Portsmouth North - Live Sewage

Polluted by sewage 340 hours in 2026 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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View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in Portsmouth North 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.

Totals for Portsmouth North in 2026

Sewage340 hours
Monitoring offline0 hours
Potential pollution0 hours
Storm overflows24

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Daily Data

Jan - 122 hours
Feb - 125 hours
Mar - 2 hours
Apr - 12 hours
May - 2 hours
Jun - 0 hours
Jul - 0 hours
Aug - 10 hours
Sept - 9 hours
Oct - 56 hours
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Southern Water COURT LANE COSHAM SSO - 115958 Ports Creek 14 100h 13m -
Southern Water GLADYS AVENUE PORTSMOUTH CSO - 108434 Portsmouth Harbour 31 96h 1m -
Southern Water NORTH END AVENUE PORTSMOUTH CSO - 108773 Portsmouth Harbour 24 68h 48m -
Southern Water WIDLEY ROAD PORTSMOUTH CSO - 108772 Portsmouth Harbour 7 21h 41m -
Southern Water MILE END ROAD PORTSMOUTH NO X CSO - 108459 Portsmouth Harbour 13 19h 22m -
Southern Water MAINLAND DRAYTON SSO - 115960 Ports Creek 4 15h 50m -
Southern Water KIRTLEY CLOSE DRAYTON CSO - 108774 Langstone Harbour 5 8h 52m -
Southern Water NEWCOMEN ROAD PORTSMOUTH CSO - 108460 Portsmouth Harbour 3 4h 38m -
Southern Water STAMSHAW ROAD PORTSMOUTH CSO - 109337 Portsmouth Harbour 3 2h 22m -
Southern Water Unknown Unknown 1 1h 53m -
Southern Water MILE END ROAD PORTSMOUTH NO 1 CSO - 108415 Portsmouth Harbour 1 0h 56m -
Southern Water MILE END ROAD PORTSMOUTH NO X CSO - 108459 Portsmouth Harbour 0 0h -
Southern Water NEWCOMEN ROAD PORTSMOUTH CSO - 108460 Portsmouth Harbour 0 0h -
Southern Water WINSTANLEY ROAD PORTSMOUTH CSO - 108504 Portsmouth Harbour 0 0h -
Southern Water WIDLEY ROAD PORTSMOUTH CSO - 108772 Portsmouth Harbour 0 0h -
Southern Water GLADYS AVENUE PORTSMOUTH CSO - 108434 Portsmouth Harbour 0 0h -
Southern Water COURT LANE COSHAM SSO - 115958 Ports Creek 0 0h -
Southern Water STAMSHAW ROAD PORTSMOUTH CSO - 109337 Portsmouth Harbour 0 0h -
Southern Water MILE END ROAD PORTSMOUTH NO 1 CSO - 108415 Portsmouth Harbour 0 0h -
Southern Water ST ANDREWS ROAD PORTSMOUTH CSO - 108474 Broom Channel 0 0h -
Southern Water WINSTANLEY ROAD PORTSMOUTH CSO - 108504 Portsmouth Harbour 0 0h -
Southern Water ST ANDREWS ROAD PORTSMOUTH CSO - 108474 Broom Channel 0 0h -
Southern Water MAINLAND DRAYTON SSO - 115960 Ports Creek 0 0h -
Southern Water NORTH END AVENUE PORTSMOUTH CSO - 108773 Portsmouth Harbour 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

Annual figures up to and including 2025 come from official water company returns. The 2026 figure is our own estimate, derived continuously from the companies' live data feeds.

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.