Top of the Poops | Constituency Sewage Map - Live Data| Aberafan Maesteg

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View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in Aberafan Maesteg so far for 2026. It is an estimate, based on very poor quality live data from the Water Companies. The water companies report their sewage to the Environment Agency every year in April. You can see the last reported year in the other page

What's a potential overflow? If the CSO goes 'Offline' while its Overflowing, we don't know if it stopped overflowing until we get a 'Stop' event.

Totals for Aberafan Maesteg in 2026

Sewage17,420 hours

Monitoring offline0 hours

Potential pollution0 hours

Storm overflows60

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Constituencies near Aberafan Maesteg

Company	Site Name	Receiving Waterway	Overflow Days	Total Duration (hours)	Offline/Potential Pollution
Dwr Cymru Welsh Water	Lletty Brongu WwTW Storm Overflow	River Llynfi	164	2,917h 30m	-
Dwr Cymru Welsh Water	Talbot Street Maesteg Storm Overflow	River Llynfi	175	2,508h 15m	-
Dwr Cymru Welsh Water	Marlas Storm Overflow	River Kenfig	123	2,099h 30m	-
Dwr Cymru Welsh Water	Afan WwTW Storm Overflow	Swansea Bay	101	1,596h 5m	-
Dwr Cymru Welsh Water	Off Glan-yr-afon road Cwmfelin Maesteg Storm Overflow	River Llynfi	120	1,556h 6m	-
Dwr Cymru Welsh Water	Abercregan Storm Overflow	River Afan	62	1,032h 19m	-
Dwr Cymru Welsh Water	Bryngyrnos Storm Overflow	Ffrwd Wyllt	88	1,001h 3m	-
Dwr Cymru Welsh Water	Afan Way Storm Overflow	River Afan	42	758h 41m	-
Dwr Cymru Welsh Water	Garth Heol Faen Storm Overflow	Nant Y Twlc	52	746h 7m	-
Dwr Cymru Welsh Water	Heol Tywith Maesteg Storm Overflow	River Llynfi	57	417h 24m	-
Dwr Cymru Welsh Water	Ton-Mawr Road Storm Overflow	Afon Pelenna	37	256h 20m	-
Dwr Cymru Welsh Water	London Close Cwmafan Overflow	River Afan	41	243h 14m	-
Dwr Cymru Welsh Water	Ynys Y Gored Storm Overflow	River Afan	35	221h 23m	-
Dwr Cymru Welsh Water	Telecommunication Mast Cwmafan Storm Overflow	River Afan	44	212h 2m	-
Dwr Cymru Welsh Water	Bangor Street Nantyffyllon Storm Overflow	River Llynfi	13	190h 30m	-
Dwr Cymru Welsh Water	Newbridge Road No 2 Port Talbot Storm Overflow	River Afan	23	188h 59m	-
Dwr Cymru Welsh Water	Cwmavon Road Cwmafan Storm Overflow	Nant Cwm - Clais	41	187h 5m	-
Dwr Cymru Welsh Water	Cymmer Storm Overflow	River Afan	51	163h 10m	-
Dwr Cymru Welsh Water	Gwaun Afan Storm Overflow	River Afan	40	144h 53m	-
Dwr Cymru Welsh Water	Maesteg Row Maesteg Storm Overflow	River Llynfi	34	141h 58m	-
Dwr Cymru Welsh Water	Caerau Square Storm Overflow	River Llynfi	48	122h 37m	-
Dwr Cymru Welsh Water	Glyncorrwg Storm Overflow	Afon Corrwg	43	113h 51m	-
Dwr Cymru Welsh Water	Hermon Road Storm Overflow	River Llynfi	49	110h 56m	-
Dwr Cymru Welsh Water	Parc-Tyn-Y-Waun Llangynwyd Storm Overflow	River Llynfi	39	110h 32m	-
Dwr Cymru Welsh Water	Caerau Road Storm Overflow	River Llynfi	17	96h 27m	-
