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Polluted by sewage 792 times in 2024 lasting 5,261 hours
So far this year (as of May 29, 2025, 1:45 AM) there has been 1,943 hours of sewage overflows
Your local MP is Andrew Murrison (Conservative) - Find out more about their interests, donors, and voting at They Work For You
We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for South West Wiltshire, here you can see overflows in red, the darker the red, the more the CSO overflowed that day.
Each CSO has a row, the most recent data is on the right hand side.
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Donate NowHere are all the reported sewage overflow totals for South West Wiltshire in 2024. 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 CSOs appeared to have monitoring enabled for more than 50% of the year
| Company | Waterway | Site | Sewage Dumps | Duration (Hours) | Reporting % |
|---|---|---|---|---|---|
| Wessex Water | Shreen Water | MERE WATER RECYCLING CENTRE | 95 | 958 | 99.9 |
| Wessex Water | Shreen Water | CLEMENTS LANE COMBINED SEWER OF | 59 | 652 | 90.8 |
| Wessex Water | Fairbourne Stream | DILTON MARSH STW | 65 | 631 | 100 |
| Wessex Water | Bitham Brook/ Bitham Brook | WESTBURY WATER RECYCLING CENTRE | 80 | 589 | 99.95 |
| Wessex Water | River Wylye | WARMINSTER WWTW | 33 | 381 | 100 |
| Wessex Water | Buckington Drove | TINHEAD | 48 | 381 | 100 |
| Wessex Water | River Biss Via Sws | LADYDOWN MILL COMBINED SEWER OF | 41 | 295 | 99.5 |
| Wessex Water | F/E-River Avon, Cso-River Biss | TROWBRIDGE WASTEWATER TRTMNT WORKS | 31 | 281 | 99.9 |
| Wessex Water | Lambrok Stream | CHANTRY GARDENS PS | 36 | 240 | 99.9 |
| Wessex Water | Were Via Sws | CALVESWATER PUMPING STATION | 54 | 224 | 100 |
| Wessex Water | Rodden Brook | DIVERS BRIDGE PUMPING STATION | 16 | 151 | 99.9 |
| Wessex Water | Shreen Water | MERE COMBINED SEWER OVERFLOW | 63 | 138 | 100 |
| Wessex Water | River Wyle Via Were | LAKE PLEASURE GARDENS CSO | 66 | 114 | 100 |
| Wessex Water | Bitham Brook | BRATTON-TROWBRIDGE ROAD PS | 28 | 107 | 100 |
| Wessex Water | Allebourne Brook | DILTON MARSH CSO | 25 | 60 | 99.6 |
| Wessex Water | River Biss Via Sws | STALLARD STREET CSO | 4 | 21 | 99.2 |
| Wessex Water | Biss Brook | PENN KNAPP PS | 5 | 18 | 100 |
| Wessex Water | Groundwater Via Infilt System | MAIDEN BRADLEY WWTW | 2 | 3 | 99.7 |
| Wessex Water | River Frome | MAIDEN BRADLEY CSO | 18 | 2 | 62.4 |
| Wessex Water | Were | GEORGE STREET CSO | 8 | 2 | 99.9 |
| Wessex Water | Biss Brook | CHURCHLANDS PUMPING STATION | 1 | 1 | 98.9 |
| Wessex Water | Shreen Water | HAZZARDS HILL CSO | 5 | 1 | 99.1 |
| Wessex Water | Shreen Water | TALBOT COTTAGE CSO | 3 | 0 | 87.8 |
| Wessex Water | Bitham Brook | ALFRED STREET CSO | 3 | 0 | 99.5 |
| Wessex Water | Bitham Brook Via Sws | WEST END COMBINED SEWER OVERFLOW | 2 | 0 | 99.5 |
| Wessex Water | River Biss | 6 WICKER HILL CSO | 1 | 0 | 96.3 |
| Wessex Water | River Biss Via Sws | SHIRES CAR PARK CSO | 0 | 0 | 98.9 |
| Wessex Water | Paxcroft Brook Via Sws | POLEBARN ROAD CSO | 0 | 0 | 92.1 |
| Wessex Water | River Wylye | MONKTON DEVERILL WRC | 0 | 0 | 95.2 |
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.
Get in touch if you have queries or want to discuss our data.
press [at] top-of-the-poops.org