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Polluted by sewage 133 times in 2025 lasting 1,099 hours
Monitoring fell below 50% in some locations so could be more
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Donate NowHere are all the reported sewage overflow totals for Hilden Park in 2025. 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 place 1 of the total 7 CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway locations had reporting enabled for less than half the year.
| Company | Waterway | Site | Sewage Dumps | Duration (Hours) | Reporting % |
|---|---|---|---|---|---|
| Southern Water | Hilden Brook | COLDHARBOUR LANE PUMPING STATION | 44 | 520 | 99.9 |
| Southern Water | Hilden Brook | COLDHARBOUR LANE CSO | 19 | 232 | 85.7 |
| Southern Water | River Medway | CANNON LANE COMBINED SEWER OVERFLOW | 40 | 194 | 100 |
| Southern Water | River Medway | HILDEN PARK PUMPING STATION | 19 | 73 | 100 |
| Southern Water | Hilden Brook | HILDEN BRIDGE PUMPING STATION | 7 | 61 | 100 |
| Southern Water | Hilden Brook | HAWDEN ROAD TONBRIDGE CSO | 4 | 16 | 18.9 |
| Southern Water | River Medway | LEIGH ROAD HILDENBOROUGH CSO | 0 | 0 | 75.6 |
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.
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Get in touch if you have queries or want to discuss our data.
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