River Alyn polluted by sewage 783 times in 2024 - lasting 3,961 hours

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Contains OS Data © Crown copyright & database right 2021-2024
© Top of the Poops 2021-2024
Totals for River Alyn in 2024
20 Sites polluted by Dwr Cymru Welsh Water
783 sewage dumps
3,961 h duration
That's 5.5 months. On average 2.1 times a day

Pollution Summary 2024

Here are all the reported sewage overflow totals for River Alyn in 2024. Sometimes sewage can be being dumped for months at a time.

These numbers are very slightly different from the Rivers page. We're working on it.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Dwr Cymru Welsh Water River Alyn MOLD WwTW 106 1,079 99.6
Dwr Cymru Welsh Water River Alyn GRESFORD STW 70 649 99.9
Dwr Cymru Welsh Water River Alyn CSO Mynydd Isa Chambers Lane/Mercia Drive Nr 2 103 393 97.6
Dwr Cymru Welsh Water River Alyn CSO at Mynydd Isa Wylfa Hill 79 386 99.9
Dwr Cymru Welsh Water River Alyn LLANARMON-YN-IAL STW 84 352 99.9
Dwr Cymru Welsh Water River Alyn Bridge Inn Pumping Station 28 305 79.8
Dwr Cymru Welsh Water River Alyn Cwmafan RFC CSO 40 297 97.4
Dwr Cymru Welsh Water River Alyn llay Chapel Lane CSO, opposite Garden Centre 56 180 97.2
Dwr Cymru Welsh Water River Alyn CAERGWRLE - RHYDDYN HILL ROAD CSO 49 128 99.9
Dwr Cymru Welsh Water River Alyn CSO at Mold Committee's Sewerage System 39 40 99.9
Dwr Cymru Welsh Water River Alyn Llanarmon yn Ial WwTW (Storm) 7 33 100
Dwr Cymru Welsh Water River Alyn PONTBLYDDYN NO 1 PUMPING STATION 8 26 99.9
Dwr Cymru Welsh Water River Alyn CSO at Mold Gladstone St/Glan Yr Afon Rd 20 17 98.7
Dwr Cymru Welsh Water River Alyn Pandy SPS, Wrexham 11 17 99.8
Dwr Cymru Welsh Water River Alyn HOPE SARN LANE CSO 36 16 98.3
Dwr Cymru Welsh Water River Alyn Mold Gas Lane CSO 21 15 98.7
Dwr Cymru Welsh Water River Alyn Mold Football Club Drice CSO 8 13 98.3
Dwr Cymru Welsh Water River Alyn Mold Old St Davids Lane/Bridge St CSO 6 6 98.4
Dwr Cymru Welsh Water River Alyn Cefn y Bedd PS 10 3 99.5
Dwr Cymru Welsh Water River Alyn Mold Bryn Coch Lane/Lon Y Parc CSO 2 0 98.2
Dwr Cymru Welsh Water River Alyn Mold Argoed CSO 0 0 99.2

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.