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Portsmouth North was polluted by sewage 193 times in 2023
lasting 404 hours

© OpenStreetMap contributors
Contains OS Data © Crown copyright & database right 2021-2023
© Top of the Poops 2021-2023
✔ means we have experimental daily data since 2023
Totals for Portsmouth North in 2023
9 Sites polluted by Southern Water
193 sewage dumps
404 h duration
That's 16.83 days. 3.7 times a week, on average
Change Over Time
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Pollution Summary 2023

Here are all the reported sewage overflow totals for Portsmouth North in 2023. 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 0 of the total 10 CSO locations had reporting enabled for less than half the year, of which 0 had zero reporting.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Southern Water Portsmouth Harbour GRUNEISON ROAD STORM PS 63 136 61.73
Southern Water Portsmouth Harbour NORTH END AVENUE PORTSMOUTH CSO 57 120 99.9
Southern Water Ports Creek COSHAM PS 17 68 99.9
Southern Water Ports Creek MAINLAND PS 23 47 99.9
Southern Water Langstone Harbour KIRTLEY CLOSE DRAYTON CSO 10 14 100
Southern Water Portsmouth Harbour MILE END ROAD CSO 10 9 99
Southern Water Portsmouth Harbour WIDLEY ROAD PORTSMOUTH CSO 10 7 99.1
Southern Water Portsmouth Harbour COMMERCIAL ROAD/RUDMORE ROAD CSO 1 0 99
Southern Water Broom Channel ST ANDREWS ROAD PORTSMOUTH CSO 2 0 100
Southern Water Great Salterns Lake BURRFIELDS ROAD PORTSMOUTH CSO 0 0 100

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. 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.