Top of the Poops | Constituency Sewage Map - Live 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 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 Brecon, Radnor and Cwm Tawe in 2026

Sewage28,432 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	Pontneddfechan WwTW Storm Overflow	River Mellte	214	2,940h 12m	-
Dwr Cymru Welsh Water	Trebanos WwTW Storm Overflow	River Tawe	155	2,909h 32m	-
Dwr Cymru Welsh Water	Llanwrtyd Wells Storm Overflow	Afon Irfon	119	2,086h 54m	-
Dwr Cymru Welsh Water	Brecon Road Cae'r Lan Storm Overflow	Tributary of Afon Tawe	124	1,830h 38m	-
Dwr Cymru Welsh Water	Trecastle WwTW Storm Overflow	Nant Logyn	118	1,661h 12m	-
Dwr Cymru Welsh Water	Herbert Street Pontardawe Storm Overflow	Upper Clydach	107	1,076h 32m	-
Dwr Cymru Welsh Water	Talybont WwTW Storm Overflow	Caerfanell	87	1,007h 45m	-
Dwr Cymru Welsh Water	Brecon WwTW Storm Overflow	River Usk	53	924h 2m	-
Dwr Cymru Welsh Water	A4068 over River Cwmtwrch Uchaf Storm Overflow	Afon Twrch	81	894h 8m	-
Dwr Cymru Welsh Water	Legar Storm Overflow	River Usk	67	879h 31m	-
Dwr Cymru Welsh Water	Graig Road Bridge Storm Overflow	River Garnant	72	794h 33m	-
Dwr Cymru Welsh Water	South of A4067 Abercraf Storm Overflow	River Tawe	52	780h 57m	-
Dwr Cymru Welsh Water	Llandrindod Wells WwTW Storm Overflow	River Ithon	62	723h 10m	-
Dwr Cymru Welsh Water	Crickhowell WwTW Storm Overflow	River Usk	51	690h 49m	-
Dwr Cymru Welsh Water	Bwlch WwTW Storm Overflow	River Usk	69	659h 31m	-
Dwr Cymru Welsh Water	Ystradgynlais WwTW Wetland Return Storm Overflow	River Tawe	36	616h 27m	-
Dwr Cymru Welsh Water	Sennybridge WwTW Storm Overflow	River Usk	51	517h 18m	-
Dwr Cymru Welsh Water	Llangunllo Storm Overflow	River Llugwy	27	479h 35m	-
Dwr Cymru Welsh Water	Crossgates WwTW Storm Overflow	Tributary of Afon Eithon	43	428h 28m	-
Dwr Cymru Welsh Water	Bethel Road Cwm-twrch Isaf Overflow	Afon Twrch	51	376h 8m	-
Dwr Cymru Welsh Water	Talgarth WwTW Storm Overflow	River Llynfi	35	354h 44m	-
Dwr Cymru Welsh Water	Heol Y Maes Storm Overflow	Llech Brook	66	342h 25m	-
Dwr Cymru Welsh Water	Beulah WwTW Storm Overflow	Afon Cammarch	60	305h 19m	-
Dwr Cymru Welsh Water	Gwaun Cae Gurwen Graig Road Storm Overflow	River Amman	40	290h 56m	-
Dwr Cymru Welsh Water	Station Road Caehopkin Storm Overflow	Nant Helen	44	278h	-
Dwr Cymru Welsh Water	Rock Park Close Llandrindod Wells Overflow	Arlais Brook	54	254h 34m	-
Dwr Cymru Welsh Water	Min-Y-Rhos Footbridge Storm Overflow	River Tawe	36	229h 43m	-
Dwr Cymru Welsh Water	Three Cocks Storm Overflow	Tregoyd Brook	33	229h 10m	-
Dwr Cymru Welsh Water	Howey WwTW Storm Overflow	Howey Brook	32	217h 28m	-
Dwr Cymru Welsh Water	The Strand Storm Overflow	River Wye	31	214h 46m	-
Dwr Cymru Welsh Water	Llangynidr Coed-Yr-Ynys Storm Overflow	River Usk	32	197h 3m	-
Dwr Cymru Welsh Water	Glasbury WwTW Storm Overflow	River Wye	17	195h 22m	-
Dwr Cymru Welsh Water	Rhayader WwTW Tank Storm Overflow	Tributary of Afon Gwy	32	193h 45m	-
Dwr Cymru Welsh Water	Abernant Lake Storm Overflow	Afon Irfon	23	189h 5m	-
Dwr Cymru Welsh Water	Coelbren Storm Overflow	Unnamed Tributary of Nant Llech	48	177h 37m	-
