Top of the Poops | Constituency Sewage Map - Live Data| Neath and Swansea East

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You're looking at the totals that we have calculated for sewage in Neath and Swansea East 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 Neath and Swansea East in 2026

Sewage14,585 hours

Monitoring offline0 hours

Potential pollution0 hours

Storm overflows80

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Company	Site Name	Receiving Waterway	Overflow Days	Total Duration (hours)	Offline/Potential Pollution
Dwr Cymru Welsh Water	Crynant WwTW Storm Overflow	River Dulais	152	2,960h 45m	-
Dwr Cymru Welsh Water	Baglan Sea Storm Overflow	Swansea Bay	165	2,614h 51m	-
Dwr Cymru Welsh Water	Ynys March Crynant Storm Overflow	River Dulais	123	1,765h 13m	-
Dwr Cymru Welsh Water	Cwmgwrach WwTW Storm Overflow	River Neath	109	1,491h 13m	-
Dwr Cymru Welsh Water	Clydach Bridge Street Storm Overflow	River Tawe	92	1,104h 45m	-
Dwr Cymru Welsh Water	Dulais Road Seven Sisters Storm Overflow	River Dulais	84	887h 53m	-
Dwr Cymru Welsh Water	Swansea Fabian Way Storm Overflow	The Neath Estuary	33	498h 28m	-
Dwr Cymru Welsh Water	Chain Road Storm Overflow	River Neath	47	403h 46m	-
Dwr Cymru Welsh Water	Heol Tonmaen Storm Overflow	River Neath	18	365h 43m	-
Dwr Cymru Welsh Water	Onllwyn Storm Overflow	Afon Camnant	54	275h 28m	-
Dwr Cymru Welsh Water	Dynevor Junction Storm Overflow	Neath Estuary	50	242h 35m	-
Dwr Cymru Welsh Water	Resolven WwTW Storm Overflow	River Neath	43	184h 31m	-
Dwr Cymru Welsh Water	Moses Row Storm Overflow	Melin Court Brook	25	159h 41m	-
Dwr Cymru Welsh Water	Fairfield Neath Storm Overflow	Estuarial Waters of Afon Nedd	41	155h 16m	-
Dwr Cymru Welsh Water	Swansea Bay WwTW Storm Overflow	Swansea Bay	12	142h 24m	-
Dwr Cymru Welsh Water	Melincryddan Neat Storm Overflow	Estuarial Waters of Afon Nedd	35	118h 32m	-
Dwr Cymru Welsh Water	Main Road Heol Ty Gwyn Storm Overflow	River Clydach	46	117h 33m	-
Dwr Cymru Welsh Water	Godfrey Avenue Rear Storm Overflow	River Neath	48	102h 46m	-
Dwr Cymru Welsh Water	High Street Gellidawel Road Storm Overflow	River Neath	38	90h 5m	-
Dwr Cymru Welsh Water	Neath Abbey Ruins Southeast Storm Overflow	River Clydach	26	86h 30m	-
Dwr Cymru Welsh Water	Farmers Road Storm Overflow	River Clydach	23	75h 45m	-
Dwr Cymru Welsh Water	Hebron Road Storm Overflow	Lower Afon Clydach	26	69h 52m	-
Dwr Cymru Welsh Water	Old Road Skewen Storm Overflow	Tennant Canal	28	65h 29m	-
Dwr Cymru Welsh Water	Dulais Fach Road Storm Overflow	River Neath	34	56h 6m	-
Dwr Cymru Welsh Water	Llantwit Road Neath Storm Overflow	Estuarial Waters of Llantwit Stream	12	55h 30m	-
Dwr Cymru Welsh Water	Samlet Road Storm Overflow	Nant-Y-Fendrod	12	53h 46m	-
Dwr Cymru Welsh Water	Walters Road Llansamlet Storm Overflow	Nant Bran	12	46h 25m	-
Dwr Cymru Welsh Water	Bryndulais Avenue Seven Sisters No 2 Storm Overflow	River Dulais	15	38h 14m	-
Dwr Cymru Welsh Water	Station Road Glais Storm Overflow	River Tawe	8	33h 44m	-
Dwr Cymru Welsh Water	Baldwins Crescent Overflow	Coastal Waters - Swansea Bay	13	27h 12m	-
Dwr Cymru Welsh Water	Elba Crescent Swansea Overflow	Swansea Bay	8	24h 30m	-
Dwr Cymru Welsh Water	Neath Quay Road Storm Overflow	Estuarial Waters of the River Neath	17	23h 58m	-
Dwr Cymru Welsh Water	Plas Y Coed Storm Overflow	River Neath	14	23h	-
Dwr Cymru Welsh Water	Heol Hendre Bryncoch Storm Overflow	Tributary of Afon Clydach	11	18h 59m	-
Dwr Cymru Welsh Water	Pentreffynnon Storm Overflow	Estuarial Waters of Afon Nedd	5	16h 27m	-
Dwr Cymru Welsh Water	Main Road Bryncoch Storm Overflow	Tributary of River Clydach	3	13h 30m	-
Dwr Cymru Welsh Water	Bonymaen Road No. 1 Storm Overflow	River Tawe	12	13h 23m	-
