Polluted by sewage 8,915 hours in 2025 - That's 1.03 years
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We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for Frome and East Somerset, here you can see overflows in red, the darker the red, the more the CSO overflowed that day.
Each CSO has a row, the most recent data is on the right hand side.
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Donate Now| Company | Site Name | Receiving Waterway | Overflow Days | Total Duration (hours) | Total Duration (days) |
|---|---|---|---|---|---|
| Wessex Water | NUNNEY STORM TANK | Nunney Brook | 45 | 887 h 16m | 36.96 |
| Wessex Water | NUNNEY STORM TANK | Nunney Brook | 34 | 513 h 8m | 21.38 |
| Wessex Water | NORTON ST PHILIP STORM TANK | Norton Brook | 28 | 465 h 29m | 19.38 |
| Wessex Water | COLEFORD STORM TANK | Mells River | 30 | 439 h 18m | 18.29 |
| Wessex Water | TRUDOXHILL | River Frome | 28 | 350 h 24m | 14.58 |
| Wessex Water | COLEFORD STORM TANK | Mells River | 35 | 340 h 39m | 14.17 |
| Wessex Water | CRANMORE INLET | Whatley Brook | 23 | 334 h 21m | 13.92 |
| Wessex Water | RODE STORM TANK | Somerset Frome | 23 | 269 h 22m | 11.21 |
| Wessex Water | RODE STORM TANK | Somerset Frome | 16 | 252 h 57m | 10.5 |
| Wessex Water | EDFORD INLET | Mells River | 21 | 233 h 37m | 9.71 |
| Wessex Water | EDFORD STORM TANK | Mells River | 26 | 227 h 5m | 9.46 |
| Wessex Water | NORTON ST PHILIP STORM TANK | Norton Brook | 18 | 225 h 11m | 9.38 |
| Wessex Water | SHOSCOMBE STORM TANK | Wellow Brook | 29 | 223 h 27m | 9.29 |
| Wessex Water | DITCHEAT STORM TANK | River Alham | 15 | 205 h 16m | 8.54 |
| Wessex Water | TRUDOXHILL | River Frome | 23 | 160 h 35m | 6.67 |
| Wessex Water | RADSTOCK MILL LANE STORM TANK | Wellow Brook | 12 | 157 h 20m | 6.54 |
| Wessex Water | WEST PENNARD HAVYATT | River Brue | 9 | 141 h 21m | 5.88 |
| Wessex Water | LEIGH ON MENDIP STORM TANK | Leigh Stream | 12 | 137 h 6m | 5.71 |
| Wessex Water | CHILCOMPTON INLET | Somer Stream | 50 | 132 h 53m | 5.5 |
| Wessex Water | CRANMORE INLET | Whatley Brook | 13 | 127 h 32m | 5.29 |
| Wessex Water | EDFORD INLET | Mells River | 20 | 122 h 5m | 5.08 |
| Wessex Water | BECKINGTON STORM TANK | River Frome | 8 | 116 h 15m | 4.83 |
| Wessex Water | WITHAM FRIARY | River Frome | 9 | 112 h 19m | 4.67 |
| Wessex Water | EVERCREECH INLET | River Alham | 21 | 107 h 40m | 4.46 |
| Wessex Water | CHILCOMPTON INLET | Somer Stream | 25 | 106 h 37m | 4.42 |
| Wessex Water | WEST PENNARD HAVYATT | River Brue | 10 | 103 h 51m | 4.29 |
