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Chester South and Eddisbury - 2025 Sewage

Polluted by sewage 4,222 hours in 2025 , monitoring offline 14,412 hours , potential overflows 795 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 Chester South and Eddisbury 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 Chester South and Eddisbury

Daily Data

Jan - 1,218 hours , 321 offline
Feb - 95 hours , 1 potential
Mar - 46 hours , 1,028 offline
Apr - 66 hours , 127 potential
May - 142 hours , 2 potential
Jun - 79 hours , 1,440 offline
Jul - 104 hours , 512 potential
Aug - 5 hours , 1,603 offline
Sept - 394 hours , 89 potential
Oct - 163 hours , 0 potential
Nov - 848 hours , 13 potential
Dec - 1,051 hours , 48 potential
Daily data is experimental and data is not guaranteed to be accurate. Please inform us of any issue, we will fix.
Please note: We don't have rainfall data for Wales. If you know where to source it please let us know!
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Dwr Cymru Welsh Water Lavister Storm Overflow Pulford Brook 68 482 h 15m -
United Utilities CREWE WwTW River Weaver 40 363 h 19m -
United Utilities CREWE WwTW River Weaver 22 307 h 20m -
United Utilities KINGSLEY WwTW Crowton Brook 26 210 h 58m 131 h
Dwr Cymru Welsh Water Tattenhall WwTW Storm Overflow Golborne Brook 43 196 h 18m -
Dwr Cymru Welsh Water Lavister WwTW Overflow Pulford Brook 31 195 h 30m -
Dwr Cymru Welsh Water Dingle Bank Chester Storm Overflow Tributary of the River Dee 73 195 h 29m -
United Utilities TARPORLEY WwTW Wettenhall Brook 36 172 h 12m 78 h
United Utilities Oakmere Pumping Station Fir Brook 20 166 h 59m -
United Utilities RUSHTON WwTW Wettenhall Brook 9 165 h 0 h
Dwr Cymru Welsh Water Malpas Sunnyside Overflow Unnamed Watercourse 14 152 h 45m -
United Utilities COTEBROOK SO Sandyford Brook 19 152 h 35m 6 h
United Utilities BULKELEY WwTW River Weaver 18 126 h 57m 865 h
Dwr Cymru Welsh Water Church Lane Aldford Storm Overflow Aldford Brook 34 122 h 14m -
United Utilities TARVIN WwTW Milton Brook 30 107 h 19m 134 h
United Utilities Off Roddy Lane CSO Crowton Brook 32 102 h 12m 189 h
United Utilities Cuddington Pumping Station Cuddington 14 83 h 39m -
Dwr Cymru Welsh Water Saighton WwTW Storm Overflow Tributary of Powsey Brook 39 81 h 36m -
United Utilities BUNBURY WwTW River Gowy 34 76 h 45m -
United Utilities Ravensmoor PS River Weaver 13 68 h 38m 5,494 h
Dwr Cymru Welsh Water Mount Pleasant Chester Overflow River Dee 49 67 h 59m -
United Utilities TARPORLEY WwTW Wettenhall Brook 13 61 h 43m -
United Utilities Moor Lane PS / Rowton A41 CSO Caldy Brook River Dee 8 55 h 14m -
Dwr Cymru Welsh Water Mill Street Chester Storm Overflow River Dee 18 44 h 42m -
United Utilities Vicarage Road CSO Swanback Mill Brook 14 43 h 52m 9 h
United Utilities Newhall PS Sales Brook 10 38 h 44m 514 h
United Utilities Wrenbury Hall Road PS Shropshire Union Canal 8 28 h 3m -
United Utilities TARVIN WwTW Milton Brook 3 26 h 47m -
United Utilities WRENBURY WWTW River Weaver 10 26 h 4m -
United Utilities WEAVERHAM WwTW River Weaver 18 24 h 32m -
Dwr Cymru Welsh Water Pepper Street Whitchurch Storm Overflow Bache Brook 13 23 h -
United Utilities BUNBURY WwTW River Gowy 11 20 h 10m -
United Utilities Vicarage Road CSO Swanback Mill Brook 7 17 h 42m -
Dwr Cymru Welsh Water Whitchurch Road Storm Overflow Caldy Brook 9 17 h 30m -
United Utilities Off Roddy Lane CSO Crowton Brook 7 15 h 44m -
United Utilities Oakmere Pumping Station Fir Brook 4 15 h 30m -
United Utilities WEAVERHAM WwTW River Weaver 7 15 h 25m -
United Utilities Cuddington Lane (adjacent Pipe Bridge) CSO Cuddington Brook 14 15 h 20m -
United Utilities Acton Bridge WwTW Trout Beck 13 13 h 40m 83 h