Dwr Cymru Welsh Water	Llanddewi Toll House Storm Overflow	River Ithon	18	159h 33m	-
Dwr Cymru Welsh Water	Builth Wells WwTW Storm Overflow	River Wye	78	140h 38m	-
Dwr Cymru Welsh Water	NCN437 Cwmllynfell Overflow	River Llynfell	26	131h 27m	-
Dwr Cymru Welsh Water	James Street Pontardawe Storm Overflow	Upper Clydach River	37	125h 39m	-
Dwr Cymru Welsh Water	Southwest of Glyn Road Storm Overflow	River Amman	20	106h 59m	-
Dwr Cymru Welsh Water	Sennybridge Storm Overflow	River Usk	11	106h 14m	-
Dwr Cymru Welsh Water	Pontardawe Leisure Centre Storm Overflow	River Tawe	35	94h 29m	-
Dwr Cymru Welsh Water	Broad Street Storm Overflow	River Wye	29	92h 45m	-
Dwr Cymru Welsh Water	Heol Gouesnou Storm Overflow	River Usk	9	91h 53m	-
Dwr Cymru Welsh Water	Crickhowell Garn 1 Storm Overflow	River Usk	26	89h 1m	-
Dwr Cymru Welsh Water	Trebanos The Grove Storm Overflow	River Tawe	14	86h 40m	-
Dwr Cymru Welsh Water	Dolwen Fields Storm Overflow	River Ithon	15	81h 34m	-
Dwr Cymru Welsh Water	Glasbury WwTW Settled Storm Overflow	River Wye	18	79h 30m	-
Dwr Cymru Welsh Water	Canal Road Brecon Storm Overflow	River Usk	40	78h 28m	-
Dwr Cymru Welsh Water	Ger-Yr-Afon Storm Overflow	Nant Hir	24	76h 34m	-
Dwr Cymru Welsh Water	Ddole Road Llandrindod Wells Overflow	River Ithon	19	74h 44m	-
Dwr Cymru Welsh Water	Heol Glantawe Ystradgynlais No 2 Storm Overflow	River Tawe	25	60h 42m	-
Dwr Cymru Welsh Water	Ithon Road Storm Overflow	River Ithon	29	59h 57m	-
Dwr Cymru Welsh Water	Llanelwedd Storm Overflow	Henllan Brook	14	57h 27m	-
Dwr Cymru Welsh Water	Trefecca Old Railway Storm Overflow	River Llynfi	10	56h 12m	-
Dwr Cymru Welsh Water	Cefn Gorwydd WwTW Storm Overflow	Afon Irfon	9	49h 47m	-
Dwr Cymru Welsh Water	Presteigne WwTW Storm Overflow	Afon Lliw	7	48h 30m	-
Dwr Cymru Welsh Water	Newbridge -on-Wye WwTW Storm Overflow	River Wye	30	41h 46m	-
Dwr Cymru Welsh Water	Ystradgynlais Cwmtwrch Bridge Street Storm Overflow	Afon Twrch	12	41h 45m	-
Dwr Cymru Welsh Water	Bryn Bach Road Storm Overflow	River Amman	20	41h 33m	-
Dwr Cymru Welsh Water	West of Long Street Penrhos Storm Overflow	River Tawe	8	38h 41m	-
Dwr Cymru Welsh Water	East of Brecon WwTW Storm Overflow	River Usk	9	36h 3m	-
Dwr Cymru Welsh Water	Temple Street Llandrindod Wells Overflow	River Ithon	33	32h 44m	-
Dwr Cymru Welsh Water	Penybont Overflow	River Ithon	4	28h 45m	-
Dwr Cymru Welsh Water	Bronllys Storm Overflow	Unnamed Watercourse	10	26h 50m	-
Dwr Cymru Welsh Water	Heol Eglwys Ystradgynlais Storm Overflow	River Tawe	19	26h 41m	-
Dwr Cymru Welsh Water	Station Road Rear Abercraf Storm Overflow	River Tawe	14	22h 33m	-
Dwr Cymru Welsh Water	Llanyre WwTW Overflow	River Ithon	2	21h 45m	-
Dwr Cymru Welsh Water	Waurn Gyrlais Footpath Storm Overflow	Tributary of Nant Gyrlais	9	20h 41m	-
Dwr Cymru Welsh Water	Ynyscedwyn Road Ystradgynlais Storm Overflow	River Tawe	4	20h 14m	-
Dwr Cymru Welsh Water	Park Lane Llandrindod Wells Storm Overflow	River Ithon	10	18h 35m	-
Dwr Cymru Welsh Water	Rhayader WwTW Inlet Storm Overflow	River Wye	16	18h	-
Dwr Cymru Welsh Water	Lon Catwg Storm Overflow	Unnamed Tributary of the Nant Gelli-Nedd	5	17h 29m	-
