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Horsham - Live Sewage

Polluted by sewage 7,625 hours in 2026 , monitoring offline 867 hours so far..

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Contains OS Data © Crown copyright & database right 2021-2024
© Top of the Poops 2021-2024

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✔ means we have live data (𝑥 if not)

View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in Horsham so far for 2026. It is an estimate, based on very poor quality live data from the Water Companies. The water companies report their sewage to the Environment Agency every year in April. You can see the last reported year in the other page

What's a potential overflow? If the CSO goes 'Offline' while its Overflowing, we don't know if it stopped overflowing until we get a 'Stop' event.

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Constituencies near Horsham

Daily Data

Jan - 4,059 hours
Feb - 3,204 hours
Mar - 323 hours
Apr - 38 hours , 350 offline
May - 0 hours , 517 offline
Jun - 0 hours
Jul - 0 hours
Daily data is experimental and data is not guaranteed to be accurate. Please inform us of any issue, we will fix.
Please note: We don't have rainfall data for Wales. If you know where to source it please let us know!
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Southern Water MONKS GATE SSO - 115805 Nuthurst Stream 71 1,420h 18m -
Southern Water MANNINGS HEATH SSO - 115739 River Arun 59 1,306h 59m -
Southern Water PARTRIDGE GREEN SSO - 115766 River Adur 43 837h 14m 769 h
Southern Water BARNS GREEN SSO - 115748 Parsons Brook 41 825h 56m -
Southern Water COWFOLD SSO - 115726 Cowfold Stream River Adur 40 749h 21m -
Southern Water SLINFOLD SSO - 116044 River Arun 36 538h 41m -
Southern Water BILLINGSHURST SSO - 115764 Par Brook 33 519h 54m -
Southern Water HORSHAM NEW SSO - 115826 River Arun 26 413h 27m -
Southern Water WARNHAM SSO - 115747 Boldings Brook, River Arun 28 410h 27m -
Southern Water FARHALLS CRESCENT HORSHAM CSO - 102550 Freshwater River 14 316h 43m -
Southern Water RUDGWICK RECREATION GROUND CSO - 108268 River Arun 14 108h 41m -
Southern Water KERVES LANE HORSHAM CSO - 108321 Horn Brook 11 82h 9m 98 h
Thames Water Rusper SPS Baldhorns Brook 16 62h -
Southern Water STANE STREET BILLINGSHURST CEO - 108189 Par Brook 4 28h 2m -
Southern Water COWFOLD CEO - 115981 Cowfold Stream River Adur 1 5h 42m -
Southern Water STANE STREET BILLINGSHURST CEO - 108189 Par Brook 0 0h -
Southern Water MANNINGS HEATH SSO - 115739 River Arun 0 0h -
Southern Water KERVES LANE HORSHAM CSO - 108321 Horn Brook 0 0h -
Southern Water BILLINGSHURST SSO - 115764 Par Brook 0 0h -
Southern Water PARTRIDGE GREEN SSO - 115766 River Adur 0 0h -
Southern Water FARHALLS CRESCENT HORSHAM CSO - 102550 Freshwater River 0 0h -
Southern Water BARNS GREEN SSO - 115748 Parsons Brook 0 0h -
Thames Water Rusper SPS Baldhorns Brook 0 0h -
Thames Water Colgate STW Ifield Brook 0 0h -
Southern Water MONKS GATE SSO - 115805 Nuthurst Stream 0 0h -
Southern Water SLINFOLD SSO - 116044 River Arun 0 0h -
Southern Water HORSHAM NEW SSO - 115826 River Arun 0 0h -
Southern Water COWFOLD SSO - 115726 Cowfold Stream River Adur 0 0h -
Southern Water WARNHAM SSO - 115747 Boldings Brook, River Arun 0 0h -
Southern Water RUDGWICK RECREATION GROUND CSO - 108268 River Arun 0 0h -

Data Sources & Accuracy

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.

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