United Utilities BULKELEY WwTW River Weaver 2 12 h 55m -
United Utilities Cuddington Pumping Station Cuddington 3 11 h 16m -
United Utilities KINGSLEY WwTW Crowton Brook 1 9 h 33m -
Dwr Cymru Welsh Water Chester Grosvenor Bridge Storm Overflow River Dee 8 8 h 45m -
United Utilities Bridge Street CSO Wybunbury Brook 6 8 h 20m 4 h
Dwr Cymru Welsh Water Malpas WwTW Storm Overflow Unnamed Tributary of Wych Brook 9 8 h 2m -
United Utilities Bridge Street CSO Wybunbury Brook 5 7 h 8m 30 h
Dwr Cymru Welsh Water Chester Street Storm Overflow River Dee 5 6 h 45m -
United Utilities TARPORLEY WwTW Wettenhall Brook 8 6 h 35m 0 h
United Utilities Acton Bridge WwTW Trout Beck 14 6 h 10m 1,100 h
United Utilities Cuddington Lane (Woods) CSO Cuddington Brook 4 5 h 34m 36 h
United Utilities KEEPERS LANE CSO River Weaver 7 5 h 8m 0 h
United Utilities COTEBROOK SO Sandyford Brook 2 4 h 39m -
United Utilities WRENBURY WWTW River Weaver 2 3 h 52m -
United Utilities Newhall PS Sales Brook 2 2 h 30m -
Dwr Cymru Welsh Water Handbridge Chester Storm Overflow River Dee 5 2 h 29m -
Dwr Cymru Welsh Water Tilston WwTW Storm Overflow Carden Brook 5 2 h 13m -
Dwr Cymru Welsh Water Curzon Park North Chester Storm Overflow Tributary of Afon Dwyryd 3 1 h 45m -
United Utilities Wrenbury Hall Road PS Shropshire Union Canal 1 1 h 42m -
United Utilities WASTE LANE CSO Cuddington Brook 2 1 h 22m 39 h
Dwr Cymru Welsh Water Chester Eccleston Overflow River Dee 1 1 h -
United Utilities WEAVERHAM WwTW River Weaver 3 0 h 56m -
United Utilities Cuddington Lane (adjacent Pipe Bridge) CSO Cuddington Brook 2 0 h 48m 0 h
United Utilities Sandford Banks PS River Weaver 1 0 h 32m -
Dwr Cymru Welsh Water Malpas Well Street Storm Overflow Unnamed Watercourse 2 0 h 30m -
United Utilities WEAVERHAM WwTW River Weaver 1 0 h 26m -
United Utilities (In Scout Hut) Owley Road CSO River Weaver 0 0 h -
Dwr Cymru Welsh Water Lache Lane Chester Storm Overflow Balderton Brook 0 0 h -
Dwr Cymru Welsh Water The Dingle Chester Storm Overflow River Dee 0 0 h -
Dwr Cymru Welsh Water Chester Huntington Rake & Pickle Ph Nra Overflow Caldy Brook 0 0 h -
United Utilities (In Scout Hut) Owley Road CSO River Weaver 0 0 h -
United Utilities RUSHTON WwTW Wettenhall Brook 0 0 h 0 h
United Utilities Ravensmoor PS River Weaver 0 0 h 5,893 h
United Utilities Moor Lane PS / Rowton A41 CSO Caldy Brook River Dee 0 0 h 592 h
United Utilities TARPORLEY WwTW Wettenhall Brook 0 0 h -
United Utilities Cuddington Lane (Woods) CSO Cuddington Brook 0 0 h -
Dwr Cymru Welsh Water Christleton Plough Lane Overflow Unnamed Watercourse 0 0 h -
Dwr Cymru Welsh Water Pembroke Close Chester Storm Overflow River Dee 0 0 h -
United Utilities KEEPERS LANE CSO River Weaver 0 0 h -
Dwr Cymru Welsh Water Old Woman's Lane Christleton Storm Overflow Tributary of Caldy Brook 0 0 h -
United Utilities WASTE LANE CSO Cuddington Brook 0 0 h -
Dwr Cymru Welsh Water Balderton Storm Overflow Tributary of Balderton Brook 0 0 h -
United Utilities Sandford Banks PS River Weaver 0 0 h -
Dwr Cymru Welsh Water Chester Green Bank Road Storm Overflow River Dee 0 0 h -
Dwr Cymru Welsh Water Tattenhall Millbrook Park Verge Overflow Millbrook 0 0 h -
Dwr Cymru Welsh Water Sandy Lane Storm Overflow River Dee 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.

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Analysing sewage pollution by the Water Industry

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© Openstreetmap contributors, Contains OS data © Crown copyright and database right 2021-2025,
Contains Water UK National Storm Overflow Hub Data CC-BY-SA 4.0 and analysis © 2025 Top-Of-The-Poops

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