Polluted by sewage 26,001 hours in 2025 - That's 3.01 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 Whitehaven and Workington, 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) |
|---|---|---|---|---|---|
| United Utilities | PICA WwTW | Dyan Beck | 145 | 2,386 h 46m | 99.42 |
| United Utilities | Lowca Lane(Hazel Grove) CSO | Ling Beck | 99 | 1,963 h 57m | 81.79 |
| United Utilities | Dean Ww PS | Near Stock Beck | 128 | 1,431 h 11m | 59.62 |
| United Utilities | LITTLE CLIFTON WwTW | River Marron | 92 | 1,118 h 23m | 46.58 |
| United Utilities | Rowrah PS | Colliergate Beck | 47 | 1,068 h 18m | 44.5 |
| United Utilities | PICA WwTW | Dyan Beck | 47 | 1,056 h 9m | 44 |
| United Utilities | Keekle PS | River Keekle | 109 | 960 h 42m | 40 |
| United Utilities | Rowrah PS | Colliergate Beck | 52 | 868 h 20m | 36.17 |
| United Utilities | Dean Ww PS | Near Stock Beck | 42 | 843 h 32m | 35.12 |
| United Utilities | EAGLESFIELD WwTW | Dubbs Gutter | 112 | 839 h 1m | 34.96 |
| United Utilities | CALDER BRIDGE WwTW | River Calder | 41 | 713 h 9m | 29.71 |
| United Utilities | St Bees PS | Pow Beck | 35 | 692 h 42m | 28.83 |
| United Utilities | CLEATOR WwTW | River Keekle | 45 | 687 h 34m | 28.62 |
| United Utilities | LITTLE CLIFTON WwTW | River Marron | 32 | 673 h 40m | 28.04 |
| United Utilities | CALDER BRIDGE WwTW | River Calder | 30 | 615 h 26m | 25.62 |
| United Utilities | WORKINGTON WwTW | Irish Sea | 96 | 591 h 25m | 24.62 |
| United Utilities | Keekle PS | River Keekle | 32 | 583 h 46m | 24.29 |
| United Utilities | BRAYSTONES WwTW | Irish Sea | 45 | 569 h 15m | 23.71 |
| United Utilities | Pickett How Farm CSO | River Ehen | 25 | 521 h 46m | 21.71 |
| United Utilities | Northside Sewerage System | River Derwent | 70 | 520 h 34m | 21.67 |
| United Utilities | CLEATOR WwTW | River Keekle | 27 | 512 h 34m | 21.33 |
| United Utilities | BRAYSTONES WwTW | Irish Sea | 108 | 461 h | 19.21 |
| United Utilities | EAGLESFIELD WwTW | Dubbs Gutter | 32 | 458 h 43m | 19.08 |
| United Utilities | Deanscales PS and CSO | Far Stock Beck | 64 | 421 h 56m | 17.54 |
| United Utilities | Northside Sewerage System | River Derwent | 26 | 331 h 18m | 13.79 |
| United Utilities | Seascale Wastewater Treatment Works (Site ID SEASC) (017480324) | Irish Sea | 27 | 319 h 36m | 13.29 |
| United Utilities | PARDSHAW WwTW | Black Beck | 32 | 287 h 53m | 11.96 |
| United Utilities | Brookside CSO | River Ehen | 63 | 271 h 37m | 11.29 |
| United Utilities | Pickett How Farm CSO | River Ehen | 19 | 255 h | 10.62 |
| United Utilities | Blind Lane CSO | River Keekle | 28 | 237 h 30m | 9.88 |
| United Utilities | Bridge End Ind Estate PS | River Ehen | 20 | 221 h 51m | 9.21 |
| United Utilities | Rear of Hayes Castle Farm CSO | Distington Beck | 44 | 218 h 56m | 9.08 |
| United Utilities | St Bees PS | Pow Beck | 25 | 217 h 21m | 9.04 |
| United Utilities | Moor Row CSO | River Yarrow | 67 | 195 h 50m | 8.12 |
| United Utilities | Blind Lane CSO | River Keekle | 15 | 194 h 25m | 8.08 |
| United Utilities | Moor Row CSO | River Yarrow | 17 | 179 h 36m | 7.46 |
| United Utilities | Rear of Hayes Castle Farm CSO | Distington Beck | 19 | 173 h 53m | 7.21 |
| United Utilities | Seascale Wastewater Treatment Works (Site ID SEASC) (017480324) | Irish Sea | 15 | 164 h 35m | 6.83 |
| United Utilities | Great Clifton | River Derwent | 17 | 162 h 28m | 6.75 |
| United Utilities | Bridge End Ind Estate PS | River Ehen | 22 | 158 h 24m | 6.58 |
| United Utilities | Brookside CSO | River Ehen | 20 | 153 h 46m | 6.38 |
