Polluted by sewage 9,476 hours in 2025 - That's 1.1 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 Carlisle, 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 | Hethers Gill WwTW | Hether Burn | 120 | 1,819 h 21m | 75.79 |
| United Utilities | CARLISLE WwTW | River Eden | 58 | 1,148 h | 47.83 |
| United Utilities | ROCKCLIFFE WwTW | River Eden Estuary | 88 | 1,094 h 24m | 45.58 |
| United Utilities | Hethers Gill WwTW | Hether Burn | 38 | 735 h 4m | 30.62 |
| United Utilities | LONGTOWN WwTW | River Esk | 65 | 578 h 59m | 24.08 |
| United Utilities | GILSLAND WwTW | River Irthing | 69 | 396 h 39m | 16.5 |
| United Utilities | ROCKCLIFFE WwTW | River Eden Estuary | 17 | 192 h 50m | 8 |
| United Utilities | Cote Hill Wastewater Treatment Works (COTHL) (017670051) | Pow Maughan Beck | 44 | 189 h 13m | 7.88 |
| United Utilities | Trinity School / Strand Road Combined Sewer Overflow (Site ID 10015) xxxx ) (CAR0093) | River Mersey | 50 | 184 h 35m | 7.67 |
| United Utilities | Rockcliffe Pumping Station (Site ID RCKCL) (CAR0027) | Rockcliffe Beck | 60 | 182 h 52m | 7.58 |
| United Utilities | CASTLE CARROCK WwTW | Castle Carrock Beck | 19 | 179 h 33m | 7.46 |
| United Utilities | GILSLAND WwTW | River Irthing | 17 | 172 h 2m | 7.17 |
| United Utilities | LONGTOWN WwTW | River Esk | 16 | 166 h 27m | 6.92 |
| United Utilities | Bousteads Grassing CSO | River Caldew | 37 | 133 h 53m | 5.54 |
| United Utilities | Milton East WW Net PS | Milton Beck | 29 | 112 h 2m | 4.67 |
| United Utilities | CASTLE CARROCK WwTW | Castle Carrock Beck | 51 | 109 h 32m | 4.54 |
| United Utilities | Cote Hill Wastewater Treatment Works (COTHL) (017670051) | Pow Maughan Beck | 17 | 106 h 28m | 4.42 |
| United Utilities | Kirkhouse (Hallbankgate) PS | Milton Beck | 30 | 101 h 5m | 4.21 |
| United Utilities | Scotby CSO | Collar Beck | 20 | 92 h 8m | 3.83 |
| United Utilities | Stanwix and Stainton combined sewer overflow (Site ID 10009) (CAR0055) | River Eden | 16 | 90 h | 3.75 |
| Northumbrian Water | Unknown | Unknown | 13 | 80 h 59m | 3.33 |
| United Utilities | Irthington PS | River Irthing | 14 | 74 h 17m | 3.08 |
| United Utilities | CSO adjacent to Cargo WwTW | River Eden | 45 | 70 h 36m | 2.92 |
| United Utilities | HEADS NOOK WwTW | Cairn Beck | 14 | 68 h 22m | 2.83 |
| United Utilities | Rockcliffe Pumping Station (Site ID RCKCL) (CAR0027) | Rockcliffe Beck | 13 | 67 h 5m | 2.79 |
| United Utilities | LONGTOWN WwTW | River Esk | 32 | 64 h 40m | 2.67 |
| United Utilities | TALKIN WwTW | Willy Beck | 34 | 64 h 29m | 2.67 |
| United Utilities | WETHERAL & GREAT CORBY WwTW | River Eden | 15 | 64 h 26m | 2.67 |
| United Utilities | Newby East PS | River Goyt | 10 | 59 h 28m | 2.46 |
| United Utilities | Bousteads Grassing CSO | River Caldew | 13 | 56 h | 2.33 |
| United Utilities | Warwick Bridge WWTW | River Eden | 24 | 55 h 9m | 2.29 |
| United Utilities | Warwick Bridge PS | Cairn Beck | 24 | 54 h 18m | 2.25 |
