Clwyd North was polluted by sewage 928 times in 2024
lasting 5,265 hours
- but monitoring was disabled in some locations, so could be more

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Contains OS Data © Crown copyright & database right 2021-2024
© Top of the Poops 2021-2024
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✔ means we have experimental daily data since 2023
Totals for Clwyd North in 2024
33 Sites polluted by Dwr Cymru Welsh Water
928 sewage dumps
5,265 h duration
That's 7.31 months. On average 2.5 times a day
Change Over Time
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Constituencies near Clwyd North

Pollution Summary 2024

Here are all the reported sewage overflow totals for Clwyd North in 2024. 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 constituency 1 of the total 40 CSO locations had reporting enabled for less than half the year, of which 1 had zero reporting.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Dwr Cymru Welsh Water Coastal Waters PENSARN SPS ABERGELE STORM 103 981 99.9
Dwr Cymru Welsh Water Coastal Waters - Liverpool Bay RHYL (KINMEL BAY) WWTW KINMEL BAY 64 682 99.9
Dwr Cymru Welsh Water Penrhyn Bay CHURCH RD PS CHURCH RD RHOS ON SEA 59 641 99.9
Dwr Cymru Welsh Water River Clwyd DENBIGH WWTW 58 636 99.5
Dwr Cymru Welsh Water Liverpool Bay LLANDDULAS PS LLANDULAS 50 628 97.3
Dwr Cymru Welsh Water Bodelwyddan Drain BODELWYDDAN MAIN SPS 41 237 99.9
Dwr Cymru Welsh Water River Ystrad RUTHIN ROAD ROUNDABOUT CSO DENBIGH 40 160 99.9
Dwr Cymru Welsh Water Clwyd Plas Yn Green CSO 24 160 99.9
Dwr Cymru Welsh Water Colwyn Bay Old Colwyn Queens Road CSO 21 153 98.7
Dwr Cymru Welsh Water River Meirchion HENLLAN STW 48 102 100
Dwr Cymru Welsh Water Colwyn Bay BEACH ROAD CSO BEACH RD COLWYN BAY 35 95 89.5
Dwr Cymru Welsh Water Henllan Brook Dalar Wen Sewage Pumping Station 52 92 99.9
Dwr Cymru Welsh Water Coastal Waters COVENTRY CAMP SPS STORM 30 89 99.9
Dwr Cymru Welsh Water River Meirchion HENLLAN STW 32 83 100
Dwr Cymru Welsh Water Coastal Waters/Irish Sea WESTBOURNE AVENUE PUMPING STATION 11 83 99.8
Dwr Cymru Welsh Water Henllan Brook Panton Hall CSO 44 79 97.8
Dwr Cymru Welsh Water Ffynnon Y Ddol Channel MAES Y LLAN CSO 14 78 96.8
Dwr Cymru Welsh Water River Clwyd Rhuddlan Wastewater Treatment Works Storm Tanks 22 45 99.3
Dwr Cymru Welsh Water River Dulas Rhyd Y Foel PS 15 41 99.9
Dwr Cymru Welsh Water River Elwy St Asaph Roe Parc CSO 5 29 95.9
Dwr Cymru Welsh Water Rhyl Cut Coast Road PS Rhyl 31 25 97.1
Dwr Cymru Welsh Water Ffynnon Y Ddol Channel KERFOOT CARAVAN PARK CSO 5 25 99.7
Dwr Cymru Welsh Water R Dee RHUDDLAN NETWORK TANK CSO 5 23 99.8
Dwr Cymru Welsh Water River Gele Berthglyd Combined Sewer Overflow 14 20 98.5
Dwr Cymru Welsh Water Unnamed Drain To Ricer Clwyd Trefnant Village CSO 14 15 98.5
Dwr Cymru Welsh Water Colwyn Bay Old Colwyn Beach Rd 43 15 99
Dwr Cymru Welsh Water River Clwyd CSO AT GAMEKEEPER PH, LOWER STREET, ST ASAPH 7 14 99.9
Dwr Cymru Welsh Water Nant Padrig Brondyffyn CSO 9 10 85.8
Dwr Cymru Welsh Water Coastal Waters/Irish Sea WESTBOURNE AVENUE CSO NO.2 22 9 98.8
Dwr Cymru Welsh Water Nant Y Flynnon Llawr Pentre CSO (Near Beach Road) 6 2 99.4
Dwr Cymru Welsh Water River Ffyddion Fford Aber CSO 2 0 98.9
Dwr Cymru Welsh Water Rhyl Cut TY NEWYDD PUMPING STATION 1 0 99.9
Dwr Cymru Welsh Water Henllan Brook Abbey Road CSO 1 0 94.9
Dwr Cymru Welsh Water River Dulas LLANDULAS MILL ST CSO , , 0 0 0
Dwr Cymru Welsh Water Rhyl Cut CLIFTON PARK CSO NO.2 0 0 82.3
Dwr Cymru Welsh Water Henllan Brook Via Surface Water Sewer Henllan Street CSO 0 0 98.9
Dwr Cymru Welsh Water Colwyn Bay MARINE RD CSO MARINE RD COLWYN BAY 0 0 58.5
Dwr Cymru Welsh Water Rhyl Cut CLIFTON PARK ROAD CSO NO.1 0 0 96.7
Dwr Cymru Welsh Water Coastal Waters - Irish Sea LLYSFAEN 0 0 98.6
Dwr Cymru Welsh Water Henllan Brook Frongoch (Rear of Magistrates Court) CSO 0 0 93

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. This 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.