Polluted by sewage 1,737 hours in 2025
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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 Redcar, 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) |
|---|---|---|---|---|---|
| Northumbrian Water | MARSKE SEWAGE TREATMENT WORKS | North Sea | 32 | 318 h 50m | 13.25 |
| Northumbrian Water | Unknown | Unknown | 35 | 188 h 35m | 7.83 |
| Northumbrian Water | Unknown | Unknown | 39 | 161 h 9m | 6.71 |
| Northumbrian Water | BRAN SANDS WW TREATMENT WORKS | Dabholm Gut | 22 | 154 h 37m | 6.42 |
| Northumbrian Water | LAKES CSO | North Sea | 22 | 147 h 34m | 6.12 |
| Northumbrian Water | Unknown | Unknown | 9 | 125 h 25m | 5.21 |
| Northumbrian Water | Unknown | Unknown | 21 | 114 h 42m | 4.75 |
| Northumbrian Water | Unknown | Unknown | 16 | 72 h 11m | 3 |
| Northumbrian Water | Unknown | Unknown | 12 | 56 h 14m | 2.33 |
| Northumbrian Water | GRANVILLE TCE SSO | North Sea | 7 | 37 h 6m | 1.54 |
| Northumbrian Water | Unknown | Unknown | 11 | 35 h 21m | 1.46 |
| Northumbrian Water | TEES DOCK ROAD CSO | Kinkerdale Beck | 7 | 32 h 30m | 1.33 |
| Northumbrian Water | Unknown | Unknown | 4 | 23 h 12m | 0.96 |
| Northumbrian Water | Unknown | Unknown | 12 | 20 h 16m | 0.83 |
| Northumbrian Water | Unknown | Unknown | 8 | 17 h 34m | 0.71 |
| Northumbrian Water | Unknown | Unknown | 3 | 14 h 50m | 0.58 |
| Northumbrian Water | HARWAL ROAD CSO (REF. L16) | Fleet Beck | 8 | 14 h 50m | 0.58 |
| Northumbrian Water | DORMER WAY PS | Normanby Beck | 4 | 14 h 6m | 0.58 |
| Northumbrian Water | Unknown | Unknown | 9 | 13 h 38m | 0.54 |
| Northumbrian Water | MCCLEAN AVENUE CSO (REF NO L15) | Fleet Beck | 5 | 13 h 12m | 0.54 |
| Northumbrian Water | HOWLE BECK OVERFLOWS (MARSKE CEMETE | North Sea | 2 | 11 h 58m | 0.46 |
| Northumbrian Water | Unknown | Unknown | 2 | 11 h 10m | 0.46 |
| Northumbrian Water | NEW COATHAM CSO REF L73 | North Sea | 4 | 10 h 44m | 0.42 |
| Northumbrian Water | Unknown | Unknown | 8 | 10 h 43m | 0.42 |
| Northumbrian Water | Unknown | Unknown | 5 | 10 h 32m | 0.42 |
| Northumbrian Water | THE STRAY STORM RETENTION TANK | North Sea | 2 | 9 h 56m | 0.38 |
| Northumbrian Water | NEW MARSKE METHODIST CHURCH | North Sea | 5 | 9 h 46m | 0.38 |
| Northumbrian Water | BYDALE SCHOOL CSO | North Sea | 4 | 9 h 36m | 0.38 |
| Northumbrian Water | PASTURE LANE CSO | Dabholme Beck | 4 | 9 h 10m | 0.38 |
| Northumbrian Water | Unknown | Unknown | 6 | 8 h 49m | 0.33 |
| Northumbrian Water | WEST COATHAM LANE CSO | Fleet | 3 | 6 h 40m | 0.25 |
| Northumbrian Water | ABBEY COURT (AMPLEFORTH AVENUE) CSO | Cross Beck | 2 | 5 h 58m | 0.21 |
| Northumbrian Water | SKIPPERS LANE INDUSTRIAL ESTATE PS | Spencer Beck | 3 | 5 h 36m | 0.21 |
| Northumbrian Water | Unknown | Unknown | 8 | 4 h 58m | 0.17 |
| Northumbrian Water | Unknown | Unknown | 4 | 4 h 33m | 0.17 |
| Northumbrian Water | Unknown | Unknown | 3 | 4 h 14m | 0.17 |
| Northumbrian Water | Unknown | Unknown | 6 | 4 h 2m | 0.17 |
| Northumbrian Water | LOCKE PARK CSO | Fleet | 1 | 2 h 50m | 0.08 |
| Northumbrian Water | QUEEN STREET ALLOTTMENTS CSO | Dabholme Beck | 3 | 2 h 46m | 0.08 |
| Northumbrian Water | Unknown | Unknown | 3 | 2 h 36m | 0.08 |
| Northumbrian Water | CHURCH LANE HIGH STREET CSO | Holme Beck | 2 | 2 h 34m | 0.08 |
| Northumbrian Water | Unknown | Unknown | 10 | 2 h 31m | 0.08 |
| Northumbrian Water | STATION ROAD CSO | North Sea | 3 | 2 h | 0.08 |
| Northumbrian Water | Unknown | Unknown | 5 | 1 h 44m | 0.04 |
| Northumbrian Water | GRINKLE ROAD CSO | Unnamed Watercouse - Tees Estu | 1 | 1 h 34m | 0.04 |
| Northumbrian Water | Unknown | Unknown | 6 | 1 h 34m | 0.04 |
| Northumbrian Water | ESKDALE ROAD CSO | Fleet Beck | 1 | 1 h 22m | 0.04 |
| Northumbrian Water | MARSKE SEWAGE TREATMENT WORKS | North Sea | 4 | 1 h 3m | 0.04 |
| Northumbrian Water | Unknown | Unknown | 2 | 0 h 2m | 0 |
| Northumbrian Water | DALE STREET CSO | Long Beck | 0 | 0 h | 0 |
| Northumbrian Water | MARINE PARADE CSO | Pit Hills Stell | 0 | 0 h | 0 |
| Northumbrian Water | CARAVAN PARK CSO | Pit Hills Stell | 0 | 0 h | 0 |
| Northumbrian Water | Unknown | Unknown | 0 | 0 h | 0 |
| Northumbrian Water | OAK ROAD CSO | North Sea | 0 | 0 h | 0 |
| Northumbrian Water | CSO & PUMPING STN DOCK ROAD | Tidal River Tees | 0 | 0 h | 0 |
| Northumbrian Water | Unknown | Unknown | 0 | 0 h | 0 |
| Northumbrian Water | GREYSTONE RD SSO | Kettle 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.