Harwich and North Essex - 2025 Sewage

Polluted by sewage 1,290 hours in 2025

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

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You're looking at the totals that we have calculated for sewage in Harwich and North Essex 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.

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Constituencies near Harwich and North Essex

Daily Data

We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for Harwich and North Essex, 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.

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Daily data is experimental and data is not guaranteed to be accurate. Please inform us of any issue, we will fix.
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Total Duration (days)
Anglian Water Colchester Water Recycling Centre Colne Estuary 36 554 h 34m 23.08
Anglian Water WIVENHOE-PHILLIP RD OV Tidal River Colne 29 172 h 35m 7.17
Anglian Water EIGHT ASH GREEN-FORD ST TPS River Colne 18 127 h 50m 5.29
Anglian Water Great Bromley Water Recycling Centre Bromley Brook 10 102 h 40m 4.25
Anglian Water W BERGHOLT STW River Colne 4 76 h 42m 3.17
Anglian Water Colchester - Rowhedge Regent Court Combined Sewer Overflow River Colne 17 46 h 1m 1.92
Anglian Water EIGHT ASH GREEN STW River Colne 6 25 h 37m 1.04
Anglian Water MANNINGTREE STW Wignall Brook Stour Estuary 7 16 h 58m 0.67
Anglian Water COLCHESTER-HAVEN RD OV Tidal River Colne 11 13 h 30m 0.54
Anglian Water Colchester Water Recycling Centre Colne Estuary 4 12 h 38m 0.5
Anglian Water COLCHESTER-BOURNE MILL OV Bourne Brook 19 12 h 29m 0.5
Anglian Water GT HORKESLEY-IVY LODGE R SP Horkesley Black Brook 1 11 h 21m 0.46
Anglian Water COLCHESTER STW Colne Estuary 10 10 h 17m 0.42
Anglian Water HARWICH AND DOVERCOURT STW Tidal River Stour 3 9 h 33m 0.38
Anglian Water EIGHT ASH GREEN-FORD ST TPS River Colne 1 8 h 30m 0.33
Anglian Water West Mersea Water Recycling Centre Blackwater Estuary 1 8 h 13m 0.33
Anglian Water LAWFORD-WIGNALL ST SP Wignall Brook 1 8 h 5m 0.33
Anglian Water DEDHAM STW Dedham Mill Tail- Rv Stour 2 7 h 46m 0.29
Anglian Water Brightlingsea Overflow Lower Park Road West Dyke 21 7 h 36m 0.29
Anglian Water Brightlingsea Station Road Combined Sewer Overflow West Dyke 12 7 h 7m 0.29
Anglian Water Colchester - Rowhedge Regent Court Combined Sewer Overflow River Colne 2 7 h 0.29
Anglian Water Brightlingsea West Dyke Terminal Pumping Station West Dyke 3 6 h 33m 0.25
Anglian Water COLCHESTER STW Colne Estuary 7 5 h 50m 0.21
Anglian Water THORRINGTON STW Tove 3 5 h 44m 0.21
Anglian Water HARWICH AND DOVERCOURT STW Tidal River Stour 9 5 h 23m 0.21
Anglian Water LAWFORD-WIGNALL ST SP Wignall Brook 2 4 h 44m 0.17
Anglian Water Brightlingsea Overflow (Bellfld 35) West Dyke 7 3 h 45m 0.12
Anglian Water Brightlingsea - Spring Road Combined Sewer Overflow West Dyke 7 2 h 42m 0.08
Anglian Water DEDHAM STW Dedham Mill Tail- Rv Stour 1 2 h 0.08
Anglian Water HARWICH AND DOVERCOURT STW Tidal River Stour 4 1 h 59m 0.04
Anglian Water BRIGHTLINGSEA-SAMPSONS RD SP Unnamed Brightlingsea Bro 2 1 h 0.04
Anglian Water COLCHESTER-HAVEN RD OV Tidal River Colne 1 1 h 0.04
Anglian Water EIGHT ASH GREEN STW River Colne 1 1 h 0.04
Anglian Water Colchester - Rowhedge Albion Street Combined Sewer Overflow River Colne 1 0 h 30m 0
Anglian Water MANNINGTREE STW Wignall Brook Stour Estuary 1 0 h 29m 0
Anglian Water COLCHESTER STW Colne Estuary 1 0 h 15m 0
Anglian Water Brightlingsea Overflow Lower Park Road West Dyke 1 0 h 15m 0
Anglian Water Brightlingsea Overflow (Western Road) Community Centre West Dyke 1 0 h 15m 0
Anglian Water COLCHESTER-BOURNE MILL OV Bourne Brook 1 0 h 14m 0
Anglian Water COLCHESTER STW Colne Estuary 0 0 h 0
Anglian Water Brightlingsea - Spring Road Combined Sewer Overflow West Dyke 0 0 h 0
Anglian Water THORRINGTON WRC Ouse 0 0 h 0
Anglian Water THORRINGTON WRC Ouse 0 0 h 0
Anglian Water GT HORKESLEY-IVY LODGE R SP Horkesley Black Brook 0 0 h 0
Anglian Water Mistley, School Lane CSO River Stour 0 0 h 0
Anglian Water West Mersea Water Recycling Centre Blackwater Estuary 0 0 h 0
Anglian Water THORRINGTON STW Tove 0 0 h 0
Anglian Water WIVENHOE-PHILLIP RD OV Tidal River Colne 0 0 h 0
Anglian Water Colchester - Rowhedge Albion Street Combined Sewer Overflow River Colne 0 0 h 0
Anglian Water Brightlingsea Station Road Combined Sewer Overflow West Dyke 0 0 h 0
Anglian Water W BERGHOLT STW River Colne 0 0 h 0
Anglian Water Brightlingsea Overflow (Western Road) Community Centre West Dyke 0 0 h 0
Anglian Water ELMSTEAD-HOLLY WY THTCHRS D SP Frating Brook 0 0 h 0
Anglian Water Brightlingsea Overflow (Bellfld 35) West Dyke 0 0 h 0
Anglian Water WIVENHOE-THE FOLLY OV Tidal River Colne 0 0 h 0
Anglian Water Brightlingsea West Dyke Terminal Pumping Station West Dyke 0 0 h 0
Anglian Water HARWICH AND DOVERCOURT STW Tidal River Stour 0 0 h 0
Anglian Water EIGHT ASH GREEN-HEATHFIELDS SP River Colne 0 0 h 0
Anglian Water Dovercourt - Low Road Pumping Station South Hall Creek 0 0 h 0
Anglian Water Rowhedge - High Street Pumping Station Birch Brook 0 0 h 0
Anglian Water Great Bromley Water Recycling Centre Bromley Brook 0 0 h 0
Anglian Water BRIGHTLINGSEA-SAMPSONS RD SP Unnamed Brightlingsea Bro 0 0 h 0

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.

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© 2020-2025 Top-Of-The-Poops CC-BY-SA 4.0,
© Openstreetmap contributors, Contains OS data © Crown copyright and database right 2021-2025,
Contains Water UK National Storm Overflow Hub Data CC-BY-SA 4.0 and analysis © 2025 Top-Of-The-Poops

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