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Bristol

Polluted by sewage 2,677 times in 2025 lasting 5,039 hours

Monitoring fell below 50% in some locations so could be more

© OpenStreetMap contributors
Contains OS Data © Crown copyright & database right 2021-2024
© Top of the Poops 2021-2024

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Totals for Bristol in 2025

155 Sites polluted by Wessex Water
2,677 sewage dumps
5,039 hours duration
That's 7 months. On average 7.3 times a day

Change Over Time

Constituency for Bristol

Nearby Constituencies

Waterways in Bristol

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Pollution Summary 2025

Here are all the reported sewage overflow totals for Bristol in 2025. Sometimes sewage can be being dumped for months at a time.

Reporting refers to how much of the time the monitoring was active. In this place 2 of the total 209 CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway locations had reporting enabled for less than half the year.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Wessex Water Severn Estuary AVONMOUTH STW 67 865 100
Wessex Water Horfield Brook MULLER ROAD CSO 98 375 99.8
Wessex Water River Avon PLIMSOLL STATUE CSO 37 259 100
Wessex Water Horfield Brook WORDSWORTH ROAD ATTENUATION TANK 59 231 100
Wessex Water River Avon Via Sws THE PORTWAY CSO 26 195 100
Wessex Water Horfield Brook Via Sws FILTON AVENUE CSO 80 194 100
Wessex Water Brislington Brook ELLESMERE ROAD CSO 40 169 100
Wessex Water River Trym Via Sws WELLINGTON HILL WEST CSO 45 152 100
Wessex Water Brislington Brook AIRPORT ROAD CSO 31 143 100
Wessex Water River Avon WEST TOWN ROAD PUMPING STATION 55 131 100
Wessex Water River Avon WESTBURY ON TRYM STORM OVERFLOW 36 108 100
Wessex Water River Trym GLENWOOD ROAD CSO 39 93 100
Wessex Water River Trym Via Sws STOKE LANE COMBINED SEWER OVERFLOW 56 83 100
Wessex Water River Trym Via Sws BISHOPTHORPE ROAD CSO 52 74 100
Wessex Water River Avon POLLY BARNES HILL CSO 57 73 100
Wessex Water River Trym Via Sws CHERINGTON ROAD CSO 29 72 49.2
Wessex Water River Avon WEST TOWN ROAD PUMPING STATION 14 65 100
Wessex Water River Avon AVON ROAD PUMPING STATION 26 64 100
Wessex Water River Trym TRYM ROAD CSO 30 62 100
Wessex Water River Avon Via Sws LOWER HIGH STREET CSO 13 59 98.5
Wessex Water River Trym Via Sws HENLEAZE ROAD CSO 30 57 53.2
Wessex Water River Trym Via Sws 11 NEWCOMBE ROAD CSO 27 55 100
Wessex Water Horfield Brook OAKLEY ROAD CSO 45 54 100
Wessex Water Malago HEADLEY ROAD/AVON ROAD 20 52 100
Wessex Water Cranbrook Via Sws CRANBROOK ROAD CSO 42 51 100
Wessex Water River Avon Via Sws 2 CRANBROOK ROAD CSO 48 49 100
Wessex Water River Avon Via Sws MINA ROAD SEWER STORM OVERFLOW 35 47 100
Wessex Water River Avon ASHTON AVENUE PUMPING STATION 23 46 100
Wessex Water River Frome EASTVILLE PARK CSO 13 45 100
