Preston was polluted by sewage 925 times in 2024
lasting 3,339 hours

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Contains OS Data © Crown copyright & database right 2021-2024
© Top of the Poops 2021-2024
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✔ means we have experimental daily data since 2023
Live data for Preston in 2025
So far this year (as of Apr 16, 2025, 5:45 PM) there has been 589 hours of sewage overflows
Totals for Preston in 2024
27 Sites polluted by United Utilities
925 sewage dumps
3,339 h duration
That's 4.64 months. On average 2.5 times a day
Change Over Time
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Constituencies near Preston
Waterways in Preston
Daily Data
We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for Preston, 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 Preston 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 37 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 %
United Utilities Savick Brook SAVICK BROOK PUMPING STATION 49 465 98.8
United Utilities Swill Brook Clvrt River Ribble HALSBURY STREET CSO 331XR 46 426 98.1
United Utilities Eaves Bk, Savick Bk MANOR HOUSE LANE CSO 33037 41 394 100
United Utilities River Ribble Via Chain Culvert MARSH LANE CSO PRE0021 137 301 99.2
United Utilities Eaves Brook VICTORIA RD CSO 33023 83 252 100
United Utilities Savick Bk, Ribble Est LEA GATE PUMPING STATION 48 228 92.7
United Utilities River Ribble GEORGE STREET CSO 331VJ 98 212 94.2
United Utilities River Ribble HOLME ROAD COMBINED SEWER OVERFLOW 71 193 99.5
United Utilities River Ribble BANK PARADE CSO 54 166 100
United Utilities River Ribble Estuary ST PAULS ROAD CSO 64 165 95
United Utilities Eaves Bk, Savick Bk CATTLE MARKET CSO 13 146 100
United Utilities River Ribble Tidal Via Sws RIBBLETON LANE CSO 33103 14 96 100
United Utilities Tidal River Ribble PRESTON NETWORK TERMINAL PUMPING ST 19 73 99.6
United Utilities Eaves Brook Savick Brook WATLING STREET ROAD CSO 33024 9 52 100
United Utilities Savick Brk Ribble Est BANKSFIELD AVENUE CSO 33027 9 36 99.7
United Utilities Swillbrook Clvrt R Ribble ALBYN STREET EAST CSO 33102 5 32 86
United Utilities Swillbrook Culvert FRENCHWOOD KNOLL CSO 331UX 46 20 98.4
United Utilities Savick Brook Via Sws 2 MILL LANE COMBINED SEWER OVERFLOW 7 18 99.2
United Utilities River Ribble WOLSELEY ROAD CSO 4 17 100
United Utilities Chain Caul Culvert Into Ribble WEST STRAND CSO CHAMBER C10 PRE0071 33 13 99.1
United Utilities River Ribble Via Storm Culvert 18 DEEPDALE ROAD 32 7 99.45
United Utilities River Ribble HAWTHORN CRESCENT CSO 12 4 99.2
United Utilities Moore Brook Culvert ST GEORGES ROAD CSO 13 4 98.2
United Utilities Moor Brook Culvert 208 DEEPDALE ROAD CSO 10 2 99.3
United Utilities Chain Caul Culvert POWIS ROAD CSO 332MG PRE0025 3 2 100
United Utilities Chain Caul Ward Storm WATERY LANE DOUGLAS ST CSO PRE0110 3 2 100
United Utilities Clvrt Moor Brook Rvr Ribb MOORBROOK STREET CSO 332F2 2 0 99.2
United Utilities River Ribble FISHERGATE HILL CSO CHAMBER C8 0 0 2.2
United Utilities Moorbrook Culvert -> River Ribble WATERY LANE CSO SHAFT C1 PRE0093 0 0 99.3
United Utilities Chain Caul Storm Culvert WATERY LANE CSO PRE0108 0 0 99.3
United Utilities Storm Culvert, Ribble PERCY STREET CSO 0 0 97.8
United Utilities River Ribble FISHERGATE HILL CSO (CHAMBER C9) 0 0 7.2
United Utilities Eaves Brook 75 LOWER BANK ROAD CSO 0 0 99.4
United Utilities Unamed Woodplumpton Brook LIGHTFOOT LANE PS 0 0 100
United Utilities Savick Brook HASLAM PARK NORTH & SOUTH CSO 0 0 99.3
United Utilities Storm Culvert Into R Ribble LONDON ROAD 0 0 99.7
United Utilities River Ribble Tidal DALE STREET CSO 331R7 0 0 98.1

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.

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