Middlesbrough and Thornaby East was polluted by sewage 584 times in 2024
lasting 2,132 hours

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Contains OS Data © Crown copyright & database right 2021-2024
© Top of the Poops 2021-2024
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✔ means we have experimental daily data since 2023
Live data for Middlesbrough and Thornaby East in 2025
So far this year (as of Apr 16, 2025, 5:45 PM) there has been 2,025 hours of sewage overflows
Totals for Middlesbrough and Thornaby East in 2024
21 Sites polluted by Northumbrian Water
584 sewage dumps
2,132 h duration
That's 2.96 months. On average 1.6 times a day
Change Over Time
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Daily Data
We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for Middlesbrough and Thornaby East, 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.
     Monitoring Online      Monitoring Offline      Polluting      Potentially Polluting      Unknown
Daily data is experimental and data is not guaranteed to be accurate. Please inform us of any issue, we will fix.

Pollution Summary 2024

Here are all the reported sewage overflow totals for Middlesbrough and Thornaby East in 2024. 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 constituency 0 of the total 23 CSO locations had reporting enabled for less than half the year, of which 0 had zero reporting.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Northumbrian Water Ormsby Beck CARGO FLEET STW (OUTLET B) 187 1,326 99.1
Northumbrian Water Old River Tees ACKLAM ROAD CSO 78 225 91.9
Northumbrian Water Tees Estuary SUN STREET STORM SEWAGE OVERFLOW 55 139 98.65
Northumbrian Water Ormesby Beck LEVEN ROAD CSO 20 89 87.3
Northumbrian Water Old River Tees PRIORY ROAD CSO 30 66 92
Northumbrian Water Old River Tees OLD RIVER TEES PUMPING STATION 33 65 100
Northumbrian Water River Tees ACKLAM STREET OUTFALL 55 44 100
Northumbrian Water River Tees Estuary NEWPORT ROAD CSO 43 40 100
Northumbrian Water Old River Tees STAINSBY ROAD CSO 9 40 99.7
Northumbrian Water Ormesby Beck GROVE ROAD CSO M009 18 33 96.6
Northumbrian Water Tees Estuary CORNFIELD ROAD PUMPING STATION 4 20 96.2
Northumbrian Water River Tees VULCAN STREET OUTFALL 6 19 100
Northumbrian Water Tees Estuary STATION STREET CSO 21 7 99.7
Northumbrian Water Middle Beck JAMES STREET SSO 4 3 99.9
Northumbrian Water Middle Beck THORNTON STREET PS 6 2 96.3
Northumbrian Water Ormesby Beck VERONICA STREET CSO 1 1 99.7
Northumbrian Water Marton West Beck DEEPDALE AVENUE NO2 CSO (M007) 3 1 94.6
Northumbrian Water Ormesby Beck OAKFIELD ROAD CSO 3 1 99.9
Northumbrian Water River Tees SNOWDON ROAD PS 3 1 68.1
Northumbrian Water Old River Tees A66 RIDER SEWER CSO 3 1 87.9
Northumbrian Water Stainsby Beck TEDDER AVENUE SSO 2 0 99.7
Northumbrian Water Stainsby Beck ALLENSWAY CSO 0 0 100
Northumbrian Water Marton West Beck RAVENSCROFT AVE CSO 0 0 99.7

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. This 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.