| Wessex Water | EVERCREECH STORM TANK | River Alham | 8 | 103 h 46m | 4.29 |
| Wessex Water | CHILCOMPTON STORM TANK | Somer Stream | 14 | 96 h 33m | 4 |
| Wessex Water | COLEFORD KINGS HEAD | Mells Stream | 22 | 93 h 40m | 3.88 |
| Wessex Water | WANSTROW | Nunney Brook | 10 | 85 h 22m | 3.54 |
| Wessex Water | CARLINGCOTT STONEAGE LANE | Cam Brook | 16 | 84 h 39m | 3.5 |
| Wessex Water | CHILCOMPTON STORM TANK | Somer Stream | 9 | 80 h 17m | 3.33 |
| Wessex Water | COLEFORD INLET | Mells River | 19 | 80 h 12m | 3.33 |
| Wessex Water | DITCHEAT STORM TANK | River Alham | 12 | 72 h 48m | 3 |
| Wessex Water | CARLINGCOTT STONEAGE LANE | Cam Brook | 11 | 71 h 31m | 2.96 |
| Wessex Water | COLEFORD INLET | Mells River | 13 | 65 h | 2.71 |
| Wessex Water | RADSTOCK MILL LANE STORM TANK | Wellow Brook | 6 | 60 h 42m | 2.5 |
| Wessex Water | KILMERSDON | Kilmersdon Stream | 9 | 59 h 56m | 2.46 |
| Wessex Water | MIDFORD TUCKING MILL | Midford Brook | 12 | 58 h 50m | 2.42 |
| Wessex Water | MIDSOMER NORTON NORTHMEAD ROAD/ HAYES PARK ROAD | Wellow Brook | 11 | 57 h 40m | 2.38 |
| Wessex Water | EVERCREECH INLET | River Alham | 19 | 57 h 16m | 2.38 |
| Wessex Water | EVERCREECH STORM TANK | River Alham | 7 | 56 h 40m | 2.33 |
| Wessex Water | CAM VALLEY DUNKERTON INLET | Cam Brook | 17 | 56 h 19m | 2.33 |
| Wessex Water | CAM VALLEY DUNKERTON INLET | Cam Brook | 14 | 52 h 9m | 2.17 |
| Wessex Water | WITHAM FRIARY | River Frome | 9 | 50 h 52m | 2.08 |
| Wessex Water | GURNEY SLADE | Mells Stream | 10 | 49 h 6m | 2.04 |
| Wessex Water | LEIGH ON MENDIP STORM TANK | Leigh Stream | 8 | 47 h 47m | 1.96 |
| Wessex Water | FRESHFORD FIELDS OFF ROSEMARY LANE | River Frome | 17 | 47 h 36m | 1.96 |
| Wessex Water | FROME LOWER KEYFORD | River Frome | 35 | 47 h 30m | 1.96 |
| Wessex Water | MIDSOMER NORTON STORM RETENTION TANK (OLD STW) | Wellow Brook | 13 | 46 h 4m | 1.92 |
| Wessex Water | MIDSOMER NORTON STORM RETENTION TANK (OLD STW) | Wellow Brook | 12 | 45 h 30m | 1.88 |
| Wessex Water | EDFORD STORM TANK | Mells River | 12 | 38 h 1m | 1.58 |
| Wessex Water | WANSTROW | Nunney Brook | 6 | 37 h 29m | 1.54 |
| Wessex Water | MIDSOMER NORTON CAUTLETTS CLOSE | River Somer | 5 | 35 h 30m | 1.46 |
| Wessex Water | SHOSCOMBE STORM TANK | Wellow Brook | 5 | 34 h 46m | 1.42 |
| Wessex Water | COLEFORD KINGS HEAD | Mells Stream | 9 | 32 h 58m | 1.33 |
| Wessex Water | FROME WELSHMILL LANE STORM TANKS STORM TANK | River Frome | 6 | 32 h 12m | 1.33 |
