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Polluted by sewage 877 times in 2025 lasting 2,457 hours
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Donate NowHere are all the reported sewage overflow totals for Preston (Preston) 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 % |
|---|---|---|---|---|---|
| United Utilities | River Darwen | HENNEL LANE CSO | 43 | 317 | 99.8 |
| United Utilities | Eaves Bk, Savick Bk | MANOR HOUSE LANE CSO 33037 | 23 | 233 | 100 |
| United Utilities | River Ribble Estuary | WALTON-LE-DALE STW | 28 | 232 | 100 |
| United Utilities | River Ribble | GEORGE STREET CSO 331VJ | 67 | 163 | 90.4 |
| United Utilities | Savick Brook | SHAROE GREEN HOSPITAL CSO 333JK | 82 | 155 | 97.9 |
| United Utilities | River Ribble | BLACKPOOL ROAD CSO | 78 | 146 | 99.9 |
| United Utilities | Savick Brook | SAVICK BROOK PUMPING STATION | 46 | 146 | 96.7 |
| United Utilities | Eaves Brook | VICTORIA RD CSO 33023 | 61 | 146 | 99.5 |
| United Utilities | River Ribble | BANK PARADE CSO | 39 | 125 | 100 |
| United Utilities | Eaves Bk, Savick Bk | CATTLE MARKET CSO | 10 | 113 | 100 |
| United Utilities | River Ribble | HOLME ROAD COMBINED SEWER OVERFLOW | 62 | 104 | 93.1 |
| United Utilities | Savick Bk, Ribble Est | LEA GATE PUMPING STATION | 22 | 83 | 98.7 |
| United Utilities | River Ribble Tidal Via Sws | RIBBLETON LANE CSO 33103 | 10 | 81 | 100 |
| United Utilities | Swillbrook Clvrt R Ribble | ALBYN STREET EAST CSO 33102 | 4 | 54 | 99.8 |
| United Utilities | Savick Brook | SHAROE GREEN LANE CSO 33034 | 23 | 43 | 99.9 |
| United Utilities | Savick Brook Rvr Ribble | COW HILL CLARKSONS FOLD CSO 33100 | 4 | 38 | 100 |
| United Utilities | River Ribble | WOLSELEY ROAD CSO | 3 | 37 | 99.9 |
| United Utilities | Tidal River Ribble | PRESTON NETWORK TERMINAL PUMPING ST | 11 | 35 | 99.9 |
| United Utilities | Rvr Ribble | THORNPARK PUMPING STATION 33007 | 10 | 33 | 99.9 |
| United Utilities | Eaves Brook Savick Brook | WATLING STREET ROAD CSO 33024 | 3 | 29 | 91.8 |
| United Utilities | River Ribble | FISHERGATE HILL CSO (CHAMBER C9) | 3 | 20 | 52.5 |
| United Utilities | Savick Brook | BLACK BULL MH C1 CSO 331EQ | 13 | 16 | 92 |
| United Utilities | Of River Ribble | COP LANE CSO | 1 | 15 | 100 |
| United Utilities | Chain Caul Culvert | POWIS ROAD CSO 332MG PRE0025 | 2 | 14 | 100 |
| United Utilities | Chain Caul Ward Storm | WATERY LANE DOUGLAS ST CSO PRE0110 | 2 | 14 | 100 |
| United Utilities | River Ribble | WATERY LANE FORMER PS CSO 339DQ | 2 | 14 | 70.3 |
| United Utilities | River Ribble | FISHERGATE HILL CSO CHAMBER C8 | 3 | 13 | 60.8 |
| United Utilities | Chain Caul Storm Culvert | WATERY LANE CSO PRE0108 | 1 | 4 | 99.9 |
| United Utilities | Savick Brk Ribble Est | BANKSFIELD AVENUE CSO 33027 | 6 | 4 | 99.9 |
| United Utilities | Savick Brook Via Sws | 2 MILL LANE COMBINED SEWER OVERFLOW | 5 | 3 | 95.5 |
| United Utilities | Moore Brook Culvert | ST GEORGES ROAD CSO | 168 | 3 | 96.2 |
| United Utilities | Moor Brook Culvert | 208 DEEPDALE ROAD CSO | 8 | 2 | 94 |
| United Utilities | Swillbrook Culvert | FRENCHWOOD KNOLL CSO 331UX | 18 | 2 | 100 |
| United Utilities | River Ribble | VALLEY ROAD PUMPING STATION | 3 | 1 | 100 |
| United Utilities | Moorbrook Culvert -> River Ribble | WATERY LANE CSO SHAFT C1 PRE0093 | 1 | 1 | 78.1 |
| United Utilities | River Ribble Estuary | ST PAULS ROAD CSO | 3 | 0 | 93.6 |
| United Utilities | Swill Brook Clvrt River Ribble | HALSBURY STREET CSO 331XR | 3 | 0 | 99.9 |
| United Utilities | Clvrt Moor Brook Rvr Ribb | MOORBROOK STREET CSO 332F2 | 3 | 0 | 100 |
| United Utilities | River Ribble | HAWTHORN CRESCENT CSO | 3 | 0 | 98.7 |
| United Utilities | River Ribble Via Storm Culvert | 18 DEEPDALE ROAD | 0 | 0 | 54.7 |
| United Utilities | Eaves Brook | 75 LOWER BANK ROAD CSO | 0 | 0 | 100 |
| United Utilities | River Ribble Tidal | DALE STREET CSO 331R7 | 0 | 0 | 88.8 |
| United Utilities | Savick Brook | HASLAM PARK NORTH & SOUTH CSO | 0 | 0 | 99.8 |
| United Utilities | Storm Culvert Into R Ribble | LONDON ROAD | 0 | 0 | 99.9 |
| United Utilities | River Ribble Via Chain Culvert | MARSH LANE CSO PRE0021 | 0 | 0 | 100 |
| United Utilities | Storm Culvert, Ribble | PERCY STREET CSO | 0 | 0 | 99.8 |
| United Utilities | Chain Caul Culvert Into Ribble | WEST STRAND CSO CHAMBER C10 PRE0071 | 0 | 0 | 100 |
| United Utilities | Tun Brook | GRIMSARGH CSO 333LG | 0 | 0 | 96.3 |
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
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.
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Get in touch if you have queries or want to discuss our data.
press [at] top-of-the-poops.org