Horsham polluted by sewage 632 times in 2022 - lasting 7,677 hours

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Contains OS Data © Crown copyright & database right 2021-2022
© Top of the Poops 2021-2023
✔ means we have experimental daily data for 2023
Totals for Horsham in 2022
19 Sites polluted by Southern Water, Thames Water
632 sewage dumps
7,677 h duration
That's 10.66 months. On average 1.7 times a day
Live River Pollution Information (Updated 12 minutes ago)
On the map above you can see live river pollution information. Rivers likely to be impacted by sewage pollution are marked in brown. This is based on Thames Water live data API, and modelling by Dr Alex Lipp at Merton College, Oxford. More details on the methodology will be added soon.
Daily Data for 2023
     Monitoring Online      Monitoring Offline      Polluting      Potentially Polluting      Unknown
Daily data is experimental and data is not guaranteed to be accurate. Please inform us of any issue, we will fix.

Pollution Summary 2022

Here are all the reported sewage overflow totals for Horsham in 2022. Sometimes sewage can be being dumped for months at a time.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Southern Water Nuthurst Stream MONKS GATE WWTW 77 1,151 99.1
Southern Water River Ouse BALCOMBE WASTEWATER TREATMENT WORKS 69 955 100
Southern Water River Arun MANNINGS HEATH WWTW 53 829 98.1
Southern Water River Arun SLINFOLD WWTW 62 776 100
Southern Water Lywood Stream ARDINGLY WWTW 44 734 98.8
Southern Water Freshwater River FARHALLS CRESCENT HORSHAM CSO 42 671 100
Southern Water Par Brook BILLINGSHURST WWTW 45 581 100
Southern Water Parsons Brook BARNS GREEN WWTW 43 410 93.7
Southern Water River Arun HORSHAM WWTW 28 329 100
Southern Water Boldings Brook, River Arun WARNHAM WWTW 26 291 99.8
Southern Water River Medway WITHYPITTS PUMPING STATION 40 250 100
Southern Water Freshwater River PARTRIDGE PLACE PUMPING STATION 28 236 100
Southern Water River Arun RUDGWICK RECREATION GROUND CSO 15 100 100
Southern Water River Medway HAZEL WAY PUMPING STATION 15 97 99.2
Thames Water Gatwick Stream Pease Pottage 13 85 76
Southern Water Par Brook LAND ADJ. BILLINGSHURST PUMP. STN 14 71 100
Southern Water Balcombe Lake ST JAMES COTTAGE BALCOMBE CSO 10 69 91.4
Southern Water Lywood Stream River Ouse ARDINGLY WWTW, ARDINGLY 7 32 98.8
Southern Water Horn Brook KERVES LANE HORSHAM WPS 1 0 99.9
Southern Water Felbridge Wtr FERNHILL CLOSE CRAWLEY DOWN 0 0 0
Thames Water Ifield Brook COLGATE WASTEWATER TREATMENT WORKS 0 0 95.4

Data Sources & Accuracy

EDM (Event Duration Monitoring) data and Consented Discharges to Controlled Waters with Conditions from Environment Agency & Data Map Wales

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.