It's a Dirty Business

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Preston - 2025 Sewage

Polluted by sewage 1,763 hours in 2025 , monitoring offline 3,480 hours , potential overflows 198 hours

© OpenStreetMap contributors
Contains OS Data © Crown copyright & database right 2021-2024
© Top of the Poops 2021-2024

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View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in Preston for 2025. It is an estimate, based on very poor quality live data from the Water Companies. This may not align with the 'official' reported sewage values from the water companies, which is reported in April following then end of the year - so 2025 numbers are reported in April 2026.

What's a potential overflow? If the CSO goes 'Offline' while its Overflowing, we don't know if it stopped overflowing until we get a 'Stop' event.

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Constituencies near Preston

Daily Data

Jan - 508 hours , 23 potential
Feb - 44 hours , 1 offline
Mar - 12 hours , 0 offline
Apr - 1 hours , 5 offline
May - 68 hours , 0 potential
Jun - 267 hours , 5 potential
Jul - 13 hours , 1,682 offline
Aug - 10 hours , 1 potential
Sept - 397 hours , 29 potential
Oct - 162 hours , 17 potential
Nov - 114 hours , 77 potential
Dec - 162 hours , 41 potential
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
United Utilities Manor House Lane CSO Eaves Bk, Savick Bk 23 224 h 55m -
United Utilities Marsh Lane CSO River Ribble Via Chain Culvert 58 156 h 40m 698 h
United Utilities GEORGE STREET CSO River Ribble 59 135 h 48m 3 h
United Utilities Savick Brook PS (339CT) Savick Brook 31 124 h 2m 143 h
United Utilities Blackpool Road CSO River Ribble 51 122 h 50m 3 h
United Utilities Victoria Road CSO Gilda Brook Via Sws 46 115 h 56m -
United Utilities Cattle Market CSO Eaves Bk, Savick Bk 13 113 h 28m -
United Utilities Bank Parade CSO River Ribble 35 111 h 28m -
United Utilities Lea Gate PS Savick Bk, Ribble Est 18 81 h 53m 75 h
United Utilities Ribbleton Lane CSO River Ribble Tidal Via Sws 11 81 h 18m -
United Utilities HOLME ROAD CSO Holme Beck Via Sws 42 73 h 42m -
United Utilities Albyn Street East CSO Swillbrook Clvrt R Ribble 7 55 h 2m -
United Utilities Wolseley Road CSO River Ribble 3 37 h 45m -
United Utilities THORNPARK PS Rvr Ribble 12 33 h 17m -
United Utilities Watling Street Road CSO Eaves Brook Savick Brook 4 29 h 31m -
United Utilities HOLME ROAD CSO Holme Beck Via Sws 12 27 h 26m -
United Utilities GEORGE STREET CSO River Ribble 12 27 h 20m -
United Utilities Victoria Road CSO Gilda Brook Via Sws 12 24 h 34m -
United Utilities Savick Brook PS (339CT) Savick Brook 11 21 h 32m 77 h
United Utilities Bank Parade CSO River Ribble 9 18 h -
United Utilities Powis Road CSO Chain Caul Culvert 3 14 h 54m -
United Utilities Watery Lane/Douglas Street CSO Chain Caul Ward Storm 4 14 h 41m -
United Utilities Watery Lane PS CSO Sutton Brook 2 14 h 8m 1,362 h
United Utilities Fishergate Hill CSO River Ribble 3 13 h 26m -
United Utilities Blackpool Road CSO River Ribble 11 13 h 24m -
United Utilities Manor House Lane CSO Eaves Bk, Savick Bk 2 11 h 38m -
United Utilities Fishergate Hill CSO River Ribble 2 9 h 34m -
United Utilities Lea Gate PS Savick Bk, Ribble Est 3 8 h 16m 17 h
United Utilities West Strand CSO Chain Caul Culvert Into Ribble 16 6 h 58m 22 h
United Utilities Fishergate Hill CSO River Ribble 1 6 h 54m -
United Utilities Fishergate Hill CSO River Ribble 3 6 h 16m 14 h
United Utilities Watery Lane CSO Chain Caul Storm Culvert 2 4 h 54m 3 h
United Utilities 2 Mill Lane CSO Savick Brook Via Sws 5 4 h 20m -
United Utilities Banksfield Avenue CSO Savick Brk Ribble Est 6 3 h 51m -
United Utilities St George's Road CSO Moore Brook Culvert 7 3 h 22m -
