Top of the Poops | Constituency Sewage Map - 2025 Data| Brecon, Radnor and Cwm Tawe

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You're looking at the totals that we have calculated for sewage in Brecon, Radnor and Cwm Tawe 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.

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 Brecon, Radnor and Cwm Tawe in 2025

Sewage31,732 hours

Monitoring offline0 hours

Potential pollution0 hours

Storm overflows114

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Company	Site Name	Receiving Waterway	Overflow Days	Total Duration (hours)	Offline/Potential Pollution
Dwr Cymru Welsh Water	Llanwrtyd Wells Storm Overflow	Afon Irfon	117	2,141h 20m	-
Dwr Cymru Welsh Water	Trebanos WwTW Storm Overflow	River Tawe	108	2,094h 12m	-
Dwr Cymru Welsh Water	Graig Road Bridge Storm Overflow	River Garnant	146	1,813h 50m	-
Dwr Cymru Welsh Water	Brecon Road Cae'r Lan Storm Overflow	Tributary of Afon Tawe	117	1,635h	-
Dwr Cymru Welsh Water	Trecastle WwTW Storm Overflow	Nant Logyn	121	1,597h 44m	-
Dwr Cymru Welsh Water	Pontneddfechan WwTW Storm Overflow	River Mellte	158	1,349h 39m	-
Dwr Cymru Welsh Water	Sennybridge WwTW Storm Overflow	River Usk	94	1,114h 46m	-
Dwr Cymru Welsh Water	A4068 over River Cwmtwrch Uchaf Storm Overflow	Afon Twrch	81	1,076h 40m	-
Dwr Cymru Welsh Water	Brecon WwTW Storm Overflow	River Usk	63	1,019h 22m	-
Dwr Cymru Welsh Water	Llandrindod Wells WwTW Storm Overflow	River Ithon	71	896h 43m	-
Dwr Cymru Welsh Water	Bethel Road Cwm-twrch Isaf Overflow	Afon Twrch	81	868h 59m	-
Dwr Cymru Welsh Water	Trebanos The Grove Storm Overflow	River Tawe	78	837h 53m	-
Dwr Cymru Welsh Water	Beulah WwTW Storm Overflow	Afon Cammarch	58	768h 13m	-
Dwr Cymru Welsh Water	Bwlch WwTW Storm Overflow	River Usk	73	676h 23m	-
Dwr Cymru Welsh Water	Sennybridge Storm Overflow	River Usk	33	637h 45m	-
Dwr Cymru Welsh Water	Herbert Street Pontardawe Storm Overflow	Upper Clydach	86	628h 10m	-
Dwr Cymru Welsh Water	Gwaun Cae Gurwen Graig Road Storm Overflow	River Amman	69	616h 8m	-
Dwr Cymru Welsh Water	Crossgates WwTW Storm Overflow	Tributary of Afon Eithon	54	611h 41m	-
Dwr Cymru Welsh Water	Station Road Caehopkin Storm Overflow	Nant Helen	43	457h 55m	-
Dwr Cymru Welsh Water	Rock Park Close Llandrindod Wells Overflow	Arlais Brook	70	453h 24m	-
Dwr Cymru Welsh Water	Coelbren Storm Overflow	Unnamed Tributary of Nant Llech	71	440h 4m	-
Dwr Cymru Welsh Water	Heol Y Maes Storm Overflow	Llech Brook	58	423h 59m	-
Dwr Cymru Welsh Water	Howey WwTW Storm Overflow	Howey Brook	44	412h 47m	-
Dwr Cymru Welsh Water	Abernant Lake Storm Overflow	Afon Irfon	54	391h 14m	-
Dwr Cymru Welsh Water	Station Road Rear Abercraf Storm Overflow	River Tawe	50	385h 34m	-
Dwr Cymru Welsh Water	Pontardawe Leisure Centre Storm Overflow	River Tawe	68	364h 11m	-
Dwr Cymru Welsh Water	Ystradgynlais WwTW Wetland Return Storm Overflow	River Tawe	25	353h 15m	-
Dwr Cymru Welsh Water	Min-Y-Rhos Footbridge Storm Overflow	River Tawe	50	351h 5m	-
Dwr Cymru Welsh Water	Llanddewi Toll House Storm Overflow	River Ithon	48	344h 14m	-
Dwr Cymru Welsh Water	Southwest of Glyn Road Storm Overflow	River Amman	46	336h 43m	-
Dwr Cymru Welsh Water	Rhayader WwTW Tank Storm Overflow	Tributary of Afon Gwy	36	265h 3m	-
Dwr Cymru Welsh Water	Crickhowell Garn 1 Storm Overflow	River Usk	41	263h 20m	-
