Rhondda polluted by sewage 3,078 times in 2022 - lasting 14,868 hours

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Contains OS Data © Crown copyright & database right 2021-2022
© Top of the Poops 2021-2023
✔ means we have experimental daily data for 2023
Totals for Rhondda in 2022
60 Sites polluted by Dwr Cymru Welsh Water
3,078 sewage dumps
14,868 h duration
That's 1.72 years! On average 8.4 times a day
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Constituencies near Rhondda
Waterways in Rhondda

Pollution Summary 2022

Here are all the reported sewage overflow totals for Rhondda in 2022. Sometimes sewage can be being dumped for months at a time.

Company Waterway Site Sewage Dumps Duration (Hours) Reporting %
Dwr Cymru Welsh Water Rhondda River Fawr REGENT ST CSO TREORCHY RHONDDA 146 1,687 99.9
Dwr Cymru Welsh Water River Rhondda Brook Street Combined Sewer Overflow 141 991 96.6
Dwr Cymru Welsh Water River Rhondda Fach R/O Tylorstown Primary School CSO, Tylorstown 142 889 92.7
Dwr Cymru Welsh Water River Rhondda Fach Ferndale Road CSO Tylorstown RCT 79 885 99
Dwr Cymru Welsh Water Rhondda Fawr Ton Pentre PS CSOTont Pentre RCT 138 873 90.9
Dwr Cymru Welsh Water River Rhondda Fach CSO at CROSS STREET YNYSHIR R-C-T 92 834 100
Dwr Cymru Welsh Water Rhondda Fach CSO at Blaenllechau School St 140 750 97.3
Dwr Cymru Welsh Water Nant Clydach A CSO at Clydach Vale Davies Street 126 665 94.8
Dwr Cymru Welsh Water River Rhondda Fach Ferndale Banana Tip CSO Additional 82 620 99.1
Dwr Cymru Welsh Water River Rhondda Fawr Rear of Richards Terrace CSO 73 615 99.5
Dwr Cymru Welsh Water River Rhondda Fach Rear of Fir St CSO, Ferndale 112 593 92.3
Dwr Cymru Welsh Water Nant Clydach Railway Terrace CSO, Clydach Vale 91 509 99
Dwr Cymru Welsh Water River Rhondda Fach Station Rd CSO, Ferndale 89 473 92
Dwr Cymru Welsh Water River Rhondda Fach Rear of Blake St CSO, Maerdy 87 450 99
Dwr Cymru Welsh Water Rhondda Fawr Station Rd CSO, Dinas, Porth 114 444 97.8
Dwr Cymru Welsh Water Rhondda Fawr Gelligaled Pk CSO Ystrad Rhondda 84 406 97.6
Dwr Cymru Welsh Water River Rhondda Fach Maerdy Station Road CSO 73 387 98.9
Dwr Cymru Welsh Water Rhondda Fawr River CSO GYLFACH ROAD PORTH RHONDDA 94 360 99.9
Dwr Cymru Welsh Water Rhondda Fach FERNDALE BANANA TIP SSO OLD SCHOOL 88 320 99.9
Dwr Cymru Welsh Water River Rhondda Fach FERNDALE BANANA TIP CSO 74 248 98.8
Dwr Cymru Welsh Water River Rhondda Fach Blaenllechau Taff St CSO 61 234 97
Dwr Cymru Welsh Water Rhondda R - Source To Conf River Rhondda Fach Penygraig Rd CSO, Penygraig 69 190 98.7
Dwr Cymru Welsh Water Rhondda Fawr CSO O/S Welcome Inn, Tylacelyn Rd, Penygraig 89 177 99.3
Dwr Cymru Welsh Water Rhondda Fawr River GLANNANT ST/DINAS ROAD CSO 63 173 99.4
Dwr Cymru Welsh Water River Rhondda Fach CSO OPP 37 EDMONDES ST TYLORSTOWN 65 139 99.5
Dwr Cymru Welsh Water Rhondda Fawr River Blaencwm Rd/Tydraw Terrace CSO 31 110 99.7
Dwr Cymru Welsh Water River Rhondda Llwynypia Rd CSO, Tonypandy 62 107 99.4
Dwr Cymru Welsh Water Rhondda Fach River PONTYGWAITH BRIDGE CSO ASSET 71188 51 97 98.6
Dwr Cymru Welsh Water Rhondda Fawr CSO to rear of 8 Griffin Park 33 75 100
Dwr Cymru Welsh Water River Rhondda Fach Highfield Industrial Estate CSO, Ferndale 31 70 99.3
Dwr Cymru Welsh Water Rhondda River CSO at Rear of George Street, Treherbert 14 53 24.2