Wessex Water River Avon Via Sws PORTWAY COMBINED SEWER OVERFLOW 47 44 100
Wessex Water River Avon Via Sws COTHAM HILL CSO 31 44 100
Wessex Water Brislington Brook, Via Sws UNIT 601/601A CENTRAL PARK CSO 29 43 100
Wessex Water River Avon Via Sws PEMBROKE ROAD CSO 15 43 100
Wessex Water River Trym MERLIN CLOSE CSO 26 36 100
Wessex Water Horfield Brook Via Sws 24 ROWLANDSON GARDENS CSO 11 36 100
Wessex Water River Trym Via Sws 224 HENLEAZE ROAD CSO 38 36 100
Wessex Water Malago MANOR WOOD CSO 16 33 100
Wessex Water River Avon Via Sws STAPLETON ROAD CSO 8 32 71.7
Wessex Water Brislington Brook ST ANNES TERRACE CSO 19 28 100
Wessex Water River Avon Via Sws WHITEHALL ROAD CSO 22 24 100
Wessex Water Malago QUEENS HEAD COMBINED SEWER OVERFLOW 5 23 98
Wessex Water River Avon ST GEORGES PARK 1 CSO 26 21 100
Wessex Water River Avon Via Sws MYRTLE STREET CSO 25 20 96.6
Wessex Water River Avon COTHAM BROW CSO 47 20 100
Wessex Water Bristol Avon Via Sws Estuarine GLOUCESTER ROAD CSO 32 18 100
Wessex Water River Avon [Black Rocks] Sws ALMA ROAD CSO 22 18 100
Wessex Water River Avon Via Sws AVONMOUTH ROAD CSO 36 18 100
Wessex Water River Avon LOWER HANHAM ROAD CSO 26 18 100
Wessex Water River Avon Via Sws HAMPTON ROAD CSO 24 17 100
Wessex Water River Avon BROAD QUAY CSO 3 17 100
Wessex Water River Avon FEEDER ROAD COMBINED SEWER OVERFLOW 5 16 100
Wessex Water River Trym Via Sws DRUID WOOD COMBINED SEWER OVERFLOW 19 16 100
Wessex Water River Frome FRENCHAY PARK ROAD CSO 11 15 100
Wessex Water Horfield Brook Via Sws LANDSEER AVENUE CSO 9 15 100
Wessex Water River Avon COMMERCIAL ROAD CSO 7 15 100
Wessex Water River Trym Via Sws ABBEY ROAD COMBINED SEWER OVERFLOW 28 14 100
Wessex Water River Avon BEECHWOOD AVENUE CSO 23 13 100
Wessex Water River Avon WHITEWAY ROAD COMBINED SEWER OF 28 13 96.6
Wessex Water River Avon Via Sws CUMBERLAND ROAD OLD GAOL SYPHON CSO 3 12 100
Wessex Water River Trym Via Sws WESTBURY ROAD COMBINED SEWER OF 23 11 100
Wessex Water Bristol Avon AVONMOUTH 'B' PUMPING STATION 5 11 100
Wessex Water River Trym Via Sws HENLEAZE ROAD CSO 15 11 100
Wessex Water River Avon HILLBURN ROAD CSO 18 11 100
Wessex Water River Severn Estuary Via Sws THIRD WAY CSO 2 11 89
Wessex Water River Trym Via Sws WESTBURY ROAD COMBINED SEWER OF 10 10 100
Wessex Water Brislington Brook Via Sws BRISLINGTON HILL CSO 11 10 100
Wessex Water River Avon CATTLE MARKET ROAD SIPHON CSO 5 9 100
Wessex Water Strad Brook Via Sws WOOD ROAD COMBINED SEWER OVERFLOW 19 9 100
Wessex Water River Avon QUEEN STREET CSO 26 9 99.8
Wessex Water River Avon Via Sws CENTRAL AVENUE COMBINED SEWER OF 15 9 96.9
Wessex Water River Avon ANSTEY'S RD CSO 17 9 100
Wessex Water River Frome STAPLETON RD AND GLENFROME RD CSO 27 8 95.8
Wessex Water River Trym Via Sws 250 HENLEAZE ROAD CSO 16 8 100
Wessex Water Brislington Brook Via Sws SOMERDALE AV SPRING GARDENS CSO 14 8 100