| Wessex Water | FROME ADDERWELL CLOSE | River Frome | 18 | 31 h 40m | 1.29 |
| Wessex Water | FROME ADDERWELL CLOSE | River Frome | 29 | 31 h 36m | 1.29 |
| Wessex Water | MIDSOMER NORTON CAUTLETTS CLOSE | River Somer | 4 | 29 h 26m | 1.21 |
| Wessex Water | DUNKERTON BROOKLANDS | Midford Brook | 4 | 26 h 51m | 1.08 |
| Wessex Water | MIDSOMER NORTON BERKELEY AVENUE SO | Wellow Brook | 8 | 25 h 46m | 1.04 |
| Wessex Water | RADSTOCK MILL LANE INLET X | Wellow Brook | 10 | 24 h 46m | 1 |
| Wessex Water | OAKHILL STORM TANK | Mells Stream | 4 | 24 h 25m | 1 |
| Wessex Water | FROME LOWER KEYFORD | River Frome | 16 | 24 h 12m | 1 |
| Wessex Water | Unknown | Unknown | 3 | 23 h 45m | 0.96 |
| Wessex Water | EVERCREECH STONEY STRATTON | River Alham | 3 | 21 h 5m | 0.88 |
| Wessex Water | KILMERSDON | Kilmersdon Stream | 6 | 20 h 54m | 0.83 |
| Wessex Water | RADSTOCK MILL LANE INLET X | Wellow Brook | 6 | 20 h 38m | 0.83 |
| Wessex Water | RADSTOCK MILL LANE INLET 1 | Wellow Brook | 8 | 19 h 23m | 0.79 |
| Wessex Water | MIDFORD TUCKING MILL | Midford Brook | 6 | 19 h 9m | 0.79 |
| Wessex Water | RADSTOCK MILL LANE INLET 1 | Wellow Brook | 5 | 18 h 36m | 0.75 |
| Wessex Water | DUNKERTON BROOKLANDS | Midford Brook | 3 | 17 h 29m | 0.71 |
| Wessex Water | BECKINGTON STORM TANK | River Frome | 3 | 16 h 14m | 0.67 |
| Wessex Water | FROME WELSHMILL LANE STORM TANKS STORM TANK | River Frome | 5 | 14 h 50m | 0.58 |
| Wessex Water | MIDSOMER NORTON BERKELEY AVENUE SO | Wellow Brook | 6 | 13 h 24m | 0.54 |
| Wessex Water | FRESHFORD NEW INN | River Frome | 2 | 13 h 10m | 0.54 |
| Wessex Water | GURNEY SLADE | Mells Stream | 7 | 13 h 4m | 0.54 |
| Wessex Water | WEST PENNARD PAGE LANE | Ten Foot Rhyne | 3 | 11 h 30m | 0.46 |
| Wessex Water | FRESHFORD FIELDS OFF ROSEMARY LANE | River Frome | 3 | 7 h 40m | 0.29 |
| Wessex Water | STOKE ST MICHAEL STOKE HILL | Mells Stream | 2 | 7 h 38m | 0.29 |
| Wessex Water | PARBROOK INLET | Coxbridge Brook | 3 | 6 h 56m | 0.25 |
| Wessex Water | RODE BARROW FARM TANK | River Frome | 2 | 6 h 50m | 0.25 |
| Wessex Water | RADSTOCK KILMERSDON ROAD SYPHON EO | Waterside | 13 | 6 h 2m | 0.25 |
| Wessex Water | OAKHILL STORM TANK | Mells Stream | 2 | 5 h 55m | 0.21 |
| Wessex Water | MIDSOMER NORTON NORTHMEAD ROAD/ HAYES PARK ROAD | Wellow Brook | 6 | 5 h 44m | 0.21 |
| Wessex Water | PEASEDOWN ST JOHN NEW BUILDINGS / WHITEBROOK LANE | Unnamed Ditch | 15 | 5 h 30m | 0.21 |
| Wessex Water | MONKTON COMBE SUMMER LANE | Horsecombe Brook | 11 | 5 h 25m | 0.21 |
