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Polluted by sewage 1,924 times in 2024 lasting 27,935 hours - That's 3.23 years!
So far this year (as of May 7, 2025, 8:00 PM) there has been 11,945 hours of sewage overflows - that's 1.38 years!
Your local MP is John Glen (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 Salisbury, 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 Salisbury 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 | River Bourne | HURDCOTT WASTEWATER TREATMENT WORKS | 310 | 6,466 | 100 |
| Wessex Water | River Nadder | BARFORD ST MARTIN WRC | 185 | 3,573 | 100 |
| Southern Water | River Blackwater | REDLYNCH WWTW | 138 | 2,660 | 99.4 |
| Wessex Water | River Bourne | ALLINGTON OLD INN PS | 126 | 2,649 | 99.9 |
| Wessex Water | River Avon | SALISBURY (PETERSFINGER) | 123 | 2,563 | 100 |
| Southern Water | Groundwater/River Dun | EAST GRIMSTEAD WWTW | 156 | 2,536 | 99.8 |
| Wessex Water | Fovant Brook | FOVANT WATER RECYCLING CENTRE | 193 | 2,532 | 100 |
| Wessex Water | Groundwater Via Infilt System | HINDON WASTEWATER TREATMENT WORKS | 129 | 1,139 | 99.9 |
| Wessex Water | Hampshire Avon, River | DOWNTON SEWAGE TREATMENT WORKS | 99 | 988 | 99.7 |
| Wessex Water | River Wylye Via A Reed Bed | HANGING LANGFORD PUMPING STATION | 191 | 826 | 100 |
| Wessex Water | River Bourne | HURDCOTT PS | 26 | 498 | 99.2 |
| Wessex Water | Ditch | CHILMARK PUMPING STATION | 27 | 443 | 99.5 |
| Wessex Water | River Nadder | HINDON PUMPING STATION | 41 | 440 | 100 |
| Wessex Water | River Nadder | BARFORD ST MARTIN PUMPING STATION | 23 | 295 | 99.9 |
| Wessex Water | River Nadder Via Sws | TISBURY COMBINED SEWER OVERFLOW | 56 | 153 | 100 |
| Wessex Water | River Avon Via Sw Sewer | HIGH STREET SSO | 30 | 87 | 99.4 |
| Wessex Water | River Sem | SEMLEY WATER RECYCLING CENTRE | 24 | 53 | 100 |
| Wessex Water | River Avon Via Sws | 37 ENDLESS STREET CSO | 42 | 26 | 99.8 |
| Wessex Water | River Bourne | IDMISTON PUMPING STATION | 2 | 0 | 99.9 |
| Wessex Water | River Avon Via Sws | COLLEGE STREET CSO | 3 | 0 | 85.4 |
| Southern Water | River Blackwater | WHITEPARISH WWTW | 0 | 0 | 100 |
| Wessex Water | River Avon | CHURCHILL GDNS SSO | 0 | 0 | 99.3 |
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