Avonmouth

Polluted by sewage 418 times in 2025 lasting 2,033 hours

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Totals for Avonmouth in 2025

17 Sites polluted by Wessex Water

418 sewage dumps

2,033 hours duration

Sewage pollution map of Avonmouth — Sewage pollution map of Avonmouth: 2,033 hours in 2025

That's 2.82 months. On average 1.1 times a day

Change Over Time

Constituency for Avonmouth

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Waterways in Avonmouth

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Pollution Summary 2025

Here are all the reported sewage overflow totals for Avonmouth in 2025. 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 place all the declared CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s appeared to have monitoring enabled for more than 50% of the year

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Wessex Water	Severn Estuary	AVONMOUTH STW	67	865	100
Wessex Water	Unknown	PORTBURY WHARF STW	83	721	100
Wessex Water	River Avon	WEST TOWN ROAD PUMPING STATION	55	131	100
Wessex Water	River Avon	WEST TOWN ROAD PUMPING STATION	14	65	100
Wessex Water	River Avon	AVON ROAD PUMPING STATION	26	64	100
Wessex Water	River Avon Via Sws	LOWER HIGH STREET CSO	13	59	98.5
Wessex Water	River Avon Via Sws	PORTWAY COMBINED SEWER OVERFLOW	47	44	100
Wessex Water	River Severn Via Sws	QUEEN STREET CSO	6	21	99.8
Wessex Water	River Avon Via Sws	AVONMOUTH ROAD CSO	36	18	100
Wessex Water	Bristol Avon	AVONMOUTH 'B' PUMPING STATION	5	11	100
Wessex Water	River Severn Estuary Via Sws	THIRD WAY CSO	2	11	89
Wessex Water	River Avon Via Sws	5 SPRINGFIELD AVENUE CSO	24	7	98.3
Wessex Water	River Avon Via Sws	OLD PARK RD COMBINED SEWER OVERFLOW	19	4	100
Wessex Water	River Avon	AVONMOUTH WAY COMBINED SEWER OF	3	4	76.8
Wessex Water	River Avon Via Sws	7 SPRINGFIELD AVENUE CSO	12	2	98.5
Wessex Water	River Avon	WATLING WAY COMBINED SEWER OVERFLOW	5	1	100
Wessex Water	River Avon	LAMPLIGHTERS SEWAGE PUMPING STATION	1	0	100
Wessex Water	River Avon Via Sws	LOWER HIGH STREET CSO	0	0	100
Wessex Water	Portbury Drove Rhyne	PORTBURY DROVE PUMPING STATION	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. 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.

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Analysing sewage pollution by the Water Industry

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