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Bognor Regis and Littlehampton - 2025 Sewage

Polluted by sewage 1,332 hours in 2025

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

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View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in Bognor Regis and Littlehampton for 2025. It is an estimate, based on very poor quality live data from the Water Companies. This may not align with the 'official' reported sewage values from the water companies, which is reported in April following then end of the year - so 2025 numbers are reported in April 2026.

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 Bognor Regis and Littlehampton

Daily Data

Jan - 415 hours
Feb - 175 hours
Mar - 26 hours
Apr - 7 hours
May - 1 hours
Jun - 2 hours
Jul - 15 hours
Aug - 25 hours
Sept - 36 hours
Oct - 349 hours
Nov - 55 hours
Dec - 220 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 SEA ROAD LITTLEHAMPTON CEO - 109368 Controlled Sea 62 536 h 45m -
Southern Water EAST STREET LITTLEHAMPTON CSO - 108004 Tidal River Arun 25 199 h 31m -
Southern Water SOUTH TERRACE LITTLEHAMPTON CSO - 109390 Tidal River Arun 18 174 h 59m -
Southern Water SEA ROAD LITTLEHAMPTON CEO - 109368 Controlled Sea 20 166 h 53m -
Southern Water WEST PARK BOGNOR REGIS CEO - 108160 Controlled Sea 32 96 h 11m -
Southern Water WEST PARK BOGNOR REGIS CEO - 108160 Controlled Sea 12 35 h 14m -
Southern Water BOGNOR MAIN CEO - 107412 To Aldingbourne Rife 4 29 h 34m -
Southern Water SHRIPNEY ROAD SOUTH BERSTED CEO - 107408 Freshwater River 4 23 h 1m -
Southern Water EAST STREET LITTLEHAMPTON CSO - 108004 Tidal River Arun 7 21 h 40m -
Southern Water SOUTH TERRACE LITTLEHAMPTON CSO - 109390 Tidal River Arun 4 20 h 50m -
Southern Water CARLTON AVENUE BOGNOR CSO - 102492 Controlled Sea English Channel 2 15 h 15m -
Southern Water BOGNOR MAIN CEO - 107412 To Aldingbourne Rife 2 7 h 4m -
Southern Water GLOUCESTER ROAD BOGNOR CSO - 103299 Freshwater River 2 2 h 29m -
Southern Water ALDWICK AVENUE BOGNOR CSO - 103303 Controlled Sea 1 1 h 19m -
Southern Water HOBBS COTTAGE CLIMPING CEO - 108034 Ryebank Rife Via Surface Sewer 1 1 h 4m -
Southern Water HOBBS COTTAGE CLIMPING CEO - 108034 Ryebank Rife Via Surface Sewer 2 0 h 45m -
Southern Water GLOUCESTER ROAD BOGNOR CSO - 103299 Freshwater River 0 0 h -
Southern Water VICTORIA ROAD BOGNOR CSO - 103300 Controlled Sea 0 0 h -
Southern Water ALDWICK AVENUE BOGNOR CSO - 103303 Controlled Sea 0 0 h -
Southern Water CARLTON AVENUE BOGNOR CSO - 102492 Controlled Sea English Channel 0 0 h -
Southern Water ANCTON LANE MIDDLETON ON SEA CSO - 108032 Ryebank Rife/River Arun 0 0 h -

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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© Openstreetmap contributors, Contains OS data © Crown copyright and database right 2021-2025,
Contains Water UK National Storm Overflow Hub Data CC-BY-SA 4.0 and analysis © 2025 Top-Of-The-Poops

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