River Thames polluted by sewage 669 times in 2022 - lasting 3,083 hours

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Contains OS Data © Crown copyright & database right 2021-2022
© Top of the Poops 2021-2023

Pollution Summary 2022

Here are all the reported sewage overflow totals for River Thames in 2022. Sometimes sewage can be being dumped for months at a time.

These numbers are very slightly different from the Rivers page - This is because there is an invalid grid reference on the pollution consent - so we don't know where the CSO is. We're working on it.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Thames Water River Thames BRIXTON STORM RELIEF SEWER, LONDON 68 487 99
Thames Water River Thames CRICKLADE WWTW 56 297 84.2
Thames Water River Thames SLOANE STREET, RANELAGH GDNS, LONDO 41 285 93.03
Thames Water River Thames PUTNEY BRIDGE STREET, LONDON 85 250 96.5
Thames Water River Thames DEPTFORD STORM RELIEF, LONDON 47 215 99.5
Thames Water River Thames LOW LEVEL 1, LOWER MALL, LONDON 11 183 50.1
Thames Water River Thames GREENWICH PS, GREENWICH, LONDON 19 169 91.6
Thames Water River Thames PETERSHAM ROAD CSO 16 134 99.2
Thames Water River Thames FALCON BROOK PS, LONDON 27 125 100
Thames Water River Thames CHARLTON STORM RELIEF, LONDON 27 123 87.47
Thames Water River Thames HORSEFERRY ROAD SEWER, LONDON 11 85 92.2
Thames Water River Thames SW STORM RELIEF SEWER, LONDON 27 77 77.7
Thames Water River Thames HAMMERSMITH PS, LONDON 15 70 100
Thames Water River Thames WESTERN PS LOW LEVEL SEWER, LONDON 12 62 100
Thames Water River Thames COUNTERS CREEK, LOTS ROAD PS, LONDO 15 61 100
Thames Water River Thames EARL PS STORM OUTLET, LONDON 12 59 100
Thames Water River Thames HEATH WALL PS, LONDON 21 58 100
Thames Water River Thames LONG REACH WWTW 8 58 99.9
Thames Water River Thames FLEET MAIN LINE SEWER, LONDON 14 48 92.13
Thames Water River Thames TIDEWAY COMBINED SEWER OVERFLOW 7 35 100
Thames Water River Thames STAMFORD BROOK, HAMMERSMITH, LONDON 11 24 99.8
Thames Water River Thames CLAPHAM STORM RELIEF SEWER, LONDON 13 22 99.8
Thames Water River Thames NORFOLK STREET, LONDON 6 22 97.1
Thames Water River Thames REGENT STREET, LONDON 8 20 99.8
Thames Water River Thames SAVOY STREET, LONDON 11 17 96.6
Thames Water River Thames LOWER THAMES STREET, BEER LANE, LON 18 14 99.9
Thames Water River Thames IRONGATE SEWER, LONDON 11 12 87.1
Thames Water River Thames NORTHUMBERLAND STREET, LONDON 7 12 98.3
Thames Water River Thames SHAD, THAMES PS, LONDON 8 10 94.4
Thames Water River Thames WOOD STREET, LONDON 7 9 99.3
Thames Water River Thames SMITH STREET, LONDON 10 8 99.1
Thames Water River Thames NW. RELIEF SEWER, LOWER MALL, LONDO 5 3 92.3
Thames Water River Thames GOSWELL STREET, S. BRANCH SEWER, LO 2 3 92.7
Thames Water River Thames CHURCH STREET SEWER, LONDON 5 3 100
Thames Water River Thames CSO AT PORTSMOUTH/UXBRIDGE ROAD 3 2 98.1
Thames Water River Thames QUEEN STREET, LONDON 2 1 96.9
Thames Water River Thames ISLE OF DOGS PUMPING STATION CSO 3 0 100
Thames Water River Thames WANDLE VALLEY, LONDON 0 0 99.1
Thames Water River Thames LITTLE MARLOW STW ( WOOBURNVALLEY ) 0 0 100
Thames Water River Thames GROSVENOR DITCH, LONDON 0 0 0
Thames Water River Thames KINGS SCHOLARS POND SEWER, LONDON 0 0 0
Thames Water River Thames GORING WASTEWATER TREATMENT WORKS 0 0 100
Thames Water River Thames HATCHETTS SPS 0 0 0
Thames Water River Thames Long Lane 0 0 0
Thames Water River Thames WAPPING DOCK, GUN WHARF, LONDON 0 0 99.7
Thames Water River Thames HOLLOWAY STORM SEWER, LONDON 0 0 0
Thames Water River Thames KING EDWARD MEMORIAL PARK, LONDON 0 0 0
Thames Water River Thames WEST PUTNEY RELIEF SEWER, LONDON 0 0 0
Thames Water River Thames Mackney Lane (Main) 0 0 0
Thames Water River Thames HAMBLEDON SEWAGE TREATMENT WORKS 0 0 100

Data Sources & Accuracy

EDM (Event Duration Monitoring) data and Consented Discharges to Controlled Waters with Conditions from Environment Agency & Data Map Wales

Experimental derived data from Thames Water API, Some data may be missing or inaccurate. This uses Environment Agency rainfall data from the real-time data API (Beta) - Rainfall data is delayed by up to two days.

This website is intended to provide an accurate representation of the Environment Agency data. The data is hard to use, and thus some errors may have been made. If you find something that is incorrect, please raise an issue at the GitHub issues page and we'll endeavour to fix it quickly.

This project is not associated, approved or endorsed by any of the companies whose logos you see here.