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Polluted by sewage 3,897 hours in 2025
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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 East Surrey, 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 Now| Company | Site Name | Receiving Waterway | Overflow Days | Total Duration (hours) | Total Duration (days) |
|---|---|---|---|---|---|
| Thames Water | Burstow STW | Burstow Stream | 56 | 788 h 30m | 32.83 |
| Southern Water | GODSTONE SSO - 115799 | Gibbs Brook | 33 | 498 h 42m | 20.75 |
| Southern Water | OXTED SSO - 115423 | River Eden | 39 | 361 h 16m | 15.04 |
| Thames Water | Burstow STW | Burstow Stream | 21 | 336 h 45m | 14 |
| Southern Water | FELBRIDGE CSO - 116038 | Felbridge Water | 40 | 299 h 24m | 12.46 |
| Southern Water | LINGFIELD SSO - 115415 | Ray Brook | 31 | 290 h 8m | 12.08 |
| Southern Water | EDEN VALE EAST GRINSTEAD SSO - 115912 | Eden Vale Stream | 17 | 228 h 56m | 9.5 |
| Southern Water | FELBRIDGE CSO - 116038 | Felbridge Water | 17 | 137 h 4m | 5.71 |
| Southern Water | FURZEFIELD ROAD BALDWINS HILL CEO - 108578 | River Medway | 20 | 128 h 13m | 5.33 |
| Southern Water | OXTED SSO - 115423 | River Eden | 14 | 125 h 30m | 5.21 |
| Southern Water | GODSTONE SSO - 115799 | Gibbs Brook | 7 | 120 h 35m | 5 |
| Thames Water | Merstham STW | Redhill Brook | 10 | 114 h | 4.75 |
| Southern Water | EDEN VALE EAST GRINSTEAD SSO - 115912 | Eden Vale Stream | 8 | 111 h 14m | 4.62 |
| Thames Water | Merstham STW | Redhill Brook | 5 | 92 h 15m | 3.83 |
| Southern Water | LINGFIELD SSO - 115415 | Ray Brook | 10 | 69 h 56m | 2.88 |
| Southern Water | COPTHORNE ROAD DOMEWOOD CEO - 107391 | Freshwater River | 9 | 61 h 43m | 2.54 |
| Southern Water | OXTED CSO - 115422 | River Eden | 20 | 42 h 52m | 1.75 |
| Southern Water | Unknown | Unknown | 5 | 37 h 3m | 1.54 |
| Southern Water | COPTHORNE ROAD DOMEWOOD CEO - 107391 | Freshwater River | 3 | 24 h 30m | 1 |
| Southern Water | OXTED CSO - 115422 | River Eden | 3 | 12 h 4m | 0.5 |
| Southern Water | FURZEFIELD ROAD BALDWINS HILL CEO - 108578 | River Medway | 4 | 11 h 58m | 0.46 |
| Southern Water | LINGFIELD HOSPITAL SCHOOL CEO - 108670 | River Eden | 1 | 4 h 24m | 0.17 |
| Southern Water | Unknown | Unknown | 0 | 0 h | 0 |
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.
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