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Tatton - 2025 Sewage

Polluted by sewage 9,142 hours in 2025 - That's 1.06 years , monitoring offline 4,612 hours , potential overflows 5,224 hours

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

Which Year?

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✔ means we have live data (𝑥 if not)

View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in Tatton 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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Daily Data

Jan - 3,777 hours , 35 potential
Feb - 47 hours , 0 potential
Mar - 46 hours , 265 offline
Apr - 10 hours , 11 potential
May - 131 hours , 299 potential
Jun - 163 hours , 3 potential
Jul - 98 hours , 704 potential
Aug - 30 hours , 991 potential
Sept - 635 hours , 1,098 potential
Oct - 302 hours , 1,097 potential
Nov - 1,568 hours , 736 potential
Dec - 2,328 hours , 245 potential
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
United Utilities MOBBERLEY WwTW Mobberley Brook 54 588 h 58m -
United Utilities Town Lane CSO Mobberley Brook Rv Bollin 72 533 h 34m 66 h
United Utilities ALDERLEY EDGE WwTW Whitehall Brook 70 508 h 5m 307 h
United Utilities Hale Storm Tanks and WwPPS River Bollin 35 490 h 23m 0 h
United Utilities Ollershaw Lane PS Witton Brook 30 427 h 53m -
United Utilities KNUTSFORD WwTW Birkin Brook 67 410 h 5m 62 h
United Utilities Hale Storm Tanks and WwPPS River Bollin 28 356 h 29m -
United Utilities WILMSLOW WwTW River Dean 45 352 h 21m 2,314 h
United Utilities Town Lane CSO Mobberley Brook Rv Bollin 27 350 h 12m 18 h
United Utilities ALDERLEY EDGE WwTW Whitehall Brook 24 329 h 18m 68 h
United Utilities Alderley Edge WwTW CSO MAC0174 Carr Brook 42 308 h 49m 1 h
United Utilities WILMSLOW WwTW River Dean 20 283 h 32m -
United Utilities Dane Bank Road CSO Slitten Brook 61 254 h 14m 0 h
United Utilities MOBBERLEY WwTW Mobberley Brook 20 252 h 21m -
United Utilities NETHER PEOVER WwTW Crow Brook 18 242 h 41m 2 h
United Utilities Tabley WWTW Tabley Brook 24 224 h 40m 0 h
United Utilities Alderley Edge WwTW CSO MAC0174 Carr Brook 19 173 h 35m 0 h
United Utilities KNUTSFORD WwTW Birkin Brook 21 170 h 30m -
United Utilities Ollershaw Lane PS Witton Brook 9 164 h 16m -
United Utilities WILMSLOW WwTW River Dean 40 155 h 53m 1 h
United Utilities Sproston WWTW River Croco 25 136 h 24m 1 h
United Utilities Sow Brook PS Sow Brook 11 131 h 56m 66 h
United Utilities Hale Storm Tanks and WwPPS River Bollin 52 122 h -
United Utilities MOBBERLEY WwTW Mobberley Brook 51 116 h 33m 1 h
United Utilities Ollerton PS Marthall Brook 19 115 h 32m -
United Utilities NETHER PEOVER WwTW Crow Brook 7 111 h 54m -
United Utilities HIGH LEGH WwTW Agden Brook 14 110 h 8m -
United Utilities Rear of Knowle House CSO River Dean 34 103 h 14m 0 h
United Utilities Tabley WWTW Tabley Brook 17 101 h 16m -
United Utilities Comberbach PS Kid 13 89 h 26m -
United Utilities GREEN DRAGON HOTEL CSO River Bollin 15 87 h 42m 19 h
United Utilities Ollerton PS Marthall Brook 12 84 h 1m 0 h
United Utilities Rear of No. XXX Bridgewater Street CSO Slitten Brook 29 78 h 10m 42 h
United Utilities St Johns Road CSO Birkin Brook Via Sws 30 76 h 22m 4 h
United Utilities CHANCEL LANE CSO River Bollin 34 69 h 30m -
United Utilities WILMSLOW WwTW River Dean 13 67 h 15m -
United Utilities Middlewich Road/Parkfield Road CSO River Dane Via Sws 43 61 h 12m 18 h
United Utilities Sproston WWTW River Croco 22 57 h -
United Utilities QUARRY BANK MILL CSO River Bollin 13 49 h -
United Utilities Reeman Court (Manhole H4) River Dean 9 48 h 4m 25 h
United Utilities Bexton Road CSO Serpentine Water 30 47 h 30m 1 h
United Utilities Fulshaw Cross CSO Whitehall Brook Via Sws 26 44 h 36m 758 h
United Utilities Hale Storm Tanks and WwPPS River Bollin 13 42 h 40m -
United Utilities Dane Bank Road CSO Slitten Brook 16 40 h 34m -
United Utilities Sandle Bridge Wastewater Network PS Pedley Brook 5 39 h 29m -
