Colchester was polluted by sewage 192 times in 2023
lasting 457 hours
- but monitoring was disabled in some locations, so could be more

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Contains OS Data © Crown copyright & database right 2021-2023
© Top of the Poops 2021-2023
✔ means we have experimental daily data since 2023
Totals for Colchester in 2023
11 Sites polluted by Anglian Water
192 sewage dumps
457 h duration
That's 19.04 days. 3.7 times a week, on average
Change Over Time
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Constituencies near Colchester

Pollution Summary 2023

Here are all the reported sewage overflow totals for Colchester in 2023. 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 2 of the total 15 CSO locations had reporting enabled for less than half the year, of which 2 had zero reporting.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Anglian Water Colne Estuary COLCHESTER WATER RECYCLING CENTRE 55 210 88.13
Anglian Water River Colne COLCHESTER-SPRING LANE CSO 6 95 100
Anglian Water Holland Brook COLCHESTER ST ALBANS ROAD CSO 37 67 100
Anglian Water Tidal River Colne COLCHESTER-HAVEN ROAD CSO 27 52 100
Anglian Water Tidal River Colne COLCHESTER HUNTING GATE CSO 26 12 100
Anglian Water Unknown SPORTS CENTRE MILL RD. 6 9 40
Anglian Water River Colne COLCHESTER-EAST BAY MAIN INT CSO 8 5 84.6
Anglian Water Tendring Streams SPORTS CENTRE MILL RD. 8 2 99.68
Anglian Water River Colne HYTHE BRIDGE 16 2 100
Anglian Water Bourne Brook COLCHESTER-BOURNE MILL CSO 2 0 87.5
Anglian Water Tendring Stream SPORTS CENTRE MILL RD. 1 0 66.67
Anglian Water Porter'S Brook HARWICH RD/HAZELTON RD 0 0 0
Anglian Water Sheepen Road Ditch SHEEPEN ROAD 0 0 0
Anglian Water River Colne COLCHESTER-EAST BR (EAST) CSO OV 0 0 92.4
Anglian Water Salary Brook COLCHESTER - SHEARWATER MEWS CSO 0 0 98.6

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.