It's a Dirty Business

Watch Channel 4's documentary about the state of the water industry.

Colchester - Live Sewage

Polluted by sewage 215 hours in 2026 , monitoring offline 1,476 hours so far..

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

Which Year?

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✔ means we have live data (𝑥 if not)

View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in Colchester so far for 2026. It is an estimate, based on very poor quality live data from the Water Companies. The water companies report their sewage to the Environment Agency every year in April. You can see the last reported year in the other page

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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Constituencies near Colchester

Daily Data

Jan - 35 hours , 744 offline
Feb - 162 hours , 672 offline
Mar - 17 hours , 60 offline
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Anglian Water Colchester - Hythe Bridge Combined Sewer Overflow River Colne 22 158 h 39m -
Anglian Water LAYER DE LA HAYE STW Roman River 5 31 h 37m -
Anglian Water COLCHESTER-DILBRIDGE RD OV Tendring Streams 3 13 h 15m -
Anglian Water COLCHESTER-ROWHEDGE RD Tendring Streams 5 6 h 15m -
Anglian Water COLCHESTER-CRICKET PAV OV Tendring Streams 3 1 h 32m -
Anglian Water COLCHESTER-MILE END RD OV Tendring Streams 2 1 h 29m -
Anglian Water COLCHESTER-MONKWICK OV Salary Brook 2 1 h 29m -
Anglian Water Colchester - Hunting Gate Combined Sewer Overflow Tidal River Colne 2 0 h 30m -
Anglian Water Colchester St Albans Road Combined Sewer Overflow Holland Brook 1 0 h 14m -
Anglian Water Colchester - Hunting Gate Combined Sewer Overflow Tidal River Colne 0 0 h -
Anglian Water COLCHESTER-GREENSTEAD RD OV Salary Brook 0 0 h -
Anglian Water COLCHESTER-BALKERNE HILL OV Tendring Stream 0 0 h -
Anglian Water COLCHESTER-CRICKET PAV OV Tendring Streams 0 0 h -
Anglian Water COLCHESTER-SPRING LA OV River Colne 0 0 h -
Anglian Water COLCHESTER-SHEARWATER MEWS OV Salary Brook 0 0 h -
Anglian Water COLCHESTER-MALDON RD OV Tendring Stream 0 0 h -
Anglian Water COLCHESTER-MILE END RD OV Tendring Streams 0 0 h -
Anglian Water COLCHESTER-EAST BAY MAIN INT River Colne 0 0 h -
Anglian Water COLCHESTER-GREENSTEAD RD OV Salary Brook 0 0 h -
Anglian Water COLCHESTER-ROWHEDGE RD Tendring Streams 0 0 h -
Anglian Water COLCHESTER-NORTH GATE OV Tendring Streams 0 0 h -
Anglian Water COLCHESTER-BERECHURCH RD Salary Brook 0 0 h -
Anglian Water COLCHESTER-EAST BR (EAST)OV River Colne 0 0 h -
Anglian Water COLCHESTER-MONKWICK OV Salary Brook 0 0 h -
Anglian Water LAYER DE LA HAYE STW Roman River 0 0 h -
Anglian Water COLCHESTER-EAST BR (EAST)OV River Colne 0 0 h -
Anglian Water Colchester St Albans Road Combined Sewer Overflow Holland Brook 0 0 h -
Anglian Water COLCHESTER-DILBRIDGE RD OV Tendring Streams 0 0 h -
Anglian Water COLCHESTER-BERECHURCH RD Salary Brook 0 0 h -
Anglian Water Colchester - Hythe Bridge Combined Sewer Overflow River Colne 0 0 h -
Anglian Water COLCHESTER-SHEARWATER MEWS OV Salary Brook 0 0 h -
Anglian Water COLCHESTER-IPSWICH RD OV Tendring Streams 0 0 h -
Anglian Water COLCHESTER-BALKERNE HILL OV Tendring Stream 0 0 h -
Anglian Water COLCHESTER-IPSWICH RD OV Tendring Streams 0 0 h 1,476 h

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

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.