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Middlesbrough and Thornaby East - 2025 Sewage

Polluted by sewage 1,795 hours in 2025 , monitoring offline 4,541 hours , potential overflows 1,530 hours

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Contains OS Data © Crown copyright & database right 2021-2024
© Top of the Poops 2021-2024

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View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in Middlesbrough and Thornaby East for 2025. It is an estimate, based on very poor quality live data from the Water Companies. This may not align with the 'official' reported sewage values from the water companies, which is reported in April following then end of the year - so 2025 numbers are reported in April 2026.

What's a potential overflow? If the CSO goes 'Offline' while its Overflowing, we don't know if it stopped overflowing until we get a 'Stop' event.

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Daily Data

Jan - 430 hours , 72 potential
Feb - 30 hours , 890 potential
Mar - 34 hours , 568 potential
Apr - 0 hours , 95 offline
May - 28 hours , 599 offline
Jun - 15 hours , 245 offline
Jul - 146 hours , 32 offline
Aug - 21 hours , 38 offline
Sept - 246 hours , 856 offline
Oct - 47 hours , 312 offline
Nov - 535 hours , 103 offline
Dec - 258 hours , 224 offline
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Northumbrian Water CARGO FLEET FOUL SEWAGE PUMPING STATION Ormsby Beck 30 437h 13m -
Northumbrian Water Unknown Unknown 41 328h 12m -
Northumbrian Water Unknown Unknown 45 160h 29m -
Northumbrian Water Unknown Unknown 21 70h 45m 0 h
Northumbrian Water Unknown Unknown 20 56h 25m 14 h
Northumbrian Water Unknown Unknown 23 54h 45m -
Northumbrian Water Unknown Unknown 22 53h 3m 544 h
Northumbrian Water Unknown Unknown 13 42h 6m 61 h
Northumbrian Water ACKLAM ROAD CSO Old River Tees 11 40h 12m -
Northumbrian Water Unknown Unknown 12 39h 58m 31 h
Northumbrian Water Unknown Unknown 13 36h 58m 1,489 h
Northumbrian Water CARGO FLEET FOUL SEWAGE PUMPING STATION Ormsby Beck 7 32h 5m -
Northumbrian Water Unknown Unknown 14 30h 26m 8 h
Northumbrian Water SUN STREET CSO River Tees 7 29h 32m -
Northumbrian Water ACKLAM ROAD CSO Old River Tees 8 28h 14m -
Northumbrian Water LEVEN ROAD CSO Ormesby Beck 6 24h 54m -
Northumbrian Water PRIORY ROAD CSO Old River Tees 7 24h 18m -
Northumbrian Water Unknown Unknown 12 22h 36m 224 h
Northumbrian Water NEWPORT ROAD CSO River Tees Estuary 10 22h 20m 248 h
Northumbrian Water SUN STREET CSO River Tees 7 21h 48m -
Northumbrian Water CSO AT GREEN LANE Tees 10 21h 12m -
Northumbrian Water OLD RIVER TEES SPS Old River Tees 6 20h 4m -
Northumbrian Water Unknown Unknown 11 19h 56m 210 h
Northumbrian Water Unknown Unknown 11 16h 46m 46 h
Northumbrian Water CORNFIELD ROAD PUMPING STATION Tees Estuary 3 16h 20m -
Northumbrian Water Unknown Unknown 9 14h 40m 1,032 h
Northumbrian Water Unknown Unknown 7 12h 59m 15 h
Northumbrian Water Unknown Unknown 3 12h 18m -
Northumbrian Water STAINSBY ROAD CSO Old River Tees 3 11h 48m -
Northumbrian Water Unknown Unknown 5 11h 39m -
Northumbrian Water GROVE ROAD CSO M009 Ormesby Beck 4 10h 24m -
Northumbrian Water VULCAN STREET PUMP STN River Tees 3 10h 10m -
Northumbrian Water Unknown Unknown 7 8h 46m 7 h
Northumbrian Water ACKLAM ROAD CSO Old River Tees 5 8h 20m -
Northumbrian Water Unknown Unknown 10 7h 59m -
Northumbrian Water Unknown Unknown 7 5h 50m 1,606 h
Northumbrian Water SNOWDON ROAD PS River Tees 4 4h 31m -
Northumbrian Water VERONICA STREET CSO Ormesby Beck 5 4h 2m 103 h
Northumbrian Water Unknown Unknown 6 3h 6m 30 h
Northumbrian Water STATION STREET CSO Tees Estuary 5 2h 58m -
Northumbrian Water Unknown Unknown 8 2h 56m 144 h
Northumbrian Water Unknown Unknown 1 1h 45m -
Northumbrian Water THORNTON STREET PS Middle Beck 5 1h 42m -
Northumbrian Water Unknown Unknown 2 1h 20m -
Northumbrian Water JAMES STREET SSO Middle Beck 4 1h 18m -
Northumbrian Water DEEPDALE AVENUE NO2 CSO (M007) Marton West Beck 2 1h 16m -
Northumbrian Water Unknown Unknown 2 1h 14m 244 h
Northumbrian Water Unknown Unknown 2 1h 4m 7 h
Northumbrian Water TEDDER AVENUE SSO Stainsby Beck 1 0h 46m -
Northumbrian Water OAKFIELD ROAD CSO Ormesby Beck 3 0h 40m -
Northumbrian Water A66 RIDER SEWER CSO Old River Tees 2 0h 36m -
Northumbrian Water Unknown Unknown 1 0h 28m -
Northumbrian Water RAVENSCROFT AVE CSO Marton West Beck 1 0h 6m -
Northumbrian Water Unknown Unknown 0 0h 0 h
Northumbrian Water Unknown Unknown 0 0h -
Northumbrian Water ALLENSWAY CSO Stainsby Beck 0 0h -

Data Sources & Accuracy

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

Annual figures up to and including 2025 come from official water company returns. The 2026 figure is our own estimate, derived continuously from the companies' live data feeds.

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.