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Alyn and Deeside - Live Sewage

Polluted by sewage 3,320 hours in 2026 so far..

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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 Alyn and Deeside so far for 2026. It is an estimate, based on very poor quality live data from the Water Companies. The water companies report their sewage to the Environment Agency every year in April. You can see the last reported year in the other page

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 Alyn and Deeside

Daily Data

Jan - 789 hours
Feb - 1,466 hours
Mar - 281 hours
Apr - 109 hours
May - 414 hours
Jun - 256 hours
Jul - 0 hours
Aug - 2 hours
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 Spring Street Connahs Quay Overflow Wepra Brook 116 1,220h 27m -
Dwr Cymru Welsh Water Saltney Sandy Lane Storm Overflow Balderton Brook 70 833h 34m -
Dwr Cymru Welsh Water Penyffordd WwTW Storm Overflow Black Brook 28 316h 30m -
Dwr Cymru Welsh Water Padeswood Road Buckley Storm Overflow Foundry Drain 30 255h 45m -
Dwr Cymru Welsh Water Broughton Mills Road Bretton Storm Overflow Higher Ferry Drain 15 136h 30m -
Dwr Cymru Welsh Water Flint WwTW Storm Overflow River Dee Estuary 13 94h 5m -
Dwr Cymru Welsh Water Treuddyn WwTW Storm Overflow Byr Brook 12 72h 30m -
Dwr Cymru Welsh Water Shotton Ash Grove Storm Overflow River Dee 20 62h 30m -
Dwr Cymru Welsh Water Dobshill Storm Overflow Unnamed Tributary of Broughton Brook 4 50h 45m -
Dwr Cymru Welsh Water Maes Gwyn Storm Overflow Surface Water 13 42h 26m -
Dwr Cymru Welsh Water Buckley Ty Gwyn Storm Overflow Black Brook 5 36h 21m -
Dwr Cymru Welsh Water East of railway Cefn Y Bedd Storm Overflow River Alyn 10 35h 58m -
Dwr Cymru Welsh Water Wood Lane Hawarden Storm Overflow Broughton Brook 10 28h 45m -
Dwr Cymru Welsh Water Drury Lane Storm Overflow Tributary of Broughton Brook 14 28h 35m -
Dwr Cymru Welsh Water Higher Kinnerton Storm Overflow Tributary of the River Dee 3 25h 15m -
Dwr Cymru Welsh Water Mancot Lane Mancot Storm Overflow Queensferry Ditch 3 21h 30m -
Dwr Cymru Welsh Water Queensferry WwTW Storm Overflow River Dee 3 18h 15m -
Dwr Cymru Welsh Water Dee Cottages Storm Overflow River Dee 2 12h 30m -
Dwr Cymru Welsh Water Bagillt West Storm Overflow Dee Estuary 8 10h 30m -
Dwr Cymru Welsh Water White Farm Road Buckley Overflow Tributary of Wepre Brook 2 5h 15m -
Dwr Cymru Welsh Water Castle Road Flint Overflow River Dee Estuary 7 4h 30m -
Dwr Cymru Welsh Water Flint Mountain Storm Overflow Pentre Ffwrdan Stream 9 3h 45m -
Dwr Cymru Welsh Water Church Street Connahs Quay Storm Overflow Golflyn Brook 1 2h -
Dwr Cymru Welsh Water Liverpool Road Buckley Storm Overflow New Inn Brook 2 0h 45m -
Dwr Cymru Welsh Water Merllyn Lane Bagillt Storm Overflow Unnamed Watercourse 2 0h 33m -
Dwr Cymru Welsh Water Aberllanerch Drive Storm Overflow Nant Alltami 1 0h 30m -
Dwr Cymru Welsh Water Sarn Lane Hope Storm Overflow River Alyn 1 0h 15m -
Dwr Cymru Welsh Water Upper Bryn Road Connahs Quay Storm Overflow River Dee 1 0h 13m -
Dwr Cymru Welsh Water Phoenix Street Sandycroft Storm Overflow Broughton Brook 0 0h -
Dwr Cymru Welsh Water Bridge Street Connahs Quay Storm Overflow Wepre Brook 0 0h -
Dwr Cymru Welsh Water Dee Road Connahs Quay Overflow Nant Gwepra 0 0h -
Dwr Cymru Welsh Water Station Road Bagillt Storm Overflow Dee Estuary 0 0h -
Dwr Cymru Welsh Water Cestrian Street Connah's Quay Storm Overflow River Dee 0 0h -
Dwr Cymru Welsh Water Hope WwTW Storm Overflow River Alyn 0 0h -
Dwr Cymru Welsh Water Bridge Street Saltney Storm Overflow Balderton Brook 0 0h -
Dwr Cymru Welsh Water Linden Avenue Storm Overflow River Dee 0 0h -
Dwr Cymru Welsh Water Hope Cymau Storm Overflow Afon Cegidog 0 0h -
Dwr Cymru Welsh Water Factory Road Sandycroft Storm Overflow Sandycroft Drain 0 0h -
Dwr Cymru Welsh Water The Meadows Flint Overflow Swinchiard Brook 0 0h -
Dwr Cymru Welsh Water Pont Y Bodkin Lower Storm Overflow Byr Brook 0 0h -
Dwr Cymru Welsh Water Oakenholt Main Storm Overflow Pentre Ffwrdan Stream 0 0h -
Dwr Cymru Welsh Water Greenacre Drive Bagillt Storm Overflow Ditch 0 0h -
Dwr Cymru Welsh Water Pontybodkin Main Storm Overflow Nant Byr 0 0h -
Dwr Cymru Welsh Water New Brighton Road Bagillt Overflow Unnamed Watercourse discharging to the River Dee 0 0h -
Dwr Cymru Welsh Water Old London Road Bagillt Storm Overflow Unnamed stream 0 0h -
Dwr Cymru Welsh Water Broughton Mills Road and Chester Road Bretton Storm Overflow Bretton Drain 0 0h -
Dwr Cymru Welsh Water Station Road Bagillt Storm Overflow River Dee 0 0h -
Dwr Cymru Welsh Water Dock Road Connahs Quay Storm Overflow River Dee 0 0h -
Dwr Cymru Welsh Water Rhyddyn Hill Caergwrle Storm Overflow River Alyn 0 0h -
Dwr Cymru Welsh Water Kelsterton Road Connah's Quay Storm Overflow Kelsterton Brook 0 0h -
Dwr Cymru Welsh Water West View Penyffordd Storm Overflow Black Brook 0 0h -
Dwr Cymru Welsh Water Manor Drive Storm Overflow Unnamed Watercourse 0 0h -
Dwr Cymru Welsh Water Near Spring Street Connahs Quay Storm Overflow Wepre Brook 0 0h -
Dwr Cymru Welsh Water Hope Street Storm Overflow River Alyn 0 0h -
Dwr Cymru Welsh Water North of Evans Street Flint Overflow Swinchiard Brook 0 0h -
Dwr Cymru Welsh Water Welsh Road Roundabout Storm Overflow Manor Drain 0 0h -

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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© 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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