Join Us 3rd November 2024 - London

March for Clean Water

Neath and Swansea East was polluted by sewage 3,755 times in 2023
lasting 27,397 hours - that's 3.17 years!
- but monitoring was disabled in some locations, so could be more

© OpenStreetMap contributors
Contains OS Data © Crown copyright & database right 2021-2023
© Top of the Poops 2021-2023
✔ means we have experimental daily data since 2023
Totals for Neath and Swansea East in 2023
68 Sites polluted by Dwr Cymru Welsh Water
3,755 sewage dumps
27,397 h duration
That's 3.17 years! On average 10.3 times a day
Change Over Time
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Constituencies near Neath and Swansea East
Waterways in Neath and Swansea East

Pollution Summary 2023

Here are all the reported sewage overflow totals for Neath and Swansea East in 2023. Sometimes sewage can be being dumped for months at a time.

Reporting refers to how much of the time the monitoring was active. In this constituency 6 of the total 75 CSO locations had reporting enabled for less than half the year, of which 6 had zero reporting.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Dwr Cymru Welsh Water River Dulais CRYNANT STW CRYNANT NEATH 148 3,204 100
Dwr Cymru Welsh Water River Dulais YS.MARCH CRYNANT SWO 2C 198 2,909 94.5
Dwr Cymru Welsh Water River Tawe Inco CSO Clydach Swansea 180 2,140 98.3
Dwr Cymru Welsh Water River Dulais CSO at Crynant STW Crynant Neath 79 1,672 100
Dwr Cymru Welsh Water Neath Estuary FABIAN WAY SPS FABIAN WAY SWANSEA 82 1,600 99.9
Dwr Cymru Welsh Water River Dulais Nant-y-Cafan CSO, Dulais Valley 136 1,540 99.9
Dwr Cymru Welsh Water Neath Estuary Dynevor Junction SPS 142 1,515 99.9
Dwr Cymru Welsh Water River Camnant Onllwyn SPS 123 1,500 99.5
Dwr Cymru Welsh Water Melin Court Brook MOSES ROW CSO RESOLVEN NEATH 104 1,422 93.4
Dwr Cymru Welsh Water River Neath CSO 48 NEATH RIVER BRIDGE ADJ CALOR 170 1,056 100
Dwr Cymru Welsh Water River Neath Park Avenue CSO 186 779 95.1
Dwr Cymru Welsh Water River Neath Chainbridge CSO, Glyn-Neath 74 646 99.9
Dwr Cymru Welsh Water River Clydach CSO 27 Farmers Road Pumping Station 97 550 99.9
Dwr Cymru Welsh Water Estuarial Waters Of River Neath Fairfield SPS, Neath 114 488 100
Dwr Cymru Welsh Water Estuarial Waters Of River Neath Melincryddan SPS 95 418 100
Dwr Cymru Welsh Water Nant-Bran Felin Fran CSO Walters Rd Llansamle 69 414 98.8
Dwr Cymru Welsh Water River Neath GUNSIGHT OVERFLOW SWO 11 CSO 43 405 99.7
Dwr Cymru Welsh Water Nant-Y-Fendrod Samlet Rd CSO 103 68 400 99.5
Dwr Cymru Welsh Water Tennant Canal OLD ROAD CSO OLD ROAD SKEWEN NEATH 101 395 100
Dwr Cymru Welsh Water River Clydach Neath Abbey SPS 84 394 99.9
Dwr Cymru Welsh Water River Neath CSO AT REAR GODFREY AVENUE GLYNNEATH NPT 79 362 99
Dwr Cymru Welsh Water Sea Outfall TEMPORARY INCREASED DIS. FROM 76 321 95.1
Dwr Cymru Welsh Water Lower Clydach River Canal CSO. Towpath Off Hebron Road, Clydach 85 280 99.1
Dwr Cymru Welsh Water River Neath Commercial Road Sewage Pumping Station 40 273 99.3
Dwr Cymru Welsh Water River Neath RESOLVEN STW STORM TANKS NEATH 31 268 100
Dwr Cymru Welsh Water Tennant Canal CSO 49 LLANGATWG SCHOOL ABERDULIAS 57 268 100
Dwr Cymru Welsh Water River Neath Via Surface Water Sewer Plas-Y-Coed CSO, Glynneath 88 234 99.1
Dwr Cymru Welsh Water Esturial Water Of River Neath Quay Road PS Town Centre Neath 77 139 100
Dwr Cymru Welsh Water River Dulais BRYNDULAIS CSO 48 137 100
Dwr Cymru Welsh Water River Tawe Glais CSO 43 129 99.8
Dwr Cymru Welsh Water River Tawe Glais SPS 43 129 99.8
Dwr Cymru Welsh Water Sea Outfall BALDWINS CRESCENT SPS 51 127 99.9
