North East Hertfordshire was polluted by sewage 381 times in 2023
lasting 4,429 hours

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Contains OS Data © Crown copyright & database right 2021-2023
© Top of the Poops 2021-2023
✔ means we have experimental daily data since 2023
Totals for North East Hertfordshire in 2023
11 Sites polluted by Anglian Water, Thames Water
381 sewage dumps
4,429 h duration
That's 6.15 months. On average 1 times a day
Change Over Time
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Daily Data Since 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 2023

Here are all the reported sewage overflow totals for North East Hertfordshire in 2023. Sometimes sewage can be being dumped for months at a time.

Reporting refers to how much of the time the monitoring was active. In this constituency 0 of the total 13 CSO locations had reporting enabled for less than half the year, of which 0 had zero reporting.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Thames Water Cottered Brook COTTERED WASTEWATER TREATMENT WORKS 114 2,222 77.5
Thames Water River Beane WESTON (HERTS) WWTW 73 959 99.8
Thames Water River Quin BARKWAY WASTEWATER TREATMENT WORKS 44 627 99.5
Thames Water River Rib THERFIELD WTW 32 244 99.7
Anglian Water River Rhee ASHWELL WATER RECYCLING CENTRE 24 165 100
Thames Water Rib Chapmore End 31 80 99.7
Thames Water River Rib BUNTINGFORD WWTW 16 51 100
Anglian Water Fowlmere Stream BARLEY STW 34 40 100
Thames Water Rib STANDON WWTW 4 16 98.9
Anglian Water Onto Land BALDOCK PS 3 14 100
Anglian Water Pix Brook LETCHWORTH-NORTON COMMON CSO 6 8 100
Anglian Water Pix Brook, River Gt Ouse LETCHWORTH WATER RECYCLING CENTRE 0 0 100
Anglian Water Cat Of River Ivel SANDON STW 0 0 100

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. 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.