| United Utilities | Etterby Terrace CSO | River Eden | 15 | 52 h 40m | 2.17 |
| United Utilities | Milton East WW Net PS | Milton Beck | 9 | 51 h 10m | 2.12 |
| United Utilities | Infirmary Street (Carlisle) CSO | Leeds/Liverpool Canal | 10 | 49 h 9m | 2.04 |
| United Utilities | TALKIN WwTW | Willy Beck | 12 | 47 h 12m | 1.96 |
| United Utilities | Trinity School / Strand Road Combined Sewer Overflow (Site ID 10015) xxxx ) (CAR0093) | River Mersey | 14 | 47 h 3m | 1.96 |
| United Utilities | Cocklakes WwTW | Pow Maughan Beck | 5 | 43 h | 1.79 |
| United Utilities | Gilford Park CSO | River Petteril | 14 | 40 h 58m | 1.67 |
| United Utilities | Irthington PS | River Irthing | 11 | 38 h 54m | 1.58 |
| United Utilities | Brampton CSO (Upstream of Carlisle WwTW) | Brampton Beck | 23 | 36 h 2m | 1.5 |
| United Utilities | LONGTOWN WwTW | River Esk | 10 | 35 h 14m | 1.46 |
| United Utilities | Faugh WwTW | Trout Beck | 10 | 34 h 31m | 1.42 |
| United Utilities | CSO adjacent to Cargo WwTW | River Eden | 10 | 30 h 46m | 1.25 |
| United Utilities | Scotby CSO | Collar Beck | 6 | 29 h 48m | 1.21 |
| United Utilities | D/S Petterill Railway Bridge | River Petteril | 5 | 29 h 26m | 1.21 |
| United Utilities | Newby East PS | River Goyt | 6 | 27 h 6m | 1.12 |
| United Utilities | Dalston Sewage PS, CSO | Fairy Beck Culvert | 14 | 26 h 34m | 1.08 |
| United Utilities | WETHERAL & GREAT CORBY WwTW | River Eden | 5 | 26 h 22m | 1.08 |
| United Utilities | Stanwix and Stainton combined sewer overflow (Site ID 10009) (CAR0055) | River Eden | 6 | 25 h 48m | 1.04 |
| United Utilities | Crown Street (Town Dyke Orchard) Sewer | River Caldew | 21 | 25 h 6m | 1.04 |
| United Utilities | MELBOURNE PARK CSO | River Petteril | 9 | 25 h 4m | 1.04 |
| Northumbrian Water | TINDALE STW | Tarn Beck | 6 | 22 h 40m | 0.92 |
| United Utilities | Warwick Road WwNPS | River Petteril | 13 | 20 h 4m | 0.83 |
| United Utilities | CARLISLE WwTW | River Eden | 4 | 18 h 7m | 0.75 |
| United Utilities | Brampton CSO (Upstream of Carlisle WwTW) | Brampton Beck | 9 | 16 h 32m | 0.67 |
| United Utilities | Etterby Terrace CSO | River Eden | 5 | 15 h 30m | 0.62 |
| United Utilities | HEADS NOOK WwTW | Cairn Beck | 8 | 11 h 52m | 0.46 |
| United Utilities | Little Corby PS | River Eden | 11 | 11 h 46m | 0.46 |
| United Utilities | Finn Avenue CSO | Dow Beck Culvert | 5 | 8 h 54m | 0.33 |
| United Utilities | Kirkhouse (Hallbankgate) PS | Milton Beck | 4 | 7 h 58m | 0.29 |
| United Utilities | MELBOURNE PARK CSO | River Petteril | 4 | 7 h 20m | 0.29 |
| United Utilities | Warwick Bridge PS | Cairn Beck | 6 | 7 h 14m | 0.29 |
| United Utilities | Cocklakes WwTW | Pow Maughan Beck | 2 | 6 h 12m | 0.25 |
| United Utilities | Dalston Sewage PS, CSO | Fairy Beck Culvert | 3 | 4 h 54m | 0.17 |
| United Utilities | B&Q CSO | River Caldew | 7 | 4 h 38m | 0.17 |
| United Utilities | D/S Petterill Railway Bridge | River Petteril | 2 | 3 h 12m | 0.12 |
| United Utilities | Crown Street (Town Dyke Orchard) Sewer | River Caldew | 3 | 2 h 38m | 0.08 |