| United Utilities | Deanscales PS and CSO | Far Stock Beck | 6 | 135 h 24m | 5.62 |
| United Utilities | WHITEHAVEN WwTW | Irish Sea | 23 | 125 h 38m | 5.21 |
| United Utilities | WHITEHAVEN WwTW | Irish Sea | 13 | 113 h 41m | 4.71 |
| United Utilities | ARLECDON WwTW | Dub Beck | 36 | 107 h 58m | 4.46 |
| United Utilities | High Street (Workington) Combined Sewer Overflow (Site ID 02633) (ALL0006) | Stan Beck | 14 | 86 h 40m | 3.58 |
| United Utilities | John Pier Sewage Pumping Station CSO | River Derwent Estuary | 18 | 79 h 10m | 3.29 |
| United Utilities | ARLECDON WwTW | Dub Beck | 17 | 76 h 12m | 3.17 |
| United Utilities | Lowca Lane(Hazel Grove) CSO | Ling Beck | 11 | 71 h 46m | 2.96 |
| United Utilities | John Pier Sewage Pumping Station CSO | River Derwent Estuary | 13 | 67 h 28m | 2.79 |
| United Utilities | High Street (Workington) Combined Sewer Overflow (Site ID 02633) (ALL0006) | Stan Beck | 46 | 66 h 2m | 2.75 |
| United Utilities | Arlecdon CSO | Winder Beck | 11 | 59 h 40m | 2.46 |
| United Utilities | Arlecdon Parks Road CSO | Eller Gill | 37 | 52 h 10m | 2.17 |
| United Utilities | West Strand pumping station (WSTST) (COP0094) | Irish Sea | 30 | 46 h 55m | 1.92 |
| United Utilities | WORKINGTON WwTW | Irish Sea | 6 | 45 h 31m | 1.88 |
| United Utilities | Meadow Road CSO | Pow Beck | 10 | 40 h 38m | 1.67 |
| United Utilities | Arlecdon Parks Road CSO | Eller Gill | 12 | 40 h 26m | 1.67 |
| United Utilities | Meadow Road CSO | Pow Beck | 11 | 34 h 24m | 1.42 |
| United Utilities | Winston Drive CSO | Snebra Beck | 15 | 30 h 27m | 1.25 |
| United Utilities | KIRKLAND WwTW | Hawes Gill | 30 | 30 h 14m | 1.25 |
| United Utilities | Moresby Park PS | Blackwood Beck | 5 | 28 h 38m | 1.17 |
| United Utilities | Arlecdon CSO | Winder Beck | 18 | 27 h 38m | 1.12 |
| United Utilities | Lowca Brow (Parton) CSO | Lowca Beck | 5 | 24 h 11m | 1 |
| United Utilities | Winston Drive CSO | Snebra Beck | 9 | 20 h 34m | 0.83 |
| United Utilities | PARDSHAW WwTW | Black Beck | 8 | 20 h 12m | 0.83 |
| United Utilities | Kiln Brow WwPS | River Ehen | 2 | 17 h 13m | 0.71 |
| United Utilities | Branthwaite PS | River Marron | 6 | 16 h 18m | 0.67 |
| United Utilities | Grisedale Close CSO | Pow Beck | 3 | 15 h 22m | 0.62 |
| United Utilities | Kiln Brow WwPS | River Ehen | 4 | 13 h 39m | 0.54 |
| United Utilities | Lattrigg Road CSO | Clvrt Pow Beck Via Sws | 8 | 13 h 26m | 0.54 |
| United Utilities | Lattrigg Road CSO | Clvrt Pow Beck Via Sws | 6 | 12 h 44m | 0.5 |
| United Utilities | Branthwaite PS | River Marron | 11 | 12 h 41m | 0.5 |
| United Utilities | Grisedale Close CSO | Pow Beck | 9 | 12 h 34m | 0.5 |
| United Utilities | KIRKLAND WwTW | Hawes Gill | 10 | 12 h 28m | 0.5 |
| United Utilities | West Strand pumping station (WSTST) (COP0094) | Irish Sea | 10 | 12 h | 0.5 |
| United Utilities | GLEN HOUSE CSO | River Marron | 11 | 11 h 51m | 0.46 |
| United Utilities | Norbeck Park A CSO | Norbeck | 18 | 11 h 14m | 0.46 |
| United Utilities | Esk Avenue Mirehouse CSO | Pow Beck | 6 | 9 h 22m | 0.38 |
| United Utilities | GOSFORTH WwTW | Hare Beck | 3 | 9 h 11m | 0.38 |
| United Utilities | Moresby Park PS | Blackwood Beck | 7 | 8 h 44m | 0.33 |
| United Utilities | GLEN HOUSE CSO | River Marron | 5 | 8 h 16m | 0.33 |
| United Utilities | Esk Avenue Mirehouse CSO | Pow Beck | 7 | 6 h 29m | 0.25 |
| United Utilities | Melbourne Terrace CSO | River Wyre | 8 | 6 h 6m | 0.25 |
| United Utilities | Melbourne Terrace CSO | River Wyre | 18 | 6 h | 0.25 |
