LONDON	10	14	99.5
Thames Water	River Thames	CSO AT PORTSMOUTH/UXBRIDGE ROAD	5	5	97.8
Thames Water	River Thames	STAMFORD BROOK, HAMMERSMITH, LONDON	5	4	99.8
Thames Water	River Thames	CHURCH STREET SEWER, LONDON	7	2	99.8
Thames Water	River Thames	WANDLE VALLEY, LONDON	1	2	99.9
Thames Water	River Thames	PUTNEY BRIDGE STREET, LONDON	11	2	94.9
Thames Water	River Thames	NW. RELIEF SEWER, LOWER MALL, LONDO	2	1	94.2
Thames Water	River Thames	HOLLOWAY STORM SEWER, LONDON	2	1	95.5
Thames Water	River Thames	GOSWELL STREET, S. BRANCH SEWER, LO	5	1	73.4
Thames Water	River Thames	LOW LEVEL 1, LOWER MALL, LONDON	5	1	100
Thames Water	River Thames	QUEEN STREET, LONDON	2	0	96.5
Thames Water	River Thames	ISLE OF DOGS PUMPING STATION CSO	4	0	100
Thames Water	River Thames	LITTLE MARLOW STW ( WOOBURNVALLEY )	0	0	99.8
Thames Water	River Thames	SAVOY STREET, LONDON	0	0	0
Thames Water	River Thames	Mackney Lane (Main)	0	0	0
Thames Water	River Thames	GORING WASTEWATER TREATMENT WORKS	0	0	98.9
Thames Water	River Thames	Long Lane	0	0	0
Thames Water	River Thames	WAPPING DOCK, GUN WHARF, LONDON	0	0	100
Thames Water	River Thames	WEST PUTNEY RELIEF SEWER, LONDON	0	0	0

River Thames polluted by sewage 1,094 times in 2023 - lasting 6,195 hours

41 Sites polluted by Thames Water

Pollution Summary 2023

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