Dwr Cymru Welsh Water	Steel Works Port Talbot Storm Overflow	Swansea Bay	22	42h 45m	-
Dwr Cymru Welsh Water	Pont-rhyd-y-fen Maes-y-bettws Storm Overflow	Afon Pelenna	18	38h 9m	-
Dwr Cymru Welsh Water	Maesteg Bridgend Road Storm Overflow	River Llynfi	12	36h 47m	-
Dwr Cymru Welsh Water	London Terrace Cwmafan Storm Overflow	River Afan	17	31h 21m	-
Dwr Cymru Welsh Water	Conduit Street Port Talbot Storm Overflow	Ffrwd Wyllt	12	30h 45m	-
Dwr Cymru Welsh Water	Bridgend Road Maesteg Overflow	River Llynfi	8	26h 28m	-
Dwr Cymru Welsh Water	Alder Terrace Storm Overflow	River Afan	12	22h 8m	-
Dwr Cymru Welsh Water	Church Street Maesteg Storm Overflow	River Llynfi	7	8h 12m	-
Dwr Cymru Welsh Water	Cynonville Overflow	River Afan	1	5h 44m	-
Dwr Cymru Welsh Water	Cyonville Overflow	River Afan	5	5h 29m	-
Dwr Cymru Welsh Water	Blaengwynfi Tunnel Storm Overflow	River Afan	2	4h 45m	-
Dwr Cymru Welsh Water	Afan Street Port Talbot Storm Overflow	River Afan	4	4h 44m	-
Dwr Cymru Welsh Water	Castle Street Maesteg Storm Overflow	River Llynfi	2	4h 28m	-
Dwr Cymru Welsh Water	Pontrhydyfen Viaduct Storm Overflow	River Afan	2	3h 58m	-
Dwr Cymru Welsh Water	Giant's Grave Storm Overflow	Neath Estuary	3	3h 44m	-
Dwr Cymru Welsh Water	Duffryn Afan Road Storm Overflow	River Afan	3	3h 43m	-
Dwr Cymru Welsh Water	Maesteg Market Storm Overflow	River Llynfi	9	3h 29m	-
Dwr Cymru Welsh Water	Briton Ferry Storm Overflow	River Neath	1	2h 30m	-
Dwr Cymru Welsh Water	Maesteg Paddock Wood Storm Overflow	River Llynfi	7	2h 3m	-
Dwr Cymru Welsh Water	Heol-y-Llwyni Rear Storm Overflow	Tributary of Afon Llynfi	1	1h 13m	-
Dwr Cymru Welsh Water	Ynys Street Storm Overflow	River Afan	1	0h 29m	-
Dwr Cymru Welsh Water	Duke Street Margam Storm Overflow	Arnallt Brook	1	0h 15m	-
Dwr Cymru Welsh Water	Pwll y Glaw Cwmafan Overflow	River Afan	0	0h	-
Dwr Cymru Welsh Water	Stallcourt Close Rear Storm Overflow	Arnallt Brook Culvert (to Swansea Bay)	0	0h	-
Dwr Cymru Welsh Water	Upper Cymmer Margam Street Storm Overflow	River Afan	0	0h	-
Dwr Cymru Welsh Water	Lon-Y-Cariadon Storm Overflow	Afon Fach	0	0h	-
Dwr Cymru Welsh Water	Ty Draw Lane Overflow	Sea Water	0	0h	-
Dwr Cymru Welsh Water	Bron-y-Waun Maesteg Storm Overflow	Nant Y Twlc	0	0h	-
Dwr Cymru Welsh Water	Heol Las Play Area Storm Overflow	Sea Water	0	0h	-
Dwr Cymru Welsh Water	Unknown	Unknown	0	0h	-
Dwr Cymru Welsh Water	Wildbrook Estate Storm Overflow	Arnallt Brook	0	0h	-
Dwr Cymru Welsh Water	Pant Bach Storm Overflow	River Kenfig	0	0h	-
Dwr Cymru Welsh Water	Margam PS Prince Street Overflow	Culverted Section of Arnallt Brook	0	0h	-
Dwr Cymru Welsh Water	George's Row Neath Storm Overflow	Neath Estuary	0	0h	-
Dwr Cymru Welsh Water	Morgans Terrace Playground Pontrhydyfen Storm Overflow	Afon Pelenna	0	0h	-

Company

Site Name

Receiving Waterway

Overflow Days

Total Duration (hours)

Offline/Potential Pollution

Dwr Cymru Welsh Water

Lletty Brongu WwTW Storm Overflow

River Llynfi

164

2,917h 30m

Dwr Cymru Welsh Water