Clwyd West polluted by sewage 1,457 times in 2023 - lasting 13,844 hours
- but monitoring was disabled in some locations, so could be more

© OpenStreetMap contributors
Contains OS Data © Crown copyright & database right 2021-2023
© Top of the Poops 2021-2023
✔ means we have experimental daily data since 2023
Totals for Clwyd West in 2023
33 Sites polluted by Dwr Cymru Welsh Water
1,457 sewage dumps
13,844 h duration
That's 1.6 years! On average 4 times a day
Change Over Time

Pollution Summary 2023

Here are all the reported sewage overflow totals for Clwyd West in 2023. 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 37 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 River Dulas Settled Storm Overflow at Betws-yn-Rhos Wastewater Treatment Works 147 2,780 100
Dwr Cymru Welsh Water River Clwyd Settled Storm Sewage at Pwllglas WwTW 96 1,695 100
Dwr Cymru Welsh Water River Elwy LLANFAIRTALHAIARN STW (STORM) 100 1,560 100
Dwr Cymru Welsh Water Penrhyn Bay CHURCH RD PS CHURCH RD RHOS ON SEA 111 1,335 92.6
Dwr Cymru Welsh Water Coastal Waters PENSARN SPS ABERGELE STORM 115 1,020 99.9
Dwr Cymru Welsh Water River Clwyd RUTHIN STW (FINAL) 82 918 99.7
Dwr Cymru Welsh Water River Nug CSO at Cerrigydrudion WwTW 135 863 97.8
Dwr Cymru Welsh Water Liverpool Bay LLANDDULAS PS LLANDULAS 79 744 99.7
Dwr Cymru Welsh Water Coastal Waters - Liverpool Bay RHYL (KINMEL BAY) WWTW KINMEL BAY 65 722 99.4
Dwr Cymru Welsh Water Dwr Ial LLANFAIR DC STW 84 417 100
Dwr Cymru Welsh Water River Clwyd RUTHIN STW (SETTLED STORM) 36 417 99.2
Dwr Cymru Welsh Water River Camddwr GWYDDELWERN PS. - EMERGENCY SC 18 324 100
Dwr Cymru Welsh Water River Alyn Llanarmon yn Ial WwTW (Storm) 81 272 99.9
Dwr Cymru Welsh Water Ffynnon Y Ddol Channel KERFOOT CARAVAN PARK CSO 26 165 99.8
Dwr Cymru Welsh Water River Clwyd PWLLGLAS STW 74 134 100
Dwr Cymru Welsh Water Colwyn Bay Old Colwyn Queens Road CSO 27 115 99.6
Dwr Cymru Welsh Water Ffynnon Y Ddol Channel MAES Y LLAN CSO 9 62 93.1
Dwr Cymru Welsh Water Alun Llanferres SPS 14 60 100
Dwr Cymru Welsh Water Colwyn Bay BEACH ROAD CSO BEACH RD COLWYN BAY 36 44 80.1
Dwr Cymru Welsh Water Kinmel Bay Drain FORYD RD EMERGENCY KINMEL BAY , 3 33 100
Dwr Cymru Welsh Water River Alun LLANDEGLA CSO , , 7 33 99.9
Dwr Cymru Welsh Water River Clwyd RUTHIN STW (CSO) 8 30 100
Dwr Cymru Welsh Water River Gele Berthglyd Combined Sewer Overflow 11 22 99.8
Dwr Cymru Welsh Water Colwyn Bay Old Colwyn Beach Rd 52 21 99.7
Dwr Cymru Welsh Water River Aled Llansannan Ddol CSO 4 19 100
Dwr Cymru Welsh Water River Dulas Rhyd Y Foel PS 13 13 48.6
Dwr Cymru Welsh Water River Merddwr Pentrefoelas - CSO 9 9 99.9
Dwr Cymru Welsh Water Nant Y Flynnon Llawr Pentre CSO (Near Beach Road) 9 4 99.9
Dwr Cymru Welsh Water Nant Mawr Pentre Llanrhaedr PS 2 2 100
Dwr Cymru Welsh Water Colwyn Bay MARINE RD CSO MARINE RD COLWYN BAY 1 1 100
Dwr Cymru Welsh Water Elwy Llangernyw SPS 1 0 100
Dwr Cymru Welsh Water Nant Y Ffynnon PS OFF LLANELION ROAD COLWYN BAY 1 0 99.7
Dwr Cymru Welsh Water Coastal Waters COVENTRY CAMP SPS STORM 1 0 100
Dwr Cymru Welsh Water River Dulas LLANDULAS MILL ST CSO , , 0 0 23.4
Dwr Cymru Welsh Water Nant Y Cefn Settled Storm Overflow at Clawddnewydd Wastewater Treatment Works 0 0 99.8
Dwr Cymru Welsh Water River Dulas CSO AT BETTWYS YN RHOS SPORTS GROUND 0 0 0
Dwr Cymru Welsh Water Coastal Waters - Irish Sea LLYSFAEN 0 0 80.5

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.