| Wessex Water | FROME WHATCOMBE ROAD NO XX | River Frome Via Sws | 15 | 5 h 20m | 0.21 |
| Wessex Water | WELLOW INLET | Wellow Brook | 3 | 5 h | 0.21 |
| Wessex Water | RADSTOCK KILMERSDON ROAD SYPHON EO | Waterside | 4 | 4 h 28m | 0.17 |
| Wessex Water | MONKTON COMBE SUMMER LANE | Horsecombe Brook | 4 | 4 h 24m | 0.17 |
| Wessex Water | FROME FARRANT ROAD NEAR YOUTH CENTRE | River Frome | 9 | 4 h 16m | 0.17 |
| Wessex Water | RADSTOCK SOMERVALE ROAD REAR KHANDALLA WELTON ROAD | Wellow Brook | 8 | 4 h 8m | 0.17 |
| Wessex Water | CAMERTON BRIDGE PLACE ROAD MH D19 | Cam Brook | 3 | 3 h 52m | 0.12 |
| Wessex Water | RADSTOCK WATERLOO ROAD/PINE COURT | Wellow Brook | 5 | 3 h 38m | 0.12 |
| Wessex Water | FROME MERCHANTS BARTON | River Frome | 8 | 3 h 14m | 0.12 |
| Wessex Water | CAMERTON BRIDGE PLACE ROAD MH D19 | Cam Brook | 3 | 3 h 12m | 0.12 |
| Wessex Water | RADSTOCK SOMERVALE ROAD REAR KHANDALLA WELTON ROAD | Wellow Brook | 6 | 2 h 52m | 0.08 |
| Wessex Water | FROME WALLBRIDGE | River Frome | 1 | 2 h 50m | 0.08 |
| Wessex Water | PEASEDOWN ST JOHN NEW BUILDINGS / WHITEBROOK LANE | Unnamed Ditch | 4 | 2 h 34m | 0.08 |
| Wessex Water | RADSTOCK WATERLOO ROAD/PINE COURT | Wellow Brook | 3 | 2 h 28m | 0.08 |
| Wessex Water | FROME WHATCOMBE ROAD NO XX | River Frome Via Sws | 5 | 2 h 10m | 0.08 |
| Wessex Water | RODE BARROW FARM TANK | River Frome | 1 | 1 h 48m | 0.04 |
| Wessex Water | FROME COURT HOUSE KING STREET | River Frome | 7 | 1 h 40m | 0.04 |
| Wessex Water | FROME FARRANT ROAD NEAR YOUTH CENTRE | River Frome | 2 | 1 h 4m | 0.04 |
| Wessex Water | FROME SINGERS CATTLE MARKET | River Frome Via Sws | 4 | 0 h 54m | 0 |
| Wessex Water | FROME PORTWAY / LOCKS HILL | River Frome | 7 | 0 h 48m | 0 |
| Wessex Water | CAM VALLEY SPLOT FARM NR PEASEDOWN ST JOHN | Cam Brook | 1 | 0 h 44m | 0 |
| Wessex Water | FROME RODDEN ROAD | River Frome | 1 | 0 h 42m | 0 |
| Wessex Water | FROME COURT HOUSE KING STREET | River Frome | 2 | 0 h 40m | 0 |
| Wessex Water | FRESHFORD NEW INN | River Frome | 1 | 0 h 28m | 0 |
| Wessex Water | RADSTOCK WATERSIDE SO | Waterside | 2 | 0 h 24m | 0 |
| Wessex Water | FROME NORTH OF CARPET FACTORY NEAR RAILWAY JUNCTION | River Frome | 1 | 0 h 20m | 0 |
| Wessex Water | RADSTOCK WATERLOO ROAD SO (DOWNSTREAM) | Wellow Brook | 1 | 0 h 8m | 0 |
| Wessex Water | FROME FELTHAM DRIVE NEAR FOOTBRIDGE | Adderwell Brook | 2 | 0 h 6m | 0 |
| Wessex Water | MIDSOMER NORTON WELTON SO | Midford Brook | 1 | 0 h 2m | 0 |
