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

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Constituency

✔ 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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Constituencies near Portsmouth North

Waterways in Portsmouth North

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.

Analysing sewage pollution by the Water Industry

With generous support from:

Media Queries

Get in touch if you have queries or want to discuss our data.

press [at] top-of-the-poops.org

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