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Polluted by sewage 773 times in 2024 lasting 8,695 hours - That's 1.01 years!
So far this year (as of Apr 30, 2025, 9:15 AM) there has been 3,108 hours of sewage overflows - that's 0.36 years!
Your local MP is John Milne (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 Horsham, 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 Horsham 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 Arun | MANNINGS HEATH WWTW | 131 | 1,602 | 94.6 |
| Southern Water | River Adur | PARTRIDGE GREEN S.T.W. | 100 | 1,327 | 99.6 |
| Southern Water | River Arun | SLINFOLD WWTW | 104 | 1,189 | 99.9 |
| Southern Water | Nuthurst Stream | MONKS GATE WWTW | 92 | 1,123 | 99.1 |
| Southern Water | Cowfold Stream River Adur | COWFOLD WWTW | 73 | 957 | 99.9 |
| Southern Water | Par Brook | BILLINGSHURST WWTW | 61 | 664 | 100 |
| Southern Water | River Arun | HORSHAM WWTW | 45 | 625 | 98.9 |
| Southern Water | Parsons Brook | BARNS GREEN WWTW | 60 | 502 | 98.8 |
| Southern Water | Boldings Brook, River Arun | WARNHAM WWTW | 41 | 383 | 95.2 |
| Southern Water | River Arun | RUDGWICK RECREATION GROUND CSO | 20 | 117 | 99.7 |
| Southern Water | Par Brook | LAND ADJ. BILLINGSHURST PUMP. STN | 15 | 87 | 100 |
| Southern Water | Horn Brook | KERVES LANE HORSHAM WPS | 17 | 66 | 100 |
| Southern Water | Freshwater River | FARHALLS CRESCENT HORSHAM CSO | 14 | 48 | 99.8 |
| Thames Water | Ifield Brook | COLGATE WASTEWATER TREATMENT WORKS | 0 | 0 | 98.7 |
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