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Polluted by sewage 130 times in 2024 lasting 1,188 hours
So far this year (as of May 8, 2025, 8:30 PM) there has been 543 hours of sewage overflows
Your local MP is Zöe Franklin (Liberal Democrat) - 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 Guildford, 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 Guildford 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 % |
|---|---|---|---|---|---|
| Thames Water | Wey | GUILDFORD STW | 46 | 554 | 97.1 |
| Thames Water | River Wey/Ockham Mill Stream | RIPLEY WASTEWATER TREATMENT WORKS | 43 | 380 | 99.6 |
| Thames Water | Blackwater | SWS, SOUTH LANE, ASH, SURREY | 36 | 244 | 99.4 |
| Thames Water | Culverted Ockham Brook | OCKHAM ROAD SOUTH CSO | 4 | 9 | 100 |
| Thames Water | River Wey | CSO AT MARKENFIELD ROAD | 1 | 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