Cheltenham

Polluted by sewage 128 times in 2025 lasting 1,299 hours

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Totals for Cheltenham in 2025

6 Sites polluted by Severn Trent Water

128 sewage dumps

1,299 hours duration

Sewage pollution map of Cheltenham — Sewage pollution map of Cheltenham: 1,299 hours in 2025

That's 1.8 months. 2.5 times a week, on average

Change Over Time

Constituency for Cheltenham

Nearby Constituencies

Waterways in Cheltenham

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Pollution Summary 2025

Here are all the reported sewage overflow totals for Cheltenham 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 %
Severn Trent Water	River Chelt	CHELTENHAM HAYDEN WWTW	37	437	100
Severn Trent Water	Hyde Brook	BROCKHAMPTON STW	25	390	100
Severn Trent Water	Ham Brook	BADGEWORTH - BADGEWORTH ROAD SPS	20	246	99.2
Severn Trent Water	Hatherley Brook	WHITTINGTON RD/MISERDEN RD JCN CSO	17	161	98
Severn Trent Water	Mill Stream	PRESTBURY LINDEN CLOSE CSO	25	42	100
Severn Trent Water	River Chelt	DOWDESWELL CSO	4	20	98.4
Severn Trent Water	River Chelt	CHELTENHAM - ARLE ROAD 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. 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.

Top of the Poops

Analysing sewage pollution by the Water Industry

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