Wessex Water River Avon Via Sws HUDDS VALE ROAD CSO 28 8 100
Wessex Water River Trym Via Sws SHIREHAMPTON ROAD CSO 29 7 98.7
Wessex Water River Avon BRIDGE VALLEY ROAD CSO 17 7 100
Wessex Water River Avon Via Sws 5 SPRINGFIELD AVENUE CSO 24 7 98.3
Wessex Water Strad Brook BRITANNIA ROAD CSO 5 6 76.6
Wessex Water River Frome Via Sws GREENBANK VIEW CSO 9 6 98
Wessex Water Coombe Brook Via Sws 85 ROSE GREEN ROAD CSO 19 6 100
Wessex Water River Frome THE MANSE CSO 2 6 100
Wessex Water Brislington Brook 424 WELLS ROAD CSO 20 5 95.3
Wessex Water River Trym Via Sws 175 WELLINGTON HILL WEST CSO 11 5 100
Wessex Water River Trym Via Sws EASTFIELD ROAD CSO 24 5 100
Wessex Water Cranbrook Via Sws DEVONSHIRE ROAD CSO 23 5 100
Wessex Water Unknown BIFIELD ROAD CSO 4 5 97.7
Wessex Water River Avon Via Sws BUDE AVENUE FOOTBALL PITCH CSO 16 5 100
Wessex Water Floating Harbour 56 HOTWELL ROAD CSO 7 5 97.3
Wessex Water River Frome Via Sws BROADMEAD CSO 2 4 97.3
Wessex Water Coombe Brook Via Sws FOUNDARY LANE CSO 3 4 96.7
Wessex Water Malago DERHAM ROAD CSO 1 4 100
Wessex Water Cranbrook Brook Via Sws 192 CRANBROOK ROAD 15 4 95.6
Wessex Water Boiling Wells Lane Stream MULLER ROAD ALLOTMENTS CSO 11 4 100
Wessex Water River Avon Via Sws SEA MILLS LANE (PORTWAY BRIDGE) CSO 4 4 100
Wessex Water Floating Harbour AVON STREET CSO 6 4 95.2
Wessex Water River Avon[Black Rocks] CLIFTON DOWN STATION 16 4 99.9
Wessex Water River Avon Via Sws OLD PARK RD COMBINED SEWER OVERFLOW 19 4 100
Wessex Water River Avon AVONMOUTH WAY COMBINED SEWER OF 3 4 76.8
Wessex Water River Avon VICTOR STREET COMBINED SEWER OVERFL 3 4 100
Wessex Water River Frome MULLER ROAD CSO 13 4 100
Wessex Water Warmley Brook Via Sws 48 DOWNEND ROAD CSO 14 3 100
Wessex Water River Avon Via Sws SALISBURY AVENUE COMBINED SEWER OF 15 3 95.9
Wessex Water Pigeonhouse Stream Via Sws FORTFIELD RD CSO 5 3 100
Wessex Water River Avon Via Sws HOLDENHURST ROAD CSO 12 3 100
Wessex Water River Frome CHAPLIN ROAD CSO 5 3 100
Wessex Water River Avon Via Sws NEATH ROAD COMBINED SEWER OVERFLOW 4 2 50.5
Wessex Water River Avon Via Sws WHITBY ROAD COMBINED SEWER OVERFLOW 6 2 100
Wessex Water River Avon Via Sws 30 STATION ROAD CSO 12 2 92.3
Wessex Water River Avon Via Sws 7 SPRINGFIELD AVENUE CSO 12 2 98.5
Wessex Water River Trym Via Sws LAWRENCE GROVE CSO 6 2 100
Wessex Water River Avon Via Sws ST GEORGE'S PARK 2 CSO 12 2 100
Wessex Water River Avon BROOK ROAD COMBINED SEWER OVERFLOW 15 2 100
Wessex Water Cranbrook CAIRNS ROAD COMBINED SEWER OVERFLOW 8 2 100
Wessex Water Coombe Brook OUTSIDE 63 MOORLANDS ROAD 10 1 96.8
Wessex Water River Avon ASHLEY DOWN ROAD ALLOTMENTS CSO 4 1 100
Wessex Water River Avon LOWER CONHAM VALE CSO 8 1 94.7
Wessex Water River Avon Via Sws BISHOPS ROAD CSO 10 1 100
Wessex Water River Frome CHAMPION COURT CSO 2 1 100