| Wessex Water | FROME FELTHAM DRIVE NEAR FOOTBRIDGE | Adderwell Brook | 1 | 0 h 2m | 0 |
| Wessex Water | CAM VALLEY SPLOT FARM NR PEASEDOWN ST JOHN | Cam Brook | 1 | 0 h 2m | 0 |
| Wessex Water | MELLS STORM TANK | Mells Stream | 0 | 0 h | 0 |
| Wessex Water | FROME WELSHMILL LANE INLET | River Frome | 0 | 0 h | 0 |
| Wessex Water | RADSTOCK FROME ROAD | Wellow Brook | 0 | 0 h | 0 |
| Wessex Water | RADSTOCK WATERLOO ROAD BUILDERS YARD | Wellow Brook | 0 | 0 h | 0 |
| Wessex Water | RADSTOCK WALEGRAVE TERRACE OPP X | Wellow Brook | 0 | 0 h | 0 |
| Wessex Water | MIDFORD ADJ ABANDONED RAILWAY | Midford Brook | 0 | 0 h | 0 |
| Wessex Water | SHOSCOMBE SINGLE HILL | Wellow Brook | 0 | 0 h | 0 |
| Wessex Water | WELLOW INLET | Wellow Brook | 0 | 0 h | 0 |
| Wessex Water | FROME WESTWAY PRECINCT CAR PARK R/O | River Frome | 0 | 0 h | 0 |
| Wessex Water | PARBROOK INLET | Coxbridge Brook | 0 | 0 h | 0 |
| Wessex Water | EVERCREECH STONEY STRATTON | River Alham | 0 | 0 h | 0 |
| Wessex Water | PEASEDOWN ST JOHN WELLOW LANE | Wellow Brook | 0 | 0 h | 0 |
| Wessex Water | STRATTON ON THE FOSSE STORM TANK | Luccombe Watercourse | 0 | 0 h | 0 |
| Wessex Water | FROME SINGERS CATTLE MARKET | River Frome Via Sws | 0 | 0 h | 0 |
| Wessex Water | FROME RODDEN ROAD | River Frome | 0 | 0 h | 0 |
| Wessex Water | FROME WELSHMILL LANE INLET | River Frome | 0 | 0 h | 0 |
| Wessex Water | FROME NORTH OF CARPET FACTORY NEAR RAILWAY JUNCTION | River Frome | 0 | 0 h | 0 |
| Wessex Water | RADSTOCK WALEGRAVE TERRACE OPP X | Wellow Brook | 0 | 0 h | 0 |
| Wessex Water | FROME MERCHANTS BARTON | River Frome | 0 | 0 h | 0 |
| Wessex Water | MELLS STORM TANK | Mells Stream | 0 | 0 h | 0 |
| Wessex Water | WELLOW MILL HILL | Wellow Brook | 0 | 0 h | 0 |
| Wessex Water | RADSTOCK WATERLOO ROAD SO (DOWNSTREAM) | Wellow Brook | 0 | 0 h | 0 |
| Wessex Water | MELLS | Mells Stream | 0 | 0 h | 0 |
| Wessex Water | WEST PENNARD PAGE LANE | Ten Foot Rhyne | 0 | 0 h | 0 |
| Wessex Water | FROME PORTWAY / LOCKS HILL | River Frome | 0 | 0 h | 0 |
| Wessex Water | FROME WALLBRIDGE | River Frome | 0 | 0 h | 0 |
| Wessex Water | PEASEDOWN ST JOHN WELLOW LANE | Wellow Brook | 0 | 0 h | 0 |
| Wessex Water | RADSTOCK WATERSIDE SO | Waterside | 0 | 0 h | 0 |
| Wessex Water | STRATTON ON THE FOSSE STORM TANK | Luccombe Watercourse | 0 | 0 h | 0 |
| Wessex Water | FROME COURTS BARTON MARSTON LANE | Nunney Brook | 0 | 0 h | 0 |
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.
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