United Utilities PLUMLEY WwTW Peover Eye 33 39 h 13m 1 h
United Utilities Rear 237 Runcorn Road CSO Trent And Mersey Canal 18 37 h 20m 0 h
United Utilities Knutsford Main PS Moor Pool 12 36 h 41m -
United Utilities The Wilmslow Park Road CSO Whitfield Brook 13 35 h 22m 559 h
United Utilities MOBBERLEY WwTW Mobberley Brook 11 34 h 12m -
United Utilities Rear of Knowle House CSO River Dean 11 33 h 12m -
United Utilities CHANCEL LANE CSO River Bollin 11 25 h 54m -
United Utilities 42 Runcorn Road CSO Weaver Navigation 10 24 h 58m 2,008 h
United Utilities Fulshaw Cross CSO Whitehall Brook Via Sws 11 24 h 34m -
United Utilities St Johns Road CSO Birkin Brook Via Sws 11 22 h 48m -
United Utilities Sow Brook PS Sow Brook 2 18 h 36m -
United Utilities QUARRY BANK MILL CSO River Bollin 4 14 h 44m -
United Utilities HIGH LEGH WwTW Agden Brook 5 13 h 53m -
United Utilities Rear of No. XXX Bridgewater Street CSO Slitten Brook 2 13 h 46m -
United Utilities Sandle Bridge Wastewater Network PS Pedley Brook 2 13 h 38m -
United Utilities Bexton Road CSO Serpentine Water 11 13 h 32m -
United Utilities Comberbach PS Kid 1 13 h 23m -
United Utilities Middlewich Road/Parkfield Road CSO River Dane Via Sws 8 12 h 46m 1 h
United Utilities Wilmslow Park South Combined Sewer Overflow (Site ID 272YI) (MAC0047) River Bollin 2 10 h 16m -
United Utilities Hoo Green WwTW Tabley Brook 6 8 h 52m 504 h
United Utilities OWLEY WOOD ROAD CSO River Weaver 14 8 h 2m 4 h
United Utilities Eagle Brow CSO (489KT) River Mersey 7 7 h 34m -
United Utilities The Wilmslow Park Road CSO Whitfield Brook 3 7 h 6m 90 h
United Utilities Opp River Street CSO River Bollin 3 6 h 32m -
United Utilities THE CARRS CSO River Bollin 1 6 h 12m -
United Utilities Oughtrington Lane CSO Bridgewater Canal 2 6 h 6m 1 h
United Utilities Mobberley Road Combined Sewer Overflow (Site ID 272GZ) (MAC0122) Birkin Brook 4 5 h 50m 4 h
United Utilities Knutsford Main PS Moor Pool 1 5 h 49m -
United Utilities PLUMLEY WwTW Peover Eye 8 5 h 31m -
United Utilities Poplar Cottages CSO Kid Brook Via Sws 4 4 h 32m 5 h
United Utilities Hawthorn Lane Clvrt'D River Bollin 7 4 h 30m 23 h
United Utilities Woodlands Grove CSO Trent 6 4 h 14m 33 h
United Utilities OWLEY WOOD ROAD CSO River Weaver 4 4 h -
United Utilities Dean Road CSO River Dean 1 2 h 13m 443 h
United Utilities THE CARRS CSO River Bollin 1 2 h 12m 3 h
United Utilities GREEN DRAGON HOTEL CSO River Bollin 3 2 h 6m -
United Utilities Rear 237 Runcorn Road CSO Trent And Mersey Canal 3 1 h 40m -
United Utilities Opp River Street CSO River Bollin 1 0 h 40m -
United Utilities Hawthorn Lane Clvrt'D River Bollin 2 0 h 22m -
United Utilities Eagle Brow CSO (489KT) River Mersey 1 0 h 10m -
United Utilities Rear of 68 Whitbarrow Road M/Chester Ship Canal 1 0 h 4m -
United Utilities Woodlands Grove CSO Trent 1 0 h 2m -
United Utilities Rear of 68 Whitbarrow Road M/Chester Ship Canal 1 0 h 2m -
United Utilities Manchester Road (Lostock) CSO Wincham Brook 0 0 h 0 h
United Utilities Oughtrington Lane CSO Bridgewater Canal 0 0 h -
United Utilities Anderton Field No. 28 Marbury Brook 0 0 h -
United Utilities Mobberley Road Combined Sewer Overflow (Site ID 272GZ) (MAC0122) Birkin Brook 0 0 h -
United Utilities Wilmslow Park South Combined Sewer Overflow (Site ID 272YI) (MAC0047) River Bollin 0 0 h 84 h
United Utilities Sagars Rd CSO (279DF) Dean Brook 0 0 h -
United Utilities Manchester Road (Lostock) CSO Wincham Brook 0 0 h -
United Utilities Poplar Cottages CSO Kid Brook Via Sws 0 0 h -
United Utilities Reeman Court (Manhole H4) River Dean 0 0 h -
United Utilities Sagars Rd CSO (279DF) Dean Brook 0 0 h -
United Utilities Anderton Field No. 28 Marbury Brook 0 0 h -
United Utilities Hoo Green WwTW Tabley Brook 0 0 h -
United Utilities 42 Runcorn Road CSO Weaver Navigation 0 0 h 2,279 h
United Utilities Dean Road CSO River Dean 0 0 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.