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Polluted by sewage 335 times in 2025 lasting 3,469 hours
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Donate NowHere are all the reported sewage overflow totals for Brentwood and Ongar in 2025. 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 all the declared CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s appeared to have monitoring enabled for more than 50% of the year
| Company | Waterway | Site | Sewage Dumps | Duration (Hours) | Reporting % |
|---|---|---|---|---|---|
| Thames Water | River Cherwell | WILLINGALE WWTW | 55 | 1,077 | 96.4 |
| Thames Water | Brookhouse Brook | Theydon Bois | 85 | 634 | 100 |
| Thames Water | Brookhouse Brook | EPPING WASTEWATER TREATMENT WORKS | 49 | 603 | 99.9 |
| Thames Water | Northweald Brook | NORTH WEALD STW, NORTH WEALD, ESSEX | 46 | 473 | 100 |
| Thames Water | River Ingrebourne | BRENTWOOD (NAGS HEAD LANE) WWTW | 17 | 192 | 96.8 |
| Anglian Water | River Wid | SHENFIELD STW NO 2 PS | 32 | 170 | 100 |
| Anglian Water | River Wid | INGATESTONE WATER RECYCLING CENTRE | 20 | 128 | 100 |
| Anglian Water | R Wid | SO AT SHENFIELD SEWER | 11 | 61 | 92 |
| Thames Water | Cripsey Brook | Wealdbridge, North Weald | 8 | 60 | 98.2 |
| Thames Water | Colville Hall Brook | HULL GREEN (MATCHING) SPS | 3 | 42 | 97.5 |
| Anglian Water | River Wid | DODDINGHURST WRC | 2 | 9 | 100 |
| Anglian Water | Mardyke Thames Estuary | WARLEY WEST PS | 3 | 7 | 100 |
| Anglian Water | Haveringsgrove Brook | INGRAVE PUMPING STATION | 1 | 4 | 100 |
| Anglian Water | River Wid | DODDINGHURST STW | 3 | 3 | 99.8 |
| Anglian Water | River Wid | B'MORE THE GREEN INGATESTONE RD PS | 0 | 0 | 100 |
| Anglian Water | River Wid | SHENFIELD AND HUTTON WRC | 0 | 0 | 100 |
| Anglian Water | Mardyke W Thames Est | WARLEY EAST PS | 0 | 0 | 100 |
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.
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Get in touch if you have queries or want to discuss our data.
press [at] top-of-the-poops.org