| United Utilities | Rear of Pirelli Factory CSO | River Caldew | 2 | 2 h 28m | 0.08 |
| United Utilities | LAVERSDALE WWTW | Laversdale Beck | 5 | 2 h 24m | 0.08 |
| United Utilities | Castle Carrok CSO (Adjacent Donlea House) | Castle Carrock Beck | 6 | 2 h 12m | 0.08 |
| United Utilities | LAVERSDALE WWTW | Laversdale Beck | 5 | 2 h | 0.08 |
| United Utilities | Warwick Road WwNPS | River Petteril | 2 | 1 h 53m | 0.04 |
| United Utilities | Great Corby Syphon CSO | River Eden | 4 | 1 h 38m | 0.04 |
| United Utilities | Infirmary Street (Carlisle) CSO | Leeds/Liverpool Canal | 3 | 1 h 37m | 0.04 |
| United Utilities | Rickerbys CSO | River Caldew | 2 | 1 h 22m | 0.04 |
| United Utilities | Gilford Park CSO | River Petteril | 1 | 1 h 22m | 0.04 |
| United Utilities | Faugh WwTW | Trout Beck | 2 | 0 h 46m | 0 |
| United Utilities | Rear of Pirelli Factory CSO | River Caldew | 2 | 0 h 40m | 0 |
| United Utilities | Lime Street Wastewater Network Pumping Station | River Caldew | 1 | 0 h 30m | 0 |
| United Utilities | STONEGARTH CSO | Dow Beck Culvert | 1 | 0 h 30m | 0 |
| United Utilities | Finn Avenue CSO | Dow Beck Culvert | 1 | 0 h 18m | 0 |
| United Utilities | Caird Avenue CSO | Pow Beck Via Sws | 0 | 0 h | 0 |
| United Utilities | Hayton PS | Bye Gill | 0 | 0 h | 0 |
| United Utilities | Caird Avenue CSO | Pow Beck Via Sws | 0 | 0 h | 0 |
| United Utilities | B&Q CSO | River Caldew | 0 | 0 h | 0 |
| United Utilities | Rickerby Park CSO | River Eden | 0 | 0 h | 0 |
| United Utilities | CARLISLE WwTW | River Eden | 0 | 0 h | 0 |
| United Utilities | Warwick Bridge WWTW | River Eden | 0 | 0 h | 0 |
| United Utilities | Low Crosby PS | River Eden | 0 | 0 h | 0 |
| United Utilities | CSO at Gelt Road | Brampton Beck | 0 | 0 h | 0 |
| United Utilities | CSO at Gelt Road | Brampton Beck | 0 | 0 h | 0 |
| United Utilities | Little Corby PS | River Eden | 0 | 0 h | 0 |
| United Utilities | Heads Nook Pumping Station (10507) (CAR0080) | Trout Beck | 0 | 0 h | 0 |
| United Utilities | Heads Nook Pumping Station (10507) (CAR0080) | Trout Beck | 0 | 0 h | 0 |
| United Utilities | Great Corby Syphon CSO | River Eden | 0 | 0 h | 0 |
| United Utilities | STONEGARTH CSO | Dow Beck Culvert | 0 | 0 h | 0 |
| United Utilities | Cumcatch (Milton West) PS | Milton Beck | 0 | 0 h | 0 |
| United Utilities | Rickerbys CSO | River Caldew | 0 | 0 h | 0 |
| United Utilities | Warwick on Eden PS | River Eden | 0 | 0 h | 0 |
| United Utilities | CARLISLE WwTW | River Eden | 0 | 0 h | 0 |
| United Utilities | Lime Street Wastewater Network Pumping Station | River Caldew | 0 | 0 h | 0 |
| United Utilities | Low Crosby PS | River Eden | 0 | 0 h | 0 |
| United Utilities | Warwick on Eden PS | River Eden | 0 | 0 h | 0 |
| United Utilities | Castle Carrok CSO (Adjacent Donlea House) | Castle Carrock Beck | 0 | 0 h | 0 |
| United Utilities | Rickerby Park CSO | River Eden | 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.