North East Hertfordshire polluted by sewage 224 times in 2022 - lasting 1,880 hours

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Contains OS Data © Crown copyright & database right 2021-2022
© Top of the Poops 2021-2023
✔ means we have experimental daily data for 2023
Totals for North East Hertfordshire in 2022
10 Sites polluted by Anglian Water, Thames Water
224 sewage dumps
1,880 h duration
That's 2.61 months. 4.3 times a week, on average
Live River Pollution Information (Updated 1 hour ago)
On the map above you can see live river pollution information. Rivers likely to be impacted by sewage pollution are marked in brown. This is based on Thames Water live data API, and modelling by Dr Alex Lipp at Merton College, Oxford. More details on the methodology will be added soon.
Daily Data for 2023
     Monitoring Online      Monitoring Offline      Polluting      Potentially Polluting      Unknown
Daily data is experimental and data is not guaranteed to be accurate. Please inform us of any issue, we will fix.

Pollution Summary 2022

Here are all the reported sewage overflow totals for North East Hertfordshire in 2022. Sometimes sewage can be being dumped for months at a time.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Thames Water Cottered Brook COTTERED WASTEWATER TREATMENT WORKS 68 1,010 100
Thames Water Weston WESTON (HERTS) WWTW 47 491 100
Thames Water River Rib THERFIELD WTW 24 150 100
Anglian Water River Rhee ASHWELL WATER RECYCLING CENTRE 24 30 100
Thames Water River Rib BUNTINGFORD WWTW 10 22 100
Anglian Water Fowlmere Stream BARLEY STW 15 16 99.9
Anglian Water Pix Brook LETCHWORTH-NORTON COMMON CSO 13 6 100
Thames Water Rib STANDON WWTW 2 6 99.9
Anglian Water Onto Land BALDOCK PS 1 0 100
Anglian Water Cat Of River Ivel SANDON STW 0 0 100
Anglian Water Pix Brook, River Gt Ouse LETCHWORTH WATER RECYCLING CENTRE 0 0 100
Thames Water Rib Chapmore End 0 0 98.1

Data Sources & Accuracy

EDM (Event Duration Monitoring) data and Consented Discharges to Controlled Waters with Conditions from Environment Agency & Data Map Wales

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.