United Utilities Frenchwood Knoll CSO Swillbrook Culvert 9 2 h 26m 0 h
United Utilities 208 Deepdale Road CSO Moor Brook Culvert 6 1 h 56m 0 h
United Utilities Watery Lane CSO (Shaft C1) Moorbrook Culvert -> River Ribble 1 1 h 2m 1,225 h
United Utilities Old Lancaster Lane CSO Culverted Section Of Moor Brook, River Ribble 5 1 h 2m 0 h
United Utilities Old Lancaster Lane CSO Culverted Section Of Moor Brook, River Ribble 2 1 h -
United Utilities St Paul's Road combined sewer overflow (332TX) (PRE0006) Mersey Estuary 2 0 h 40m 0 h
United Utilities MOORBROOK STREET CSO Clvrt Moor Brook Rvr Ribb 3 0 h 40m 0 h
United Utilities Hawthorn Crescent CSO River Ribble 3 0 h 36m -
United Utilities Lightfoot Lane PS Unamed Woodplumpton Brook 1 0 h 24m -
United Utilities Halsbury Street CSO Swill Brook Clvrt River Ribble 2 0 h 18m 1 h
United Utilities Frenchwood Knoll CSO Swillbrook Culvert 1 0 h 12m -
United Utilities London Road (Preston) CSO (332C8) Savick Brook 0 0 h -
United Utilities St George's Road CSO Moore Brook Culvert 0 0 h -
United Utilities London Road CSO Storm Culvert Into R Ribble 0 0 h -
United Utilities London Road (Preston) CSO (332C8) Savick Brook 0 0 h -
United Utilities Watery Lane PS CSO Sutton Brook 0 0 h -
United Utilities Cattle Market CSO Eaves Bk, Savick Bk 0 0 h -
United Utilities Dale Street CSO River Ribble Tidal 0 0 h -
United Utilities THORNPARK PS Rvr Ribble 0 0 h -
United Utilities St Paul's Road combined sewer overflow (332TX) (PRE0006) Mersey Estuary 0 0 h -
United Utilities Haslam Park North and South Combined Sewer Overflow (Site ID 33026) (PRE0090) Savick Brook 0 0 h -
United Utilities Haslam Park North and South Combined Sewer Overflow (Site ID 33026) (PRE0090) Savick Brook 0 0 h -
United Utilities Hawthorn Crescent CSO River Ribble 0 0 h -
United Utilities Manchester Road/Selbourne Road CSO River Ribble 0 0 h -
United Utilities Halsbury Street CSO Swill Brook Clvrt River Ribble 0 0 h -
United Utilities 75 LOWER BANK ROAD CSO Eaves Brook 0 0 h -
United Utilities Banksfield Avenue CSO Savick Brk Ribble Est 0 0 h -
United Utilities Albyn Street East CSO Swillbrook Clvrt R Ribble 0 0 h -
United Utilities Watery Lane/Douglas Street CSO Chain Caul Ward Storm 0 0 h -
United Utilities Powis Road CSO Chain Caul Culvert 0 0 h -
United Utilities 18 Deepdale Road CSO River Ribble Via Storm Culvert 0 0 h 2 h
United Utilities Lightfoot Lane PS Unamed Woodplumpton Brook 0 0 h -
United Utilities Watling Street Road CSO Eaves Brook Savick Brook 0 0 h -
United Utilities London Road CSO Storm Culvert Into R Ribble 0 0 h -
United Utilities West Strand CSO Chain Caul Culvert Into Ribble 0 0 h -
United Utilities Wolseley Road CSO River Ribble 0 0 h -
United Utilities Percy Street CSO Storm Culvert, Ribble 0 0 h 0 h
United Utilities 208 Deepdale Road CSO Moor Brook Culvert 0 0 h -
United Utilities Watery Lane CSO Chain Caul Storm Culvert 0 0 h -
United Utilities MOORBROOK STREET CSO Clvrt Moor Brook Rvr Ribb 0 0 h -
United Utilities 2 Mill Lane CSO Savick Brook Via Sws 0 0 h -
United Utilities Ribbleton Lane CSO River Ribble Tidal Via Sws 0 0 h -
United Utilities Marsh Lane CSO River Ribble Via Chain Culvert 0 0 h -
United Utilities Percy Street CSO Storm Culvert, Ribble 0 0 h 5 h
United Utilities Haslam Park North and South Combined Sewer Overflow (Site ID 33026) (PRE0090) Savick Brook 0 0 h -
United Utilities 75 LOWER BANK ROAD CSO Eaves Brook 0 0 h 0 h
United Utilities Dale Street CSO River Ribble Tidal 0 0 h 3 h
United Utilities Watery Lane CSO (Shaft C1) Moorbrook Culvert -> River Ribble 0 0 h -
United Utilities 18 Deepdale Road CSO River Ribble Via Storm Culvert 0 0 h -
United Utilities Manchester Road/Selbourne Road CSO River Ribble 0 0 h 15 h

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

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.