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Swansea West was polluted by sewage 991 times in 2023
lasting 4,207 hours
- 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 Swansea West in 2023
28 Sites polluted by Dwr Cymru Welsh Water
991 sewage dumps
4,207 h duration
That's 5.84 months. On average 2.7 times a day
Change Over Time
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Constituencies near Swansea West
Waterways in Swansea West

Pollution Summary 2023

Here are all the reported sewage overflow totals for Swansea West 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 4 of the total 35 CSO locations had reporting enabled for less than half the year, of which 4 had zero reporting.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Dwr Cymru Welsh Water River Tawe CSO Ynysforgan Roundabout 105 1,210 100
Dwr Cymru Welsh Water Culvert Of Bwrlais Brook CWMBWRLA CSO CWMBWRLA RBOUT SWANSEA 138 976 100
Dwr Cymru Welsh Water River Tawe WYCHTREE STREET CSO MORRISTON 94 824 100
Dwr Cymru Welsh Water River Tawe CSO 70 A4067 Nthbnd Landore Swansea 106 358 99.5
Dwr Cymru Welsh Water River Clyne CSO NO 21 DERWEN FAWR ROAD SKETTY S 35 116 98.7
Dwr Cymru Welsh Water River Llan Blaenymaes Drive CSO 49 111 99.8
Dwr Cymru Welsh Water Estuarial Waters Of Swansea Ba SWO. NEAR H.M. PRISON (POINT 6 46 100 86.2
Dwr Cymru Welsh Water River Clyne CSO NO 34 REAR OF FURZELAND DRIVE S 38 86 90.1
Dwr Cymru Welsh Water Culvert Of Cwm Gelli Stream BRYNHYFRYD CSO LLANGYFELACH ROAD 60 85 99.9
Dwr Cymru Welsh Water Culvert Of Burlais Brook CSO 119 CWM ROAD HAFOD SWANSEA 68 70 96.3
Dwr Cymru Welsh Water Nant Cwmgelli Via Surface Water Drains CSO at Penlan Cresent (Point 52A) Swansea 67 70 99.7
Dwr Cymru Welsh Water River Llan Skomer Place CSO, Blaen Y Maes 39 67 99.8
Dwr Cymru Welsh Water Swansea Bay Sketty Green CSO 13 64 99.9
Dwr Cymru Welsh Water Nant Cwm Gelli MYNYDDGARNLLWYD CSO SWANSEA 27 13 85.1
Dwr Cymru Welsh Water Brynmill Stream Singleton Park Point 24 CSO 20 10 100
Dwr Cymru Welsh Water River Llan Mynydd Newydd Rd CSO 7 10 100
Dwr Cymru Welsh Water Culvert Of Cwm Gelli Stream CSO 69 TRWYDDFA ROAD SWANSEA 20 7 82
Dwr Cymru Welsh Water River Llan Via Surface Water Sewer Cadle Common CSO 8 6 78.5
Dwr Cymru Welsh Water River Llan Cadleroad Road CSO 9 4 44
Dwr Cymru Welsh Water River Clyne CSO SKETTY PARK DRIVE SWANSEA , 5 4 100
Dwr Cymru Welsh Water Cwmrhydyceirw Brook Via Surface Water Network CSO 80 Pentrpoeth Rd Morriston 14 3 35.4
Dwr Cymru Welsh Water Brynmill Stream CSO AT GLANBRYDAN AVENUE 6 2 99.9
Dwr Cymru Welsh Water A Culvert Of Burlais Brook CSO 60 Gors Avenue Swansea 5 1 100
Dwr Cymru Welsh Water River Llan Via Surface Water Sewer FFORD-Y-BRAIN/PORT TALBOT PLACE CSO 2 1 75.6
Dwr Cymru Welsh Water Nant Melyn Via The Surface Water Sewer CSO 72 Slate St Morriston Swansea 4 1 97.5
Dwr Cymru Welsh Water Sea BRYNYMOR ROAD/WESTBURY RD POINT 28 3 0 99.9
Dwr Cymru Welsh Water Nant Melyn Via The Surface Water Sewer CSO 81 CWM BATH ROAD MORRISTON 2 0 99.9
Dwr Cymru Welsh Water River Tawe CSO Near Chemical Rd. Morriston 1 0 99.7
Dwr Cymru Welsh Water Swansea Bay OUTFALL K (CSO 264) JUN OF MUMBLES 0 0 99.9
Dwr Cymru Welsh Water Surface Water Sewer To Cwm Gelli Stream CSO 64A PENLANFACH BRYNHYFRYD 0 0 48.8
Dwr Cymru Welsh Water Nant Melyn Via The Surface Water Sewer CSO 73 CROWN ST MORRISTON SWANSEA 0 0 0
Dwr Cymru Welsh Water River Tawe CSO Ynystawe (Point 86 New Ma) 0 0 0
Dwr Cymru Welsh Water River Tawe CAMBRIAN PLACE POINT 120 , , 0 0 0
Dwr Cymru Welsh Water Cwm Gelli Stream, River Tawe CSO 69A Heol Nant Gelli Swansea 0 0 99.7
Dwr Cymru Welsh Water River Tawe Esturial Waters OUTFALL 'M' THE TAWE BARRAGE SWANS 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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