Dwr Cymru Welsh Water	Ger-Yr-Afon Storm Overflow	Nant Hir	47	236h 35m	-
Dwr Cymru Welsh Water	The Strand Storm Overflow	River Wye	49	217h 53m	-
Dwr Cymru Welsh Water	Ddole Road Llandrindod Wells Overflow	River Ithon	40	217h 50m	-
Dwr Cymru Welsh Water	Heol Glantawe Ystradgynlais No 2 Storm Overflow	River Tawe	56	217h 17m	-
Dwr Cymru Welsh Water	Ystradgynlais Cwmtwrch Bridge Street Storm Overflow	Afon Twrch	35	210h 54m	-
Dwr Cymru Welsh Water	Lamb Bridge Storm Overflow	Nant Llynfell	34	206h 39m	-
Dwr Cymru Welsh Water	Cefn Gorwydd WwTW Storm Overflow	Afon Irfon	43	198h 33m	-
Dwr Cymru Welsh Water	Ynyscedwyn Road Ystradgynlais Storm Overflow	River Tawe	25	194h 33m	-
Dwr Cymru Welsh Water	Dolwen Fields Storm Overflow	River Ithon	41	193h 15m	-
Dwr Cymru Welsh Water	Llangunllo Storm Overflow	River Llugwy	21	191h 14m	-
Dwr Cymru Welsh Water	Ithon Road Storm Overflow	River Ithon	51	187h 58m	-
Dwr Cymru Welsh Water	Unknown	Unknown	11	185h 15m	-
Dwr Cymru Welsh Water	Llanelwedd Storm Overflow	Henllan Brook	26	180h 57m	-
Dwr Cymru Welsh Water	NCN437 Cwmllynfell Overflow	River Llynfell	50	179h 33m	-
Dwr Cymru Welsh Water	James Street Pontardawe Storm Overflow	Upper Clydach River	54	177h 41m	-
Dwr Cymru Welsh Water	West of Long Street Penrhos Storm Overflow	River Tawe	28	163h 59m	-
Dwr Cymru Welsh Water	A4067 and Ynysmeudw Road Roundabout Storm Overflow	River Tawe	29	163h 4m	-
Dwr Cymru Welsh Water	Talgarth WwTW Storm Overflow	River Llynfi	18	155h 45m	-
Dwr Cymru Welsh Water	Legar Storm Overflow	River Usk	39	154h 4m	-
Dwr Cymru Welsh Water	Bryn Bach Road Storm Overflow	River Amman	40	150h 40m	-
Dwr Cymru Welsh Water	Talybont WwTW Storm Overflow	Caerfanell	53	148h 26m	-
Dwr Cymru Welsh Water	Church Lane Storm Overflow	Tributary of Afon Gwy	26	130h 22m	-
Dwr Cymru Welsh Water	Caer-Lan Abercraf Storm Overflow	River Tawe	16	126h 6m	-
Dwr Cymru Welsh Water	South of A4067 Abercraf Storm Overflow	River Tawe	39	122h 37m	-
Dwr Cymru Welsh Water	Glasbury WwTW Storm Overflow	River Wye	14	119h 35m	-
Dwr Cymru Welsh Water	Llangynidr Coed-Yr-Ynys Storm Overflow	River Usk	27	110h 45m	-
Dwr Cymru Welsh Water	Builth Wells WwTW Storm Overflow	River Wye	22	103h 30m	-
Dwr Cymru Welsh Water	Canal Road Brecon Storm Overflow	River Usk	51	99h 57m	-
Dwr Cymru Welsh Water	Ystalyfera Glanyrafon Road Storm Overflow	River Tawe	28	98h	-
Dwr Cymru Welsh Water	Lon Catwg Storm Overflow	Unnamed Tributary of the Nant Gelli-Nedd	32	85h 57m	-
Dwr Cymru Welsh Water	East of Brecon WwTW Storm Overflow	River Usk	20	83h 10m	-
Dwr Cymru Welsh Water	Penybont Overflow	River Ithon	12	74h	-
Dwr Cymru Welsh Water	Bronllys Storm Overflow	Unnamed Watercourse	38	71h 35m	-
Dwr Cymru Welsh Water	Llys Tawel Ystradgynlais Storm Overflow	River Tawe	17	70h 55m	-
Dwr Cymru Welsh Water	Three Cocks Storm Overflow	Tregoyd Brook	22	69h 36m	-
Dwr Cymru Welsh Water	Upstream of Crickhowell Garn 1 Storm Overflow	River Usk	6	64h 50m	-
Dwr Cymru Welsh Water	Rhayader WwTW Inlet Storm Overflow	River Wye	29	58h 56m	-
Dwr Cymru Welsh Water	Field West of Brecon WwTW Storm Overflow	River Usk	17	55h 38m	-
Dwr Cymru Welsh Water	Presteigne WwTW Storm Overflow	Afon Lliw	11	53h 28m	-
Dwr Cymru Welsh Water	Heol Eglwys Ystradgynlais Storm Overflow	River Tawe	23	46h 54m	-
