It's a Dirty Business

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North West Essex - Live Sewage

Polluted by sewage 2,455 hours in 2026 , monitoring offline 2,953 hours so far..

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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 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 North West Essex

Daily Data

Jan - 1,129 hours , 1,488 offline
Feb - 1,286 hours , 1,344 offline
Mar - 39 hours , 121 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
Thames Water Stansted Mountfitchet STW River Stort 54 981 h 45m -
Anglian Water GREAT EASTON STW (ESSEX) River Chelmer 48 774 h 52m -
Anglian Water GREAT DUNMOW STW River Chelmer 27 292 h 51m -
Anglian Water GT EASTON-BRIDGEFOOT TPS River Chelmer 23 291 h 59m -
Anglian Water THAXTED-PARK STREET River Chelmer 14 42 h 30m -
Anglian Water WICKEN BONHUNT-SP Wicken Water 6 28 h 45m -
Thames Water Leaden Roding STW River Roding 6 22 h 15m -
Anglian Water CHELMSFORD-N MLBN CHIGNAL R SP One Bridge Brook 1 12 h 29m -
Anglian Water Castle Street/High Street Combined Sewer Overflow Slade 8 5 h 22m -
Anglian Water SAFFRON WALDEN STW Slade River 4 2 h 17m -
Anglian Water LT WALTHAM-CHATHAM GN SP Straw Brook 1 0 h 45m -
Thames Water Garnetts (Bishops Stortford) SPS Wayletts Ditch 0 0 h -
Anglian Water WICKEN BONHUNT-SP Wicken Water 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 Writtle - Lawford Lane Pumping Station River Wid 0 0 h -
Thames Water Stansted Airport SPS Pincey Brook 0 0 h -
Anglian Water GREAT DUNMOW STW River Chelmer 0 0 h -
Anglian Water PLESHEY-FORD END SP R Chelmer 0 0 h -
Anglian Water Castle Street/High Street Combined Sewer Overflow Slade 0 0 h -
Thames Water Leaden Roding STW River Roding 0 0 h -
Anglian Water Park Street CSO River Chelmer 0 0 h 1,476 h
Thames Water Stansted Mountfitchet STW River Stort 0 0 h -
Anglian Water SAFFRON WALDEN STW Slade River 0 0 h -
Anglian Water SAFFRON WALDEN STW Slade River 0 0 h -
Anglian Water CSO and EO at Springfield-Oak Lodge SP R Chelmer 0 0 h -
Thames Water Garnetts (Bishops Stortford) SPS Wayletts Ditch 0 0 h -
Anglian Water LT CHESTERFORD-TPS R Cam 0 0 h -
Anglian Water GT WALTHAM-HOWE ST SP River Chelmer 0 0 h -
Anglian Water SAFFRON WALDEN-VICTORIA THX OV Slade 0 0 h -
Anglian Water LT WALTHAM-CHATHAM GN SP Straw Brook 0 0 h -
Anglian Water GT EASTON-BRIDGEFOOT TPS River Chelmer 0 0 h -
Anglian Water SAFFRON WALDEN-VICTORIA THX OV Slade 0 0 h -
Anglian Water LT CHESTERFORD-TPS R Cam 0 0 h 1,476 h
Thames Water Stansted Airport SPS Pincey Brook 0 0 h -
Anglian Water GREAT CHESTERFORD STW River Cam 0 0 h -
Anglian Water Park Street CSO River Chelmer 0 0 h -
Anglian Water SAFFRON WALDEN STW Slade River 0 0 h -
Anglian Water GREAT EASTON STW (ESSEX) River Chelmer 0 0 h -
Anglian Water SAFFRON WALDEN-GEORGE ABBEY OV Slade River Cam 0 0 h -
Anglian Water GREAT CHESTERFORD STW River Cam 0 0 h -
Anglian Water GT DUNMOW STW River Chelmer 0 0 h -
Anglian Water Writtle - Lawford Lane Pumping Station River Wid 0 0 h -
Anglian Water PLESHEY-FORD END SP R Chelmer 0 0 h -
Anglian Water THAXTED-PARK STREET River Chelmer 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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Analysing sewage pollution by the Water Industry

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© 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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