Chippenham was polluted by sewage 1,085 times in 2024
lasting 10,911 hours - that's 1.26 years!

Constituency

Select the constituency from the drop-down

✔ means we have experimental daily data since 2023

Live data for Chippenham in 2025

So far this year (as of Apr 16, 2025, 5:45 PM) there has been 2,878 hours of sewage overflows - that's 0.33 years!

Totals for Chippenham in 2024

27 Sites polluted by Wessex Water

1,085 sewage dumps
10,911 h duration

That's 1.26 years! On average 3 times a day

Change Over Time

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Constituencies near Chippenham

Waterways in Chippenham

Daily Data

We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for Chippenham, here you can see overflows in red, the darker the red, the more the CSO overflowed that day.

Each CSO has a row, the most recent data is on the right hand side.

Monitoring Online Monitoring Offline Polluting Potentially Polluting Unknown

Daily data is experimental and data is not guaranteed to be accurate. Please inform us of any issue, we will fix.

Pollution Summary 2024

Here are all the reported sewage overflow totals for Chippenham in 2024. 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 28 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 %
Wessex Water	Abberd Brook	THE PONDS PS	154	3,160	95.1
Wessex Water	Bristol Avon	LACOCK WATER RECYCLING CENTRE	75	1,295	100
Wessex Water	River Avon	CHIPPENHAM WATER RECYCLING CENTRE	91	1,291	99.95
Wessex Water	River Marden	CALNE WASTEWATER TREATMENT WORKS	110	1,124	100
Wessex Water	Springs Watercourse	RAF LYNEHAM WWTW	53	734	100
Wessex Water	Rivers Brook	COMPTON BASSETT WWTW	34	529	100
Wessex Water	Hancock'S Water	WOOTTON BASSETT WWTW	42	500	99.7
Wessex Water	Hardenhuish Brook	GASTON ROAD CSO	76	487	100
Wessex Water	Unknown	MOSSES MILL CSO 2	64	398	99.5
Wessex Water	River Avon	WESTMEAD PUMPING STATION	24	298	97
Wessex Water	Cowage Brook,	TOCKENHAM	52	210	99.9
Wessex Water	Unknown	BRISTOL ROAD CSO	63	198	96.5
Wessex Water	River Avon	CSO O/S 29 HIGH STREET	63	167	99.9
Wessex Water	River Marden	PATFORD STREET CSO	32	111	99.5
Wessex Water	River Avon	MONKTON PARK OFFICES CSO	19	96	99.5
Wessex Water	Hancock'S Water	WOOTTON BASSETT CSO	27	90	91
Wessex Water	River Avon Via Sws	LONG CLOSE CSO	44	76	99.6
Wessex Water	Byde Mill Brook	NETHERCOTE HILL PUMPING STATION	11	60	100
Wessex Water	River Marden	THE STRAND CSO	24	25	99.2
Wessex Water	Unknown	PATFORD ST/BANK OF RIVER MARDEN CSO	6	22	95.8
Wessex Water	River Avon	MARY STREET COMBINED SEWER OVERFLOW	2	13	86.7
Wessex Water	Westbury Park W/C Via Sws	NEW ROAD COMBINED SEWER OVERFLOW	2	10	100
Wessex Water	River Avon	WOOD LANE CSO	10	3	99.6
Wessex Water	River Avon	CHARTER ROAD CSO	2	3	99.6
Wessex Water	River Marden Via Sws	MARKET HILL CSO	2	0	99.4
Wessex Water	River Marden Via Sws	WOOD STREET COMBINED SEWER OVERFLOW	2	0	99.3
Wessex Water	Unknown	MOSSES MILL CSO 1	1	0	99.2
Wessex Water	Unknown	DALLAS ROAD CSO	0	0	88.2

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

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