Wessex Water River Avon WATLING WAY COMBINED SEWER OVERFLOW 5 1 100
Wessex Water River Avon Via Sws BEDMINSTER ROAD CSO 8 1 100
Wessex Water River Avon CENTRAL TRADING ESTATE PS 2 1 100
Wessex Water Bristol Frome Floating Harbour 98 HOTWELL ROAD CSO 3 1 100
Wessex Water River Avon CENTRAL TRADING ESTATE CSO 8 1 100
Wessex Water River Avon NEW QUEEN STREET COMBINED SEWER OF 8 1 100
Wessex Water Malago ANDOVER ROAD/STOCKWOOD CRESC CSO 6 1 100
Wessex Water Cranbrook 82 HOWARD ROAD CSO 7 1 99.6
Wessex Water River Avon FOOTSHILL ROAD CSO 7 1 100
Wessex Water Cranbrook Via Sws 1 HOWARD ROAD CSO 6 1 100
Wessex Water River Trym Via Sws HARBURY ROAD COMBINED SEWER OF 10 0 97.9
Wessex Water River Avon Via Sws MEADOW VALE COMBINED SEWER OVERFLOW 7 0 98.6
Wessex Water River Avon BATH ROAD TRADING ESTATE CSO 3 0 100
Wessex Water Filton Brook Via Sws FILTON AVENUE CSO 5 0 100
Wessex Water Coombe Brook SPEEDWELL ROAD CSO 5 0 100
Wessex Water River Avon WHITBY ROAD EMBANKMENT PS 1 0 100
Wessex Water River Avon STATION ROAD CSO 3 0 100
Wessex Water River Avon SPEEDWELL ROAD COMBINED SEWER OF 6 0 100
Wessex Water Tidal Avon O/S 82 CHARLTON ROAD CSO 5 0 100
Wessex Water Brislington Brook Via Sws BATH ROAD (NO 2) CSO 6 0 97.8
Wessex Water Malago ST JOHNS LANE CSO 2 0 97
Wessex Water Coombe Brook Via Sws BURCHELLS GREEN ROAD CSO 6 0 100
Wessex Water Malago TUGELA ROAD CSO 2 0 100
Wessex Water River Trym Via Sws OAKWOOD ROAD CSO 5 0 100
Wessex Water River Frome MARLBOROUGH STREET CSO 2 0 100
Wessex Water River Avon Via Sws WHITBY ROAD COMBINED SEWER OVERFLOW 1 0 100
Wessex Water Fishponds Brook FILWOOD ROAD NO.2 CSO 2 0 95.8
Wessex Water River Trym Via Sw ROCKSIDE DRIVE CSO 4 0 100
Wessex Water Malago BEDMINSTER ROAD CYCLE TRACK CSO 2 0 100
Wessex Water Cranbrook ST OSWALDS ROAD CSO 3 0 100
Wessex Water River Avon Via Sws 39 SPEEDWELL ROAD CSO 1 0 98.4
Wessex Water River Avon Via Sws SEA MILLS LANE (2) CSO 1 0 96
Wessex Water Brislington Brook Via Sws 424 WELLS ROAD CSO 1 0 100
Wessex Water River Frome Via Sws ST JAMES BARTON CSO 1 0 97.8
Wessex Water River Trym Via Sws HENLEAZE PARK DRIVE CSO 1 0 100
Wessex Water River Avon LAMPLIGHTERS SEWAGE PUMPING STATION 1 0 100
Wessex Water Unknown BIRCHALL ROAD 0 0 100
Wessex Water River Frome BROADMEAD ROUNDABOUT CSO 0 0 79.7
Wessex Water River Frome Via Sws CHRISTMAS STEPS CSO 0 0 100
Wessex Water Unknown CLARE STREET CSO 0 0 98.3
Wessex Water River Frome Via Sws LEWINS MEAD COMBINED SEWER OVERFLOW 0 0 100
Wessex Water Groundwater Via Infilt System MAGDELENE PLACE CSO 0 0 100
Wessex Water River Frome NELSON STREET (2) CSO 0 0 100
Wessex Water River Frome NELSON STREET 1 CSO 0 0 92.8
Wessex Water Unknown SILVER STREET 0 0 94.8
Wessex Water River Avon SOMERVILLE ROAD CSO 0 0 91.1
Wessex Water Brislington Brook 112 SCHOOL ROAD 0 0 93.6
Wessex Water River Avon Via Sws 12 SIDCOT ROAD CSO 0 0 100