Dwr Cymru Welsh Water	Lonlas Storm Overflow	Crymlyn Brook	5	12h 40m	-
Dwr Cymru Welsh Water	Llandarcy Outfall Storm Overflow	Estuarial Waters Of The River Neath	4	12h 19m	-
Dwr Cymru Welsh Water	Gnoll Park Road Storm Overflow	River Neath	11	11h 25m	-
Dwr Cymru Welsh Water	Heol Dulais Birchgrove Storm Overflow	Nant Bran	3	11h 25m	-
Dwr Cymru Welsh Water	Halfway Pentre-Dwr Storm Overflow	Tributary of Crymlyn Bog	2	11h 13m	-
Dwr Cymru Welsh Water	Bonymaen Road No. 2 Storm Overflow	River Tawe	11	9h 46m	-
Dwr Cymru Welsh Water	Peniel Green Road Storm Overflow	Tributary of Nant-Bran	5	9h 41m	-
Dwr Cymru Welsh Water	Roman Way Neath Storm Overflow	River Neath	5	8h 58m	-
Dwr Cymru Welsh Water	Monastery Road Storm Overflow	River Clydach	5	8h 50m	-
Dwr Cymru Welsh Water	Aberdulais Storm Overflow	Neath Estuary	7	7h 29m	-
Dwr Cymru Welsh Water	Bethel Road Llansamlet Storm Overflow	Tributary of Nant-Bran	2	7h	-
Dwr Cymru Welsh Water	Cimla Road Gnoll Brook Storm Overflow	Gnoll Brook	2	6h 59m	-
Dwr Cymru Welsh Water	Dwr Y Felin Road Storm Overflow	Estuarial Waters of Afon Nedd	2	5h 56m	-
Dwr Cymru Welsh Water	Neath Penrhiwtyn Storm Overflow	Tributary of River Clydach	1	5h 30m	-
Dwr Cymru Welsh Water	Ynys y Mond Road Swansea Overflow	River Tawe	2	5h 14m	-
Dwr Cymru Welsh Water	Pentre Chwyth Kilvey Hill Storm Overflow	River Tawe	11	5h 6m	-
Dwr Cymru Welsh Water	Main Road Aberdulais No2 Storm Overflow	Tributary of Tennant Canal	2	3h 58m	-
Dwr Cymru Welsh Water	Birchgrove Road Storm Overflow	Surface Water Culvert leading to Nant Bran	3	3h 40m	-
Dwr Cymru Welsh Water	Bethel Road Glynneath Storm Overflow	River Neath	4	3h 15m	-
Dwr Cymru Welsh Water	Main Road Aberdulais No.1 Storm Overflow	River Dulais	1	2h 13m	-
Dwr Cymru Welsh Water	Heol Eithrym Storm Overflow	Lower Afon Clydach	3	1h 26m	-
Dwr Cymru Welsh Water	Fabian Way Swansea Storm Overflow	Estuarial Waters of Swansea Bay	1	1h 15m	-
Dwr Cymru Welsh Water	B4434 Roundabout Resolven Storm Overflow	River Neath	3	1h 14m	-
Dwr Cymru Welsh Water	Longford Road Storm Overflow	Tributary of Afon Clydach	2	1h 11m	-
Dwr Cymru Welsh Water	Neath Hillside Lane Storm Overflow	Eastland Brook	3	1h 3m	-
Dwr Cymru Welsh Water	Cimla Common Storm Overflow	Hollins Clough Ditch	1	0h 44m	-
Dwr Cymru Welsh Water	Stanley Place Storage Storm Overflow	Tributary of Tennant Canal	2	0h 30m	-
Dwr Cymru Welsh Water	Trallwn Community Centre Storm Overflow	Nant Bran	1	0h 30m	-
Dwr Cymru Welsh Water	Clyne Near Twrch Brook Storm Overflow	River Neath	2	0h 29m	-
Dwr Cymru Welsh Water	Heol Illtyd Storm Overflow	River Neath	1	0h 29m	-
Dwr Cymru Welsh Water	Caenant Terrace Storm Overflow	Tennant Canal	0	0h	-
Dwr Cymru Welsh Water	Unknown	Unknown	0	0h	-
Dwr Cymru Welsh Water	Cadoxton Road Storm Overflow	River Neath	0	0h	-
Dwr Cymru Welsh Water	Heol-Y-Nant Sybil Street Storm Overflow	River Tawe	0	0h	-
Dwr Cymru Welsh Water	Quarr Rd Storm Overflow	River Tawe	0	0h	-
Dwr Cymru Welsh Water	Drummau Road Storm Overflow	Nant-Y-Fendrod	0	0h	-
Dwr Cymru Welsh Water	Unknown	Unknown	0	0h	-
Dwr Cymru Welsh Water	Dulais Fach Road Junction Storm Overflow	Tributary of Neath Canal	0	0h	-
Dwr Cymru Welsh Water	Dyfed Road Neath Storm Overflow	River Neath	0	0h	-
Dwr Cymru Welsh Water	Bryndulais Avenue Seven Sisters No1 Storm Overflow	River Dulais	0	0h	-
Dwr Cymru Welsh Water	Cardonnel Road Storm Overflow	River Neath	0	0h	-
Dwr Cymru Welsh Water	Glais Swansea Overflow	River Tawe	0	0h	-
Dwr Cymru Welsh Water	Heol Las Storm Overflow	Nant Y Fendrod	0	0h	-

Neath and Swansea East - Live Sewage

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Totals for Neath and Swansea East in 2026

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