Dwr Cymru Welsh Water	Lamb Bridge Storm Overflow	Nant Llynfell	6	16h 28m	-
Dwr Cymru Welsh Water	Erwood Overflow	Clettwr Brook	5	12h 15m	-
Dwr Cymru Welsh Water	Llangammarch Wells WwTW Storm Overflow	Afon Irfon	4	8h 44m	-
Dwr Cymru Welsh Water	Field West of Brecon WwTW Storm Overflow	River Usk	4	8h 38m	-
Dwr Cymru Welsh Water	Water Lane Rhayader Overflow	River Wye	2	6h 15m	-
Dwr Cymru Welsh Water	Llandrindod Wells Crabtree Green Storm Overflow	River Ithon	1	5h 14m	-
Dwr Cymru Welsh Water	Church Lane Storm Overflow	Tributary of Afon Gwy	4	4h 59m	-
Dwr Cymru Welsh Water	Caer-Lan Abercraf Storm Overflow	River Tawe	3	4h 59m	-
Dwr Cymru Welsh Water	River Tawe Godre'r Graig Storm Overflow	River Tawe	2	4h 45m	-
Dwr Cymru Welsh Water	Ford Street Storm Overflow	Afon Lliw	2	3h 45m	-
Dwr Cymru Welsh Water	Bronllys Road South Storm Overflow	River Ennig	1	1h 14m	-
Dwr Cymru Welsh Water	Ystalyfera Glanyrafon Road Storm Overflow	River Tawe	1	1h 7m	-
Dwr Cymru Welsh Water	Upstream of Crickhowell Garn 1 Storm Overflow	River Usk	1	0h 56m	-
Dwr Cymru Welsh Water	Primrose Lane Lon Y Wern Storm Overflow	Nant Llechau	2	0h 56m	-
Dwr Cymru Welsh Water	Heol Glantawe Ystradgynlais Storm Overflow	River Afan	1	0h 43m	-
Dwr Cymru Welsh Water	Bullpit Meadow Storm Overflow	River Usk	1	0h 30m	-
Dwr Cymru Welsh Water	Dan-y-Gollen Overflow	Grwyne Fawr	1	0h 15m	-
Dwr Cymru Welsh Water	Bridge Street Crickhowell Storm Overflow	River Usk	1	0h 15m	-
Dwr Cymru Welsh Water	Wye Bridge Storm Overflow	River Wye	0	0h	-
Dwr Cymru Welsh Water	Brynawelon Storm Overflow	River Usk	0	0h	-
Dwr Cymru Welsh Water	Talybont Cattle Market Storm Overflow	Caerfanell	0	0h	-
Dwr Cymru Welsh Water	Gwernyfed Park Storm Overflow	Felindre Brook	0	0h	-
Dwr Cymru Welsh Water	Llanfrynach WwTW Storm Overflow	Nant Menasgin	0	0h	-
Dwr Cymru Welsh Water	Newgate Street Llan Faes Storm Overflow	River Usk	0	0h	-
Dwr Cymru Welsh Water	North Road Storm Overflow	River Wye	0	0h	-
Dwr Cymru Welsh Water	Newgate Street Brecon Storm Overflow	River Usk	0	0h	-
Dwr Cymru Welsh Water	Crickhowell Garn 2 Storm Overflow	River Usk	0	0h	-
Dwr Cymru Welsh Water	Tawe Terrace Storm Overflow	River Tawe	0	0h	-
Dwr Cymru Welsh Water	A4067 and Ynysmeudw Road Roundabout Storm Overflow	River Tawe	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	Unknown	Unknown	0	0h	-
Dwr Cymru Welsh Water	Rhayader Fields Storm Overflow	River Wye	0	0h	-
Dwr Cymru Welsh Water	Brodawel Storm Storm Overflow	River Usk	0	0h	-
Dwr Cymru Welsh Water	Unknown	Unknown	0	0h	-
Dwr Cymru Welsh Water	Llanwrthwl WwTW Overflow	River Wye	0	0h	-
Dwr Cymru Welsh Water	Unknown	Unknown	0	0h	-
Dwr Cymru Welsh Water	Llys Tawel Ystradgynlais Storm Overflow	River Tawe	0	0h	-
Dwr Cymru Welsh Water	Warren Close Overflow	River Wye	0	0h	-
Dwr Cymru Welsh Water	Crai WwTW Storm Overflow	Nant Ddu	0	0h	-
Dwr Cymru Welsh Water	Waun Capel Parc Storm Overflow	River Wye	0	0h	-

Brecon, Radnor and Cwm Tawe - Live Sewage

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Totals for Brecon, Radnor and Cwm Tawe in 2026

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