| United Utilities | Camerton Ww PS | River Derwent | 3 | 5 h 54m | 0.21 |
| United Utilities | Meadowfield Gosforth Combined Sewer Overflow (Site ID 02631) (COP0030) | Esk | 7 | 5 h 33m | 0.21 |
| United Utilities | Meadowfield Gosforth Combined Sewer Overflow (Site ID 02631) (COP0030) | Esk | 9 | 5 h 4m | 0.21 |
| United Utilities | CROASDALE AVENUE CSO | Pow Beck | 3 | 5 h 4m | 0.21 |
| United Utilities | Dent Road CSO | River Ehen | 15 | 4 h 52m | 0.17 |
| United Utilities | Dent Road CSO | River Ehen | 7 | 4 h 8m | 0.17 |
| United Utilities | Parton PS | Irish Sea | 4 | 3 h 39m | 0.12 |
| United Utilities | Parton PS | Irish Sea | 19 | 3 h 1m | 0.12 |
| United Utilities | CROASDALE AVENUE CSO | Pow Beck | 3 | 2 h 34m | 0.08 |
| United Utilities | CLEATOR WwTW | River Keekle | 5 | 2 h 12m | 0.08 |
| United Utilities | Wyndham Terrace CSO | River Ehen | 5 | 1 h 36m | 0.04 |
| United Utilities | Ullgill Moresby (MH65) CSO | Lowca Beck | 3 | 1 h 30m | 0.04 |
| United Utilities | CLEATOR WwTW | River Keekle | 6 | 1 h 12m | 0.04 |
| United Utilities | Snebra Whitehaven CSO | Pow Beck | 2 | 0 h 54m | 0 |
| United Utilities | The CSO at Main Street | Townsend Beck | 6 | 0 h 40m | 0 |
| United Utilities | MILL COTTAGES CSO | Distington Beck | 2 | 0 h 38m | 0 |
| United Utilities | Linethwaite PS | Needless Beck | 1 | 0 h 27m | 0 |
| United Utilities | Wodow Road CSO | River Ehen | 3 | 0 h 26m | 0 |
| United Utilities | Wyndham Terrace CSO | River Ehen | 1 | 0 h 20m | 0 |
| United Utilities | Wodow Road CSO | River Ehen | 1 | 0 h 8m | 0 |
| United Utilities | Arlecdon Parks Road CSO to Winder Beck | Winder Beck | 1 | 0 h 4m | 0 |
| United Utilities | MILL COTTAGES CSO | Distington Beck | 0 | 0 h | 0 |
| United Utilities | Camerton Ww PS | River Derwent | 0 | 0 h | 0 |
| United Utilities | Ullgill Moresby (MH65) CSO | Lowca Beck | 0 | 0 h | 0 |
| United Utilities | POW Bridge/Station Road CSO | River Calder | 0 | 0 h | 0 |
| United Utilities | GOSFORTH WwTW | Hare Beck | 0 | 0 h | 0 |
| United Utilities | The CSO at Main Street | Townsend Beck | 0 | 0 h | 0 |
| United Utilities | Snebra Whitehaven CSO | Pow Beck | 0 | 0 h | 0 |
| United Utilities | POW Bridge/Station Road CSO | River Calder | 0 | 0 h | 0 |
| United Utilities | Ribton Moorside CSO | Culverted Sec Of Snebra Beck | 0 | 0 h | 0 |
| United Utilities | Rear Garden of No.16 Crossings Close | Nor Beck | 0 | 0 h | 0 |
| United Utilities | Linethwaite PS | Needless Beck | 0 | 0 h | 0 |
| United Utilities | Common End CSO | Distington Beck | 0 | 0 h | 0 |
| United Utilities | Common End CSO | Distington Beck | 0 | 0 h | 0 |
| United Utilities | Ribton Moorside CSO | Culverted Sec Of Snebra Beck | 0 | 0 h | 0 |
| United Utilities | Lowca Brow (Parton) CSO | Lowca Beck | 0 | 0 h | 0 |
| United Utilities | Norbeck Park A CSO | Norbeck | 0 | 0 h | 0 |
| United Utilities | Kiln Brow CSO | River Ehen | 0 | 0 h | 0 |
| United Utilities | St Bridgets Lane CSO | Culv'T'D Sect Of Skirting Beck | 0 | 0 h | 0 |
| United Utilities | Arlecdon Parks Road CSO to Winder Beck | Winder Beck | 0 | 0 h | 0 |
| United Utilities | St Bridgets Lane CSO | Culv'T'D Sect Of Skirting Beck | 0 | 0 h | 0 |
| United Utilities | CAMERTON WwTW | River Derwent | 0 | 0 h | 0 |
| United Utilities | Rear Garden of No.16 Crossings Close | Nor Beck | 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.
This project is not associated, approved or endorsed by any of the companies whose logos you see here.