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North West Essex - 2025 Sewage

Polluted by sewage 3,428 hours in 2025 , monitoring offline 10,798 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 live data (𝑥 if not)

View Annual Sewage Data

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

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 North West Essex

Daily Data

Jan - 333 hours , 744 offline
Feb - 73 hours , 672 offline
Mar - 4 hours , 893 offline
Apr - 23 hours , 726 offline
May - 1 hours , 744 offline
Jun - 0 hours , 720 offline
Jul - 18 hours , 858 offline
Aug - 45 hours , 797 offline
Sept - 19 hours , 720 offline
Oct - 28 hours , 744 offline
Nov - 2,113 hours , 1,533 offline
Dec - 764 hours , 1,597 offline
Daily data is experimental and data is not guaranteed to be accurate. Please inform us of any issue, we will fix.
Please note: We don't have rainfall data for Wales. If you know where to source it please let us know!
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Anglian Water GREAT EASTON STW (ESSEX) River Chelmer 44 656 h 24m -
Anglian Water GREAT DUNMOW STW River Chelmer 29 556 h 1m -
Anglian Water GT EASTON-BRIDGEFOOT TPS River Chelmer 27 551 h 25m -
Anglian Water WICKEN BONHUNT-SP Wicken Water 29 542 h 57m -
Anglian Water THAXTED-PARK STREET River Chelmer 46 531 h 54m 114 h
Thames Water Stansted Mountfitchet STW River Stort 16 158 h 15m -
Thames Water Stansted Mountfitchet STW River Stort 13 154 h 45m -
Anglian Water GREAT EASTON STW (ESSEX) River Chelmer 8 49 h 47m -
Anglian Water GT EASTON-BRIDGEFOOT TPS River Chelmer 6 45 h 49m -
Anglian Water GREAT DUNMOW STW River Chelmer 6 30 h 46m -
Anglian Water GREAT CHESTERFORD STW River Cam 2 28 h 14m -
Thames Water Leaden Roding STW River Roding 6 26 h 45m -
Anglian Water PLESHEY-FORD END SP R Chelmer 8 25 h 56m -
Anglian Water THAXTED-PARK STREET River Chelmer 11 20 h 54m -
Anglian Water Castle Street/High Street Combined Sewer Overflow Slade 40 18 h 32m -
Anglian Water SAFFRON WALDEN STW Slade River 7 11 h 34m -
Anglian Water WICKEN BONHUNT-SP Wicken Water 2 8 h 45m -
Thames Water Stansted Airport SPS Pincey Brook 1 3 h 52m 209 h
Anglian Water GT DUNMOW STW River Chelmer 4 1 h 50m -
Anglian Water SAFFRON WALDEN STW Slade River 4 1 h 44m -
Anglian Water Castle Street/High Street Combined Sewer Overflow Slade 3 0 h 59m -
Anglian Water LT WALTHAM-CHATHAM GN SP Straw Brook 1 0 h 45m -
Anglian Water SAFFRON WALDEN STW Slade River 1 0 h 23m -
Anglian Water PLESHEY-FORD END SP R Chelmer 0 0 h -
Anglian Water LT WALTHAM-CHATHAM GN SP Straw Brook 0 0 h -
Anglian Water Park Street CSO River Chelmer 0 0 h 1,162 h
Anglian Water SAFFRON WALDEN-VICTORIA THX OV Slade 0 0 h -
Anglian Water Park Street CSO River Chelmer 0 0 h 8,125 h
Anglian Water GREAT CHESTERFORD STW River Cam 0 0 h -
Anglian Water Writtle - Lawford Lane Pumping Station River Wid 0 0 h -
Anglian Water SAFFRON WALDEN STW Slade River 0 0 h -
Thames Water Leaden Roding STW River Roding 0 0 h -
Thames Water Garnetts (Bishops Stortford) SPS Wayletts Ditch 0 0 h 23 h
Anglian Water LT CHESTERFORD-TPS R Cam 0 0 h 1,162 h
Anglian Water SAFFRON WALDEN-GEORGE ABBEY OV Slade River Cam 0 0 h -
Anglian Water Writtle - Lawford Lane Pumping Station River Wid 0 0 h -
Thames Water Garnetts (Bishops Stortford) SPS Wayletts Ditch 0 0 h -
Anglian Water SAFFRON WALDEN-GEORGE ABBEY OV Slade River Cam 0 0 h -
Anglian Water GT DUNMOW STW River Chelmer 0 0 h -
Anglian Water CSO and EO at Springfield-Oak Lodge SP R Chelmer 0 0 h -
Anglian Water GT WALTHAM-HOWE ST SP River Chelmer 0 0 h -
Anglian Water CHELMSFORD-N MLBN CHIGNAL R SP One Bridge Brook 0 0 h -
Anglian Water LT CHESTERFORD-TPS R Cam 0 0 h -
Anglian Water SAFFRON WALDEN-VICTORIA THX OV Slade 0 0 h -
Thames Water Stansted Airport SPS Pincey Brook 0 0 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.

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© Openstreetmap contributors, Contains OS data © Crown copyright and database right 2021-2025,
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