Wessex Water River Avon 29 LYPPIATT ROAD CSO 0 0 95.3
Wessex Water Brislington Brook Via Sws 424 WELLS ROAD CSO 0 0 100
Wessex Water Brislington Brook 424 WELLS ROAD CSO 0 0 100
Wessex Water River Avon Via Sws 57 LYPPIATT ROAD CSO 0 0 98.7
Wessex Water Unknown 8 HULSE ROAD CSO 0 0 100
Wessex Water Brislington Brook Via Sws BATH ROAD (NO 2) CSO 0 0 100
Wessex Water River Frome BOND STREET SOUTH CSO 0 0 65
Wessex Water River Avon Via Sws BROOMHILL ROAD CSO 0 0 97.2
Wessex Water Brislington Brook Sws CROSSWAYS ROAD CSO 0 0 100
Wessex Water River Frome Via Sws GORDON ROAD COMBINED SEWER OVERFLOW 0 0 100
Wessex Water River Frome HIGH STREET/ST MARKS CSO 0 0 100
Wessex Water River Avon HOLMES HILL ROAD CSO 0 0 100
Wessex Water River Avon Via Sws MARION WALK CSO 0 0 98.9
Wessex Water River Avon OUTSIDE 8 SIDCOT 0 0 100
Wessex Water River Frome Via Sws PRITCHARD STREET CSO 0 0 100
Wessex Water Brislington Brook SALTWELL VIADUCT CSO 0 0 100
Wessex Water Brislington Brook Via Sws SOMERDALE AV SALCOMBE RD CSO 0 0 100
Wessex Water Brislington Brook WOOTTON PARK CSO 0 0 95.3
Wessex Water Fishponds Brook Via Sws 31 GROVE ROAD CSO 0 0 100
Wessex Water Fishponds Brook 43 GROVE ROAD CSO 0 0 100
Wessex Water River Frome BLACKBERRY HILL CSO 0 0 100
Wessex Water River Frome BRENTRY ROAD CSO 0 0 100
Wessex Water River Avon BROOK ROAD CSO 0 0 100
Wessex Water Fishponds Brook Via Sws FILWOOD ROAD 1 CSO 0 0 98.4
Wessex Water Fishponds Brook Via Sws FISHPONDS STORM RETENTION TANK CSO 0 0 100
Wessex Water Fishponds Brook GROVE ROAD CSO 0 0 97.2
Wessex Water Coombe Brook Via Sws LODGE CAUSEWAY CSO 0 0 100
Wessex Water Coombe Brook Via Sws MAGGS LANE 1 CSO 0 0 95.7
Wessex Water Coombe Brook Via Sws MAGGS LANE COMBINED SEWER OVERFLOW 0 0 95.8
Wessex Water Horfield Brook TORTWORTH ROAD CSO 0 0 100
Wessex Water Conham Vale Stream Via Sws WOODSIDE ROAD COMBINED SEWER OF 0 0 100
Wessex Water River Trym Via Sws 147 WELLINGTON HILL WEST NO2 CSO 0 0 90.5
Wessex Water River Trym Via Sws 147 WELLINGTON HILL WEST NO2 CSO 0 0 100
Wessex Water Bristol Avon 201 GLOUCESTER ROAD CSO 0 0 100
Wessex Water River Trym Via Sws HARBURY ROAD CSO 0 0 96.5
Wessex Water River Trym Via Sws HENBURY ROAD CSO 0 0 98.5
Wessex Water River Avon Via Sws LOWER HIGH STREET CSO 0 0 100
Wessex Water Sheene Road Culvert EAST STREET CSO 0 0 39
Wessex Water . Colliters Brook Via Sws OLD MEAD WALK CSO 0 0 67.4
Wessex Water Malago Via Sws PARSON STREET CSO 0 0 99.8
Wessex Water Malago VALE LANE COMBINED SEWER OVERFLOW 0 0 100
Wessex Water River Avon HANHAM HIGH STREET CSO 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, and Scottish Water

Experimental derived data from Thames Water API, Some data may be missing or inaccurate. Live sewage data from Stream Water API

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.

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