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South West Devon

Polluted by sewage 2,836 times in 2025 lasting 29,068 hours - That's 3.36 years!

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© Top of the Poops 2021-2024

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Live data for South West Devon in 2026

So far this year (as of 6 Oct 2026, 07:00) there has been 21,345 hours of sewage overflows, from 131 CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s - that's 2.47 years!

Sewage without rain in South West Devon

On 6 occasions since December 2024, no rain fell anywhere in South West Devon for days — and its CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway s discharged anyway.

8 May - 9 May 2025 1 at once · 22h 29 Dec - 30 Dec 2025 2 at once · 18h 26 Sept 2025 1 at once · 9h

Totals for South West Devon in 2025

57 Sites polluted by South West Water
2,836 sewage dumps
29,068 hours duration
That's 3.36 years. On average 7.8 times a day

Change Over Time

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Sewage pollution map of South West Devon: 2,836 spills in 2025, lasting 29,068 hours, by South West Water
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Waterways in South West Devon

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Pollution Summary 2025

Here are all the reported sewage overflow totals for South West Devon 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 %
South West Water Milton Stream STOKE HILL WWTW 227 3,905 99.95
South West Water Unknown LUTTON STW 224 2,894 99.95
South West Water River Meavy GRATTON WASTEWATER TREATMENT WORKS 143 2,484 100
South West Water River Meavy GRATTON CSO 167 2,123 99.9
South West Water River Walkham WALKHAMPTON WWTW SSO 104 2,011 100
South West Water River Erme IVYBRIDGE STW 121 1,847 100
South West Water River Walkham BEDFORD BRIDGE CSO 111 1,592 100
South West Water Wembury Bay WEMBURY WWTW 74 1,485 99.5
South West Water Silverbridge Lake SPARKWELL WASTEWATER TREATMENT WORK 79 1,441 100
South West Water River Tavy BUCKLAND MONACHORUM WWTW 52 941 100
South West Water Newton Creek BRIDGEND PUMPING STATION 53 920 97
South West Water River Plym MARSH MILLS WWTW 84 871 98.8
South West Water Long Brook Via Sws 3 ST PETERS CLOSE CSO 107 841 99.9
South West Water Unknown UGBOROUGH STW 92 798 99.05
South West Water River Erme Estuary HOLBETON SEWAGE TREATMENT WORKS 101 505 74.4
South West Water Unknown LEE MILL STW 116 448 99.9
South West Water River Tavy HARROWBEER CSO 83 430 100
South West Water River Yealm LEE MILL PUMPING STATION 36 359 100
South West Water River Walkham CHAPEL LANE CSO 41 300 100
South West Water River Erme PARSONAGE COTTAGE HILL CSO 27 296 100
South West Water River Meavy LAKE LANE CSO 46 276 98.5
South West Water Tory Brook PLYMOUTH ROAD CSO 88 271 100
South West Water Hooe Lake RADFORD STW 54 267 99.8
South West Water River Yealm CORNWOOD PUMPING STATION 34 247 99.7
South West Water Longbrook MARKET ROAD CSO 46 203 100
South West Water Unknown CLEARBROOK STW 26 171 98.8
South West Water River Yealm YEALMPTON WWTW 18 149 100
South West Water English Channel- Heybrook Bay HEYBROOK BAY PUMPING STATION 62 136 99.9
South West Water River Yealm Est ELBURTON SOUTH PS 46 118 99.8
South West Water Wembury Bay WEMBURY BEACH PSCSO/EO 13 113 98.9
South West Water English Channelat Wembury Bay HMS CAMBRIDGE PUMPING STATION 15 88 100
South West Water River Meavy CSO ADJ GLENVIEW 26 87 100
South West Water Broad Ooze, Yealm Estuary BRIXTON WASTEWATER TREATMENT WORKS 22 63 99
South West Water Hey Brook GABBER INJECTOR PUMPING STATION 15 50 96
South West Water Longbrook Stream DARK STREET LANE CSO 29 41 100
South West Water Cattewater TURNCHAPEL BARRACKS PUMPING STATION 25 39 100
South West Water Cattewater TURNCHAPEL SLIPWAY PUMPING STATION 30 34 100
South West Water River Plym Estuary ORESTON QUAY (NO 2) PUMPING STATION 15 31 100
South West Water River Erme ERMINGTON STW 9 30 100
South West Water River Meavy MEAVY WASTEWATER TREATMENT WORKS 34 26 100
South West Water Silverbridge Lake TINWOOD COMBINED SEWER OVERFLOW 14 25 96.9
South West Water River Yealm TORBRIDGE SOUTH CSO 16 20 99.5
South West Water Hooe Lake, Plym Estuary HOOE LAKE PUMPING STATION 6 19 100
South West Water Pomphlett Creek BILLACOMBE PUMPING STATION 19 15 100
South West Water Cattewater Plym Estuary MARINE ROAD NO 1 PUMPING STATION 8 13 100
South West Water Tory Brook Via Sws NEWNHAM ROAD CSO 22 10 100
South West Water Hooe Lake Via Sws HOOE ROAD CSO 18 4 100
South West Water River Yealm Estuary COURTWOOD ROAD PSCSO/EO 4 2 100
South West Water Silverbridge Lake WINSTON LANE CSO 9 2 100
South West Water River Erme BITTAFORD STW 5 1 100
South West Water River Yealm CHURCH WAY CSO 8 1 97.7
South West Water River Yealm TORBRIDGE NORTH CSO 2 0 98
South West Water Newton Creek KILN QUAY PUMPING STATION 2 0 100
South West Water River Erme PLAYING FIELD CSO 2 0 100
South West Water Tory Brook MOORLAND ROAD CSO 1 0 100
South West Water Bigbury Bay PUMPING STATION AT WARREN POINT 2 0 100
South West Water Newton Creek RIVER SIDE NO 1 CSO 3 0 98.2
South West Water River Erm ERME ROAD CSO 0 0 100
South West Water Newton Creek NOSS MAYO PUMPING STATION 0 0 97.8
South West Water River Erme PAVILION PUMPING STATION 0 0 100
South West Water River Erm STATION 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.

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Analysing sewage pollution by the Water Industry

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