Aberafan Maesteg - 2025 Sewage

Polluted by sewage 16,784 hours in 2025 - That's 1.94 years

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Contains OS Data © Crown copyright & database right 2021-2024
© Top of the Poops 2021-2024

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You're looking at the totals that we have calculated for sewage in Aberafan Maesteg for 2025. It is an estimate, based on very poor quality live data from the Water Companies. This may not align with the 'official' reported sewage values from the water companies, which is reported in April following then end of the year - so 2025 numbers are reported in April 2026.

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Constituencies near Aberafan Maesteg

Daily Data

We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for Aberafan Maesteg, here you can see overflows in red, the darker the red, the more the CSO overflowed that day.

Each CSO has a row, the most recent data is on the right hand side.

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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Total Duration (days)
Dwr Cymru Welsh Water Lletty Brongu WwTW Storm Overflow River Llynfi 115 1,850 h 12m 77.08
Dwr Cymru Welsh Water Talbot Street Maesteg Storm Overflow River Llynfi 111 1,122 h 48m 46.75
Dwr Cymru Welsh Water Afan WwTW Storm Overflow Swansea Bay 94 1,110 h 59m 46.25
Dwr Cymru Welsh Water Abercregan Storm Overflow River Afan 60 1,057 h 30m 44.04
Dwr Cymru Welsh Water Marlas Storm Overflow River Kenfig 69 1,024 h 44m 42.67
Dwr Cymru Welsh Water Heol Tywith Maesteg Storm Overflow River Llynfi 79 751 h 55m 31.29
Dwr Cymru Welsh Water London Close Cwmafan Overflow River Afan 87 727 h 22m 30.29
Dwr Cymru Welsh Water Off Glan-yr-afon road Cwmfelin Maesteg Storm Overflow River Llynfi 95 721 h 15m 30.04
Dwr Cymru Welsh Water Gwaun Afan Storm Overflow River Afan 80 590 h 8m 24.58
Dwr Cymru Welsh Water Maesteg Row Maesteg Storm Overflow River Llynfi 115 559 h 49m 23.29
Dwr Cymru Welsh Water Caerau Road Storm Overflow River Llynfi 49 557 h 16m 23.21
Dwr Cymru Welsh Water Telecommunication Mast Cwmafan Storm Overflow River Afan 58 547 h 19m 22.79
Dwr Cymru Welsh Water Garth Heol Faen Storm Overflow Nant Y Twlc 95 526 h 52m 21.92
Dwr Cymru Welsh Water Cymmer Storm Overflow River Afan 95 501 h 15m 20.88
Dwr Cymru Welsh Water Parc-Tyn-Y-Waun Llangynwyd Storm Overflow River Llynfi 73 456 h 55m 19
Dwr Cymru Welsh Water Ton-Mawr Road Storm Overflow Afon Pelenna 59 448 h 15m 18.67
Dwr Cymru Welsh Water Cwmavon Road Cwmafan Storm Overflow Nant Cwm - Clais 75 426 h 24m 17.75
Dwr Cymru Welsh Water Newbridge Road No 2 Port Talbot Storm Overflow River Afan 42 418 h 17.42
Dwr Cymru Welsh Water Ynys Street Storm Overflow River Afan 39 318 h 9m 13.25
Dwr Cymru Welsh Water Bryngyrnos Storm Overflow Ffrwd Wyllt 73 313 h 46m 13.04
Dwr Cymru Welsh Water Hermon Road Storm Overflow River Llynfi 66 299 h 10m 12.46
Dwr Cymru Welsh Water Glyncorrwg Storm Overflow Afon Corrwg 61 272 h 30m 11.33
