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Here are all the reported sewage overflow totals for River Tees in 2025. Sometimes sewage can be being dumped for months at a time.
| Company | Waterway | Site | Sewage Dumps | Duration (Hours) | Reporting % |
|---|---|---|---|---|---|
| Northumbrian Water | River Tees | MIDDLETON-IN-TEESDALE SEWAGE TREATM | 81 | 759 | 93.65 |
| Northumbrian Water | River Tees | PORTRACK SEWAGE TREATMENT WORKS | 110 | 651 | 99.9 |
| Northumbrian Water | River Tees | MIDDLETON AIRPORT STORM TW | 42 | 579 | 98 |
| Northumbrian Water | River Tees | CLOCKWOOD SEWAGE PUMPING STATION | 57 | 412 | 99.8 |
| Northumbrian Water | River Tees | GAINFORD SEWAGE TREATMENT WORKS | 43 | 253 | 92.25 |
| Northumbrian Water | River Tees | PORT CLARENCE EAST PUMPING STATION | 30 | 216 | 94.2 |
| Northumbrian Water | River Tees | MIDDLETON ONE ROW CSO | 38 | 200 | 99.2 |
| Northumbrian Water | River Tees | BISHOP STREET NORTH SSO | 69 | 195 | 95.93 |
| Northumbrian Water | River Tees | WHORLTON STW | 19 | 157 | 99.9 |
| Northumbrian Water | River Tees | BARNARD CASTLE STW | 29 | 136 | 99.85 |
| Northumbrian Water | River Tees | HURWORTH PLACE SPS | 23 | 61 | 59.4 |
| Northumbrian Water | River Tees | ACKLAM STREET OUTFALL | 44 | 60 | 100 |
| Northumbrian Water | River Tees | ROMALDKIRK SEWAGE DISPOSAL WORKS | 24 | 53 | 99.55 |
| Northumbrian Water | River Tees | WINSTON STW | 45 | 44 | 97.5 |
| Northumbrian Water | River Tees | PORT CLARENCE WEST PS OUTFALL | 7 | 38 | 100 |
| Northumbrian Water | River Tees | AISLABY QUAY SPS | 4 | 38 | 94.1 |
| Northumbrian Water | River Tees | DEMESNES MILL CSO | 20 | 25 | 98 |
| Northumbrian Water | River Tees | BARNARD CASTLE STW | 16 | 23 | 99.3 |
| Northumbrian Water | River Tees | VULCAN STREET OUTFALL | 8 | 23 | 90.4 |
| Northumbrian Water | River Tees | ATLAS WYND SEWAGE PUMPING STATION | 13 | 18 | 99.9 |
| Northumbrian Water | River Tees | SNOWDON ROAD PS | 23 | 15 | 99.9 |
| Northumbrian Water | River Tees | THE LENDINGS (STARTFORTH) SPS | 6 | 15 | 100 |
| Northumbrian Water | River Tees | GALGATE CSO | 14 | 14 | 96.6 |
| Northumbrian Water | River Tees | CSO AT REAR OF 1 RIVER TERRACE | 4 | 2 | 100 |
| Northumbrian Water | River Tees | MAYFAIR ROAD CSO | 3 | 0 | 93 |
| Northumbrian Water | River Tees | YARM BRIDGE CSO | 6 | 0 | 94.7 |
| Northumbrian Water | River Tees | TOWER STREET CSO | 1 | 0 | 95.25 |
| Northumbrian Water | River Tees | CALIFORNIA ROW CSO | 1 | 0 | 98.1 |
| Northumbrian Water | River Tees | A CSO AT SMITHS DOCK ROAD | 0 | 0 | 100 |
| Northumbrian Water | River Tees | STAPLETON SPS | 0 | 0 | 99.8 |
| Northumbrian Water | River Tees | YARM ROAD / MUIRFIELD ROAD CSO | 0 | 0 | 94 |
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.
Get in touch if you have queries or want to discuss our data.
press [at] top-of-the-poops.org