Clwyd South polluted by sewage 1,547 times in 2022 - lasting 6,405 hours

© OpenStreetMap contributors
Contains OS Data © Crown copyright & database right 2021-2022
© Top of the Poops 2021-2023
✔ means we have experimental daily data for 2023
Totals for Clwyd South in 2022
45 Sites polluted by Dwr Cymru Welsh Water
1,547 sewage dumps
6,405 h duration
That's 8.9 months. On average 4.2 times a day

Pollution Summary 2022

Here are all the reported sewage overflow totals for Clwyd South in 2022. Sometimes sewage can be being dumped for months at a time.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Dwr Cymru Welsh Water River Clywedog Gwynfryn CSO 150 1,629 92.5
Dwr Cymru Welsh Water River Dee Corwen WwTW Settled Storm 55 772 100
Dwr Cymru Welsh Water River Ceiriog CSO at Dolywern & Llwynmawr STW 128 524 100
Dwr Cymru Welsh Water River Dee Chirk O/S 24 Offa St CSO 47 353 99.9
Dwr Cymru Welsh Water River Dee Settled Storm Overflow at Bangor-on-Dee Wastewater Treatment Works 48 337 100
Dwr Cymru Welsh Water River Dee Cefn Mawr STW Heol Berwyn Cefn Mawr Settled Storm 48 330 99.9
Dwr Cymru Welsh Water River Gwenfro Southsea Rollers Arms - CSO 58 310 100
Dwr Cymru Welsh Water River Dee CSO at Cynwyd STW 96 297 99.9
Dwr Cymru Welsh Water River Ceiriog DOL Y WERN - CSO 50 242 95.7
Dwr Cymru Welsh Water Tref Y Nant Brook CEFN PS 53 145 99.7
Dwr Cymru Welsh Water Eitha Ruabon PS 25 139 99.8
Dwr Cymru Welsh Water Dee HAND HOTEL GARDENS CSO 59 136 100
Dwr Cymru Welsh Water River Dee Abbey Road CSO 41 112 100
Dwr Cymru Welsh Water River Goch Pant CSO 58 109 100
Dwr Cymru Welsh Water River Gwenfro Talwrn Road No 2 CSO 54 108 100
Dwr Cymru Welsh Water River Dee LLANGOLLEN WWTW 35 105 100
Dwr Cymru Welsh Water Dee OVERTON WWTW (STORM) 52 101 98.6
Dwr Cymru Welsh Water River Dee Rhosymedre Park Rd CSO 31 76 99.9
Dwr Cymru Welsh Water Clywedog Coedpoeth Nant PS 25 68 98.1
Dwr Cymru Welsh Water Unnamed Stream CSO At Corwen Rear Of The Pavillion 31 63 99.4
Dwr Cymru Welsh Water Nant Brook Brymbo SPS CSO 17 50 100
Dwr Cymru Welsh Water River Goch Afon Eitha CSO 59 44 99.5
Dwr Cymru Welsh Water River Clywedog Ruthin/Berse Road Coedpoeth CSO 27 42 100
Dwr Cymru Welsh Water River Gwenfro Settled Storm Overflow at Heol Y Fro 19 35 100
Dwr Cymru Welsh Water River Dee Park Avenue CSO 8 35 100
Dwr Cymru Welsh Water Tref Y Nant Brook Cefn Monsanto CSO 54 31 75.9
Dwr Cymru Welsh Water River Dee Newbridge SPS 6 29 96.8
Dwr Cymru Welsh Water River Eitha Penycae SPS 12 28 100
Dwr Cymru Welsh Water Black Spool Johnstown Combined Sewerage System CSO 26 25 99.9
Dwr Cymru Welsh Water Glanyrafon Brook Rhostyllen Bersham Colliery CSO 44 23 99.9
Dwr Cymru Welsh Water River Ceidiog Llandrillo STW PS CSO 20 14 99.9
Dwr Cymru Welsh Water River Cylflymen CSO at THE REAR OF THE TANNERY 21 13 100
Dwr Cymru Welsh Water Unnamed Watercourse Fford Offa CSO 21 13 98.8
Dwr Cymru Welsh Water River Ceiriog Glynceiriog Y Gammer - CSO 26 12 99.2
Dwr Cymru Welsh Water River Dee Corwen Corner Station Yard CSO 2 10 98.3
Dwr Cymru Welsh Water River Dee Eyton Grove SPS 1 9 98.1
Dwr Cymru Welsh Water Tref Y Nant Brook Trefor Isaf - CSO 12 7 100
Dwr Cymru Welsh Water Emral Brook Penley Hospital SPS 10 6 100
Dwr Cymru Welsh Water River Dee WEST STREET CSO 5 4 100
Dwr Cymru Welsh Water Gwenfro Ruthin Rd CSO, Gegin 5 1 100
Dwr Cymru Welsh Water River Dee Via Surface Water Sewer BERWYN STREET CSO 2 0 100
Dwr Cymru Welsh Water River Goch Bersham Colliery CSO 2 0 100
Dwr Cymru Welsh Water River Bradley CHIRK PS (SCREENED STROM) 2 0 100
Dwr Cymru Welsh Water River Dee CSO at Rear Hamden Way Plas Madoc 1 0 100
Dwr Cymru Welsh Water Glanyrafon Brook CSO at COLLIERY ROAD RHOSTYLLEN 1 0 100
Dwr Cymru Welsh Water Clywedog FIVE FORDS STW - SETTLED STORM 0 0 0
Dwr Cymru Welsh Water Eitha Ruabon Paddock Row CSO 0 0 100
Dwr Cymru Welsh Water Black Brook Aberderfyn CSO, Rhosllanerchrugog 0 0 0
Dwr Cymru Welsh Water Unnamed Flowing To Bradley Brook Chirk Chapel Lane CSO 0 0 100
Dwr Cymru Welsh Water River Dee Llangollen Riverside Park Printing Works CSO 0 0 87.6
Dwr Cymru Welsh Water River Gwenfro New Broughton CSO 0 0 100
Dwr Cymru Welsh Water Dee Via Surface Water Sewer And Culvert Corwen Clawdd Poncen PS 0 0 100
Dwr Cymru Welsh Water River Goch CSO at Ruabon Combined Sewerage System 0 0 99.9
Dwr Cymru Welsh Water River Dee Llangollen Chruch St CSO 0 0 0
Dwr Cymru Welsh Water River Dee Llangollen Victoria Prom Riverside CSO 0 0 99.9
Dwr Cymru Welsh Water River Dee Llangollen East St CSO 0 0 28.5
Dwr Cymru Welsh Water River Bradley CHIRK PS (SCREENED STORM) 0 0 98.7
Dwr Cymru Welsh Water River Dee Royal Hotel CSO 0 0 100
Dwr Cymru Welsh Water River Eitha Penycae West End School Field Land CSO 0 0 93.1

Data Sources & Accuracy

EDM (Event Duration Monitoring) data and Consented Discharges to Controlled Waters with Conditions from Environment Agency & Data Map Wales

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.

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