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Polluted by sewage 404 times in 2024 lasting 4,383 hours
So far this year (as of Apr 30, 2025, 6:45 AM) there has been 1,015 hours of sewage overflows
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We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for Fareham and Waterlooville, 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 Fareham and Waterlooville 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 % |
|---|---|---|---|---|---|
| Southern Water | River Meon | WICKHAM WWTW | 105 | 1,955 | 98.9 |
| Southern Water | River Meon | FAREHAM ROAD WICKHAM CEO | 70 | 877 | 100 |
| Southern Water | Wallington River | HIGH STREET FAREHAM CSO | 85 | 847 | 100 |
| Southern Water | River Wallington | SOUTHWICK WWTW | 35 | 398 | 98.8 |
| Southern Water | Hoeford Lake | HOEFORD FAREHAM CEO | 25 | 96 | 99.8 |
| Southern Water | Blackbrook Stream | THE GILLIES FAREHAM CSO | 8 | 33 | 99.5 |
| Southern Water | Black Brook | ELMHURST ROAD (COMPASS POINT) CSO | 21 | 32 | 100 |
| Southern Water | River Wallington | NEWMANS BRIDGE SOUTHWICK CEO | 3 | 29 | 99.6 |
| Southern Water | Potwell | HAMBLETON ROAD WATERLOOVILLE CSO | 6 | 25 | 99.8 |
| Southern Water | River Wallington | WICKHAM ROAD FAREHAM WPS CSO | 7 | 19 | 99.6 |
| Southern Water | Black Brook | STORM OVERFLOW AT ARUNDEL DRIVE | 9 | 16 | 99.7 |
| Southern Water | Fareham Creek/Portsmouth Hbr | QUAY STREET, FAREHAM CSO | 11 | 15 | 66.3 |
| Southern Water | Portsmouth Harbour | WICOR MILL LANE PORTCHESTER CEO | 6 | 11 | 99.6 |
| Southern Water | Fareham Creek/Portsmouth Hbr | BRIDGEFOOT PUMPING STATION | 6 | 8 | 99.8 |
| Southern Water | Black Brook | REDLANDS LANE FAREHAM CSO | 3 | 6 | 99.5 |
| Southern Water | Portsmouth Harbour | SALTERNS LANE FAREHAM CEO | 1 | 3 | 99.6 |
| Southern Water | Portsmouth Harbour | SALTERNS LANE FAREHAM O/S 12 CSO | 1 | 2 | 99.9 |
| Southern Water | Portsmouth Harbour | COW LANE PORTCHESTER CEO | 1 | 0 | 99.7 |
| Southern Water | River Wallington | RAMBLERS WAY WATERLOOVILLE CEO | 1 | 0 | 99.8 |
| Southern Water | Sheepwash | HAMBLEDON PS | 0 | 0 | 99.8 |
| Southern Water | Hoeford Stream | COTSWOLD WALK CSO | 0 | 0 | 100 |
| Southern Water | Fareham Creek/Portsmouth Hbr | CAMS HILL, FAREHAM CSO | 0 | 0 | 99.9 |
| Southern Water | River Wallington | WALLINGTON HILL CSO | 0 | 0 | 99.7 |
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