Dwr Cymru Welsh Water Bangor Street Nantyffyllon Storm Overflow River Llynfi 30 271 h 30m 11.29
Dwr Cymru Welsh Water Caerau Square Storm Overflow River Llynfi 69 244 h 21m 10.17
Dwr Cymru Welsh Water Duke Street Margam Storm Overflow Arnallt Brook 31 199 h 9m 8.29
Dwr Cymru Welsh Water Conduit Street Port Talbot Storm Overflow Ffrwd Wyllt 28 185 h 45m 7.71
Dwr Cymru Welsh Water Bridgend Road Maesteg Overflow River Llynfi 23 165 h 8m 6.88
Dwr Cymru Welsh Water London Terrace Cwmafan Storm Overflow River Afan 34 144 h 16m 6
Dwr Cymru Welsh Water Maesteg Bridgend Road Storm Overflow River Llynfi 29 137 h 30m 5.71
Dwr Cymru Welsh Water Ynys Y Gored Storm Overflow River Afan 40 125 h 32m 5.21
Dwr Cymru Welsh Water Pont-rhyd-y-fen Maes-y-bettws Storm Overflow Afon Pelenna 40 108 h 43m 4.5
Dwr Cymru Welsh Water Afan Way Storm Overflow River Afan 34 93 h 39m 3.88
Dwr Cymru Welsh Water Alder Terrace Storm Overflow River Afan 27 84 h 5m 3.5
Dwr Cymru Welsh Water Duffryn Afan Road Storm Overflow River Afan 19 74 h 4m 3.08
Dwr Cymru Welsh Water Cyonville Overflow River Afan 30 56 h 24m 2.33
Dwr Cymru Welsh Water Bron-y-Waun Maesteg Storm Overflow Nant Y Twlc 30 46 h 6m 1.92
Dwr Cymru Welsh Water Castle Street Maesteg Storm Overflow River Llynfi 10 45 h 32m 1.88
Dwr Cymru Welsh Water Steel Works Port Talbot Storm Overflow Swansea Bay 9 39 h 15m 1.62
Dwr Cymru Welsh Water Church Street Maesteg Storm Overflow River Llynfi 18 28 h 51m 1.17
Dwr Cymru Welsh Water Pant Bach Storm Overflow River Kenfig 4 28 h 2m 1.17
Dwr Cymru Welsh Water Giant's Grave Storm Overflow Neath Estuary 9 19 h 30m 0.79
Dwr Cymru Welsh Water Afan Street Port Talbot Storm Overflow River Afan 16 17 h 37m 0.71
Dwr Cymru Welsh Water Upper Cymmer Margam Street Storm Overflow River Afan 20 17 h 22m 0.71
Dwr Cymru Welsh Water Pwll y Glaw Cwmafan Overflow River Afan 8 10 h 6m 0.42
Dwr Cymru Welsh Water Blaengwynfi Tunnel Storm Overflow River Afan 11 9 h 12m 0.38
Dwr Cymru Welsh Water Maesteg Paddock Wood Storm Overflow River Llynfi 17 8 h 54m 0.33
Dwr Cymru Welsh Water Pontrhydyfen Viaduct Storm Overflow River Afan 11 8 h 27m 0.33
Dwr Cymru Welsh Water Heol-y-Llwyni Rear Storm Overflow Tributary of Afon Llynfi 8 6 h 23m 0.25
Dwr Cymru Welsh Water Maesteg Market Storm Overflow River Llynfi 8 3 h 41m 0.12
Dwr Cymru Welsh Water Briton Ferry Storm Overflow River Neath 2 1 h 45m 0.04
Dwr Cymru Welsh Water Morgans Terrace Playground Pontrhydyfen Storm Overflow Afon Pelenna 2 0 h 44m 0
Dwr Cymru Welsh Water Stallcourt Close Rear Storm Overflow Arnallt Brook Culvert (to Swansea Bay) 0 0 h 0
Dwr Cymru Welsh Water Heol Las Play Area Storm Overflow Sea Water 0 0 h 0
Dwr Cymru Welsh Water George's Row Neath Storm Overflow Neath Estuary 0 0 h 0
Dwr Cymru Welsh Water Lon-Y-Cariadon Storm Overflow Afon Fach 0 0 h 0
Dwr Cymru Welsh Water Unknown Unknown 0 0 h 0
Dwr Cymru Welsh Water Margam PS Prince Street Overflow Culverted Section of Arnallt Brook 0 0 h 0
Dwr Cymru Welsh Water Ty Draw Lane Overflow Sea Water 0 0 h 0

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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