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Polluted by sewage 439 times in 2025 lasting 1,481 hours
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Donate NowHere are all the reported sewage overflow totals for Thornaby-on-Tees in 2025. Sometimes sewage can be being dumped for months at a time.
Reporting refers to how much of the time the monitoring was active. In this place all the declared CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s appeared to have monitoring enabled for more than 50% of the year
| Company | Waterway | Site | Sewage Dumps | Duration (Hours) | Reporting % |
|---|---|---|---|---|---|
| Northumbrian Water | River Tees | PORTRACK SEWAGE TREATMENT WORKS | 110 | 651 | 99.9 |
| Northumbrian Water | Old River Tees | ACKLAM ROAD CSO | 66 | 196 | 89.2 |
| Northumbrian Water | River Tees | BISHOP STREET NORTH SSO | 69 | 195 | 95.93 |
| Northumbrian Water | Tees Estuary | SUN STREET STORM SEWAGE OVERFLOW | 36 | 124 | 99.25 |
| Northumbrian Water | Old River Tees | PRIORY ROAD CSO | 29 | 79 | 98.9 |
| Northumbrian Water | Old River Tees | OLD RIVER TEES PUMPING STATION | 25 | 58 | 100 |
| Northumbrian Water | Tees | CSO AT GREEN LANE | 23 | 39 | 95 |
| Northumbrian Water | River Tees Estuary | BOWESFIELD LANE CSO | 15 | 30 | 100 |
| Northumbrian Water | Tees Estuary | CORNFIELD ROAD PUMPING STATION | 6 | 28 | 99.9 |
| Northumbrian Water | Old River Tees | STAINSBY ROAD CSO | 7 | 26 | 74.3 |
| Northumbrian Water | Tees Estuary | STATION STREET CSO | 25 | 25 | 97.3 |
| Northumbrian Water | Tees | CASTLETON WALK CSO | 12 | 18 | 96.5 |
| Northumbrian Water | Old River Tees | A66 RIDER SEWER CSO | 4 | 2 | 97 |
| Northumbrian Water | Stainsby Beck | TEDDER AVENUE SSO | 2 | 2 | 94.3 |
| Northumbrian Water | Tees Estuary | BOATHOUSE LANE PUMPING STATION | 9 | 1 | 100 |
| Northumbrian Water | River Tees | TOWER STREET CSO | 1 | 0 | 95.25 |
| Northumbrian Water | Stainsby Beck | ALLENSWAY CSO | 0 | 0 | 99.3 |
| Northumbrian Water | River Tees Saline Estuary | CSO AND SPS AT MIDDLESBROUGH ROAD | 0 | 0 | 99.7 |
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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Get in touch if you have queries or want to discuss our data.
press [at] top-of-the-poops.org