Dwr Cymru Welsh Water River Tawe Bonymaen Rd CSO 71 113 99.9
Dwr Cymru Welsh Water River Neath CSO IN FOOTPATH ADJ BETHEL RD 31 102 99.9
Dwr Cymru Welsh Water River Clydach Rear No 1 Dyffryn V'W Bryn Coch CSO 42 83 99.9
Dwr Cymru Welsh Water Nant-Y-Fendrod DRUMAU FARM BIRCHGROVE RD P.S. CSO 24 81 82.5
Dwr Cymru Welsh Water River Tawe Pentrechwyth Rd CSO 57 81 99.7
Dwr Cymru Welsh Water Swansea Bay Swansea Waste Water Treatment Works 19 80 99.3
Dwr Cymru Welsh Water Neath Estuary ABERDULAIS SPS 16 73 51
Dwr Cymru Welsh Water Estuarial Waters Of River Neath Pentreffynnon Sewage Pumping Station at Neath Abbey Ind Estate, Neath 41 71 100
Dwr Cymru Welsh Water River Neath Gnoll Park Road CSO 72 68 99.7
Dwr Cymru Welsh Water River Clydach CSO NO 10 30M U/S ROADBRIDGE 51 66 99.7
Dwr Cymru Welsh Water Nant Bran PENIEL GREEN CSO PENIEL GREEN ROAD 11 63 35.1
Dwr Cymru Welsh Water River Clydach CSO 8 Bryncoch 7B Bryncoch 15 52 100
Dwr Cymru Welsh Water To Crymlyn Brook Via A Surface Water Culvert Skewen SPS Park Avenue Lonlas Neath 25 45 100
Dwr Cymru Welsh Water Tidal River Neath Llandarcy 36" Outfall 38 42 99.8
Dwr Cymru Welsh Water River Tawe Opp 74 Bonymaen Rd CSO, Swansea , 30 32 49
Dwr Cymru Welsh Water Estuarial Waters Of Llantwit Stream Llantwit Church SPS 25 30 99.9
Dwr Cymru Welsh Water River Clydach Longford Road Neath Abbey CSO 13 29 100
Dwr Cymru Welsh Water River Dulais CSO Outside Visitor Centre, Aberdulais 7 28 99.9
Dwr Cymru Welsh Water River Neath Via Surface Water Sewer Penrhiwtyn SPS 4 21 99.5
Dwr Cymru Welsh Water River Clydach Monastery Road Cso (Cso 35) Neath 9 16 100
Dwr Cymru Welsh Water Eastland Brook St Joseph's Church CSO 29 15 100
Dwr Cymru Welsh Water Neath - Conf With Nedd Fechan And Mellte To Tl CSO at Resolven Above Clydach Brook 35 12 98.7
Dwr Cymru Welsh Water Gnoll Brook CSO 33 CIMLA ROAD CIMLA NEATH 6 11 99.7
Dwr Cymru Welsh Water Estuarial Waters Of Swansea Ba SWO. QUEENS DOCK (POINT 92 NEW 14 8 99.7
Dwr Cymru Welsh Water Nant Bran Via Culverted Watercourse Heol Dulais CSO at Birchgrove 9 8 99.5
Dwr Cymru Welsh Water Hollins Clough Ditch CSO 9 CIMLA COMMON CIMLA NEATH 6 8 99.9
Dwr Cymru Welsh Water Crymlyn Bog CSO HALFWAY CRYMLYN ROAD PS 6 6 98.4
Dwr Cymru Welsh Water Surface Water Culvert, An Nant Bran Birchgrove Road CSO 12 6 100
Dwr Cymru Welsh Water Neath Canal Park Street CSO Park Street Tonna 12 3 100
Dwr Cymru Welsh Water Tennant Canal Church Road CSO Church Road Neath 2 3 100
Dwr Cymru Welsh Water Neath - Conf With Nedd Fechan And Mellte To Tl Adj Health Centre CSO, Dyfed Rd 5 1 100
Dwr Cymru Welsh Water Tennant Cannal CSO at R/O 38 Caenant Terrace, Neath 2 1 100
Dwr Cymru Welsh Water Unnamed Stream To Tennant Canal New Road Nursing Home CSO, Skewen 1 1 94.5
Dwr Cymru Welsh Water Nant Y Fendrod - Headwaters To Conf With Tawe Birchgrove CSO 2 0 100
Dwr Cymru Welsh Water River Neath Cadoxton Road CSO Cadoxton Road 1 0 100
Dwr Cymru Welsh Water Nant Bran Via Culvert Trallwyn Community Centre CSO 1 0 99.9
Dwr Cymru Welsh Water River Dulais BRYNDULAIS (SWO 2A) 0 0 0
Dwr Cymru Welsh Water River Tawe CSO at QUARRY ROAD CLYDACH (POINT 125) 0 0 0
Dwr Cymru Welsh Water Nant Bran Adj 27 Bethel Rd Llansamlet CSO 0 0 0
Dwr Cymru Welsh Water River Neath Clyne SPS Clyne Neath Neath Port T 0 0 0
Dwr Cymru Welsh Water River Neath HEOL ILLTYD CSO BRYNCOCH NPT 0 0 100
Dwr Cymru Welsh Water River Tawe Heol Y Nant/Sybil Street Clydach CSO 0 0 0
Dwr Cymru Welsh Water Lower Clydach River Storm Overflow at Heol Eithrim 0 0 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. This 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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