Dwr Cymru Welsh Water	Park Lane Llandrindod Wells Storm Overflow	River Ithon	16	45h 35m	-
Dwr Cymru Welsh Water	Llangammarch Wells WwTW Storm Overflow	Afon Irfon	6	45h	-
Dwr Cymru Welsh Water	Tawe Terrace Storm Overflow	River Tawe	10	41h 42m	-
Dwr Cymru Welsh Water	Temple Street Llandrindod Wells Overflow	River Ithon	27	40h 47m	-
Dwr Cymru Welsh Water	Heol Glantawe Ystradgynlais Storm Overflow	River Afan	9	40h 36m	-
Dwr Cymru Welsh Water	Trefecca Old Railway Storm Overflow	River Llynfi	14	40h 34m	-
Dwr Cymru Welsh Water	Newbridge -on-Wye WwTW Storm Overflow	River Wye	22	37h 52m	-
Dwr Cymru Welsh Water	Broad Street Storm Overflow	River Wye	23	34h 9m	-
Dwr Cymru Welsh Water	Waurn Gyrlais Footpath Storm Overflow	Tributary of Nant Gyrlais	9	26h 42m	-
Dwr Cymru Welsh Water	Glasbury WwTW Settled Storm Overflow	River Wye	8	26h	-
Dwr Cymru Welsh Water	Llanfrynach WwTW Storm Overflow	Nant Menasgin	9	24h 31m	-
Dwr Cymru Welsh Water	Primrose Lane Lon Y Wern Storm Overflow	Nant Llechau	12	21h 14m	-
Dwr Cymru Welsh Water	Llandrindod Wells Crabtree Green Storm Overflow	River Ithon	12	15h 38m	-
Dwr Cymru Welsh Water	Talybont Cattle Market Storm Overflow	Caerfanell	9	14h 59m	-
Dwr Cymru Welsh Water	Crickhowell WwTW Storm Overflow	River Usk	2	14h	-
Dwr Cymru Welsh Water	River Tawe Godre'r Graig Storm Overflow	River Tawe	8	12h 44m	-
Dwr Cymru Welsh Water	Unknown	Unknown	1	11h 30m	-
Dwr Cymru Welsh Water	Crickhowell Garn 2 Storm Overflow	River Usk	1	8h 30m	-
Dwr Cymru Welsh Water	North Road Storm Overflow	River Wye	7	6h 40m	-
Dwr Cymru Welsh Water	Water Lane Rhayader Overflow	River Wye	3	4h 32m	-
Dwr Cymru Welsh Water	Llanwrthwl WwTW Overflow	River Wye	2	4h 29m	-
Dwr Cymru Welsh Water	Bronllys Road South Storm Overflow	River Ennig	3	2h 28m	-
Dwr Cymru Welsh Water	Erwood Overflow	Clettwr Brook	2	1h 57m	-
Dwr Cymru Welsh Water	Crai WwTW Storm Overflow	Nant Ddu	1	1h 15m	-
Dwr Cymru Welsh Water	Unknown	Unknown	1	0h 45m	-
Dwr Cymru Welsh Water	Rhayader Fields Storm Overflow	River Wye	2	0h 30m	-
Dwr Cymru Welsh Water	Brynawelon Storm Overflow	River Usk	1	0h 30m	-
Dwr Cymru Welsh Water	Wye Bridge Storm Overflow	River Wye	1	0h 29m	-
Dwr Cymru Welsh Water	Heol Gouesnou Storm Overflow	River Usk	1	0h 29m	-
Dwr Cymru Welsh Water	Gwernyfed Park Storm Overflow	Felindre Brook	1	0h 16m	-
Dwr Cymru Welsh Water	Llanyre WwTW Overflow	River Ithon	1	0h 15m	-
Dwr Cymru Welsh Water	Newgate Street Llan Faes Storm Overflow	River Usk	0	0h	-
Dwr Cymru Welsh Water	Newgate Street Brecon Storm Overflow	River Usk	0	0h	-
Dwr Cymru Welsh Water	Ford Street Storm Overflow	Afon Lliw	0	0h	-
Dwr Cymru Welsh Water	Brodawel Storm Storm Overflow	River Usk	0	0h	-
Dwr Cymru Welsh Water	Waun Capel Parc Storm Overflow	River Wye	0	0h	-
Dwr Cymru Welsh Water	Dan-y-Gollen Overflow	Grwyne Fawr	0	0h	-
Dwr Cymru Welsh Water	Bullpit Meadow Storm Overflow	River Usk	0	0h	-
Dwr Cymru Welsh Water	Llangors Overflow	River Llynfi	0	0h	-
Dwr Cymru Welsh Water	Bronllys Road North Storm Overflow	River Llynfi	0	0h	-
Dwr Cymru Welsh Water	Bridge Street Crickhowell Storm Overflow	River Usk	0	0h	-
Dwr Cymru Welsh Water	Warren Close Overflow	River Wye	0	0h	-

Brecon, Radnor and Cwm Tawe - 2025 Sewage

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Totals for Brecon, Radnor and Cwm Tawe in 2025

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