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South Cotswolds

Polluted by sewage 1,617 times in 2025 lasting 18,593 hours - That's 2.15 years!

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© Top of the Poops 2021-2024

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Live data for South Cotswolds in 2026

So far this year (as of 25 Oct 2026, 10:01) there has been 13,905 hours of sewage overflows, from 95 CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s - that's 1.61 years!

Sewage without rain in South Cotswolds

On 11 occasions since December 2024, no rain fell anywhere in South Cotswolds for days — and its CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s discharged anyway.

26 Dec - 30 Dec 2025 5 at once · 357h 3 Mar - 5 Mar 2025 4 at once · 123h 18 Jan 2025 2 at once · 26h

Totals for South Cotswolds in 2025

44 Sites polluted by Severn Trent Water Thames Water Wessex Water
1,617 sewage dumps
18,593 hours duration
That's 2.15 years. On average 4.4 times a day

Change Over Time

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Sewage pollution map of South Cotswolds: 1,617 spills in 2025, lasting 18,593 hours, by Severn Trent Water and Thames Water and Wessex Water
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Pollution Summary 2025

Here are all the reported sewage overflow totals for South Cotswolds 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 constituency 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 %
Thames Water River Coln FAIRFORD STW, FAIRFORD, GLOS 107 2,234 100
Thames Water Shorncote Ditch CIRENCESTER WWTW 125 2,067 100
Wessex Water River Avon TETBURY WASTE WATER TREATMENT WORKS 127 1,647 98.55
Thames Water Ampney Brook AMPNEY ST PETER WWTW 68 1,436 92.8
Wessex Water Gauze Brook HULLAVINGTON WWTW 79 1,286 100
Wessex Water River Avon DIDMARTON WATER RECYCLING CENTRE 54 1,072 95.6
Wessex Water Bristol Avon SUTTON BENGER WWTW 62 971 100
Severn Trent Water Nailsworth Stream AVENING STW 113 759 100
Thames Water River Thames CRICKLADE WWTW 59 641 100
Wessex Water Unnamed Braydon HANKERTON SEWAGE PUMPING STATION, W 34 548 100
Wessex Water River Avon MALMESBURY WWTW 47 544 100
Wessex Water Byde Mill Brook/River Avon THINGLEY WATER RECYCLING CENTRE 40 511 99.95
Wessex Water Braydon Brook FLISTERIDGE PS 29 393 94.8
Thames Water River Thames HATCHETTS SPS 33 378 99.5
Wessex Water Gauze Brook MILL LANE COMBINED SEWER OVERFLOW 24 364 93.3
Wessex Water River Avon GREAT SOMERFORD WWTW 52 334 100
Thames Water River Key PURTON STW, PURTON, SWINDON, WILTS 27 321 99.8
Wessex Water By Brook LONG DEAN WASTEWATER TREATMENT WORK 58 292 99.9
Wessex Water Charlton Stream TANNERS BRIDGE PUMPING STATION 24 287 100
Wessex Water Brinkworth Brook BRINKWORTH WWTW 25 265 99.9
Wessex Water Pudding Brook MANOR COTTAGES PUMPING STATION 40 251 100
Wessex Water River Avon NOAH'S ARK PUMPING STATION 19 250 100
Wessex Water Luckington Brook LUCKINGTON WATER RECYCLING CENTRE 13 178 92
Wessex Water Derry Brook STATION ROAD SEWAGE PUMPING STATION 22 171 100
Thames Water Leach LECHLADE STW 11 161 100
Wessex Water River Avon KINGTON LANGLEY PUMPING STATION 13 148 95.8
Wessex Water Little Avon WICKWAR WATER RECYCLING CENTRE 29 139 100
Wessex Water Woodbridge Brook LEA NORTH PUMPING STATION 18 135 100
Wessex Water Bourne SWALLETT GATE PUMPING STATION 35 127 100
Wessex Water River Avon ST JOHNS STREET PUMPING STATION 35 126 100
Wessex Water River Avon RAF HULLAVINGTON PS 13 121 100
Wessex Water Dauntsey Brook THE GREEN PS 25 94 100
Wessex Water Rodbourne Brook LOWER STANTON ST QUINTIN WW PS 20 85 100
Wessex Water Sherston Avon ST. JOHNS BRIDGE CSO 18 70 97.5
Wessex Water Burton Brook BURTON WASTEWATER TREATMENT WORKS 13 52 100
Wessex Water Avon SHERSTON WASTEWATER TREATMENT WORKS 14 43 99.8
Wessex Water River Avon LAWNWOOD COMBINED SEWER OVERFLOW 15 21 97.5
Wessex Water River Avon PARK ROAD COMBINED SEWER OVERFLOW 18 18 98.5
Wessex Water River Avon THE TARTERS CSO 24 9 98.8
Wessex Water River Avon BURTON HILL PS 2 7 100
Wessex Water River Avon HARPERS LANE CSO 3 6 100
Wessex Water Sherston Avon FOXLEY ROAD COMBINED SEWER OVERFLOW 21 5 96.9
Wessex Water River Avon PARLIAMENT ROW CSO 7 5 93.9
Wessex Water Luckington Brook ALDERTON STW 2 4 99.6
Wessex Water Woodbridge Brook BRINKWORTH CSO 0 0 94.9
Wessex Water River Avon CHURCH ROAD PUMPING STATION 0 0 99
Thames Water Dudgrove Stream KEMPSFORD STW, KEMPSFORD, FAIRFORD, 0 0 99.6
Wessex Water River Avon SPRINGFIELDS PUMPING STATION 0 0 99.9

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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