Dwr Cymru Welsh Water River Rhondda Trehafod Pumping Station 68 53 91.7
Dwr Cymru Welsh Water Rhondda Fach CSO at Blaenllechau Commercial & George St Jn 13 49 48.5
Dwr Cymru Welsh Water Rhondda Fawr REES STREET PUMPING STATION GELLI 42 44 100
Dwr Cymru Welsh Water Rhondda Fach Cwmparc Railway Terrace CSO 31 41 99.8
Dwr Cymru Welsh Water River Rhondda A Combined Sewer Overflow, Trehafod 6 37 97
Dwr Cymru Welsh Water Nant Clydach CSO at Tonypandy, Rear of De Winton St 16 29 99.9
Dwr Cymru Welsh Water Rhondda River Fawr Llwynypia SPS 34 26 100
Dwr Cymru Welsh Water River Rhondda Fach CSO at Wattstown-Bailey St Land Recla 20 23 97.5
Dwr Cymru Welsh Water Rhondda Fawr CSO at Penycraig - Tylacelyn Road 28 19 88.7
Dwr Cymru Welsh Water Rhondda River Via A Culvert Old Brithweunydd Road CSO, Tonypandy 33 18 99.9
Dwr Cymru Welsh Water River Rhondda Fawr Treherbert Ind Est CSO Treherbert 10 13 100
Dwr Cymru Welsh Water Rhondda Fawr Treherbert Bute/Corbett/David St Junction CSO 9 12 94.5
Dwr Cymru Welsh Water Rhondda Fawr CSO OFF YNYSCYNON ROAD TREALAW 12 10 94.6
Dwr Cymru Welsh Water River Rhondda Herbert St CSO 8 7 82.2
Dwr Cymru Welsh Water River Rhondda Fawr PENTRE - VOLUNTEER STREET PUMPING STATION 13 7 100
Dwr Cymru Welsh Water Rhondda R - Source To Conf River Rhondda Fach Penygraig Nantgwyn St/Hill St Jn CSO 19 6 99.5
Dwr Cymru Welsh Water River Rhondda River Terrace CSO, Treorchy, Rhondda 16 6 99.9
Dwr Cymru Welsh Water Rhondda Fawr River Rear of William St CSO, Ystrad 22 5 96
Dwr Cymru Welsh Water River Rhondda Fach James Terrace CSO 8 5 99.9
Dwr Cymru Welsh Water Nant Ystradffernol Via A Culvert Blaen-y-Cwm Terrace CSO 7 3 99.7
Dwr Cymru Welsh Water River Rhondda Fawr LEWIS STREET CSO & PUMPING STATION 6 2 100
Dwr Cymru Welsh Water Rhondda Fawr ELISABETH CLOSE CSO PENTRE RCT 6 2 100
Dwr Cymru Welsh Water Rhondda Fach Dolgwilym River Bridge CSO 6 1 100
Dwr Cymru Welsh Water River Rhondda Cymmer Rd CSO, Porth 3 0 100
Dwr Cymru Welsh Water River Rhondda Fach CSO at Ferndale btw Taff St & Station Rd 3 0 100
Dwr Cymru Welsh Water Rhondda Fach River JUNCT OF BRONDEG AND PENRHYS ST CSO 2 0 100
Dwr Cymru Welsh Water River Rhondda Fawr GELLI CROSSING PUMPING STATION RHON 1 0 100
Dwr Cymru Welsh Water Rhonda Fawr River TREORCHY CSO - M/H AT SIDE OF BOYS 1 0 94.4
Dwr Cymru Welsh Water Rhondda Fawr CSO at 136 Tyntyla Road, Tonypandy 1 0 100
Dwr Cymru Welsh Water Nant Cymparc Junction of Sunnyhill & Park Crescent CSO, Cwmparc 0 0 14.5
Dwr Cymru Welsh Water River Rhondda Fawr CSO at Junct Ystrad/Church Road Ystrad 0 0 0
Dwr Cymru Welsh Water River Rhondda Fach Aberrhondda Road CSO 0 0 0
Dwr Cymru Welsh Water River Rhondda Fach Blaenllechau Long Row CSO 0 0 100
Dwr Cymru Welsh Water River Rhondda Fach Ferndale Banana Tip No.1 CSO 0 0 1.9
Dwr Cymru Welsh Water River Rhondda CSO AT CADWGAN TERRACE TREHAFOD 0 0 99.9
Dwr Cymru Welsh Water River Cynon Pentre - Llewellyn Street CSO 0 0 100
Dwr Cymru Welsh Water Rhondda Fach River East Rd CSO Tylorstown 0 0 99.7
Dwr Cymru Welsh Water Rhondda Fawr Treherbert Pumping Station, Park Close 0 0 99.9
Dwr Cymru Welsh Water Rhondda River Via A Culvert Rees Street 71 CSO, Pentre 0 0 0
Dwr Cymru Welsh Water Rhondda Fach CSO at FURNACE ROAD PONTYGWAITH RCT 0 0 99.7
Dwr Cymru Welsh Water Rhondda River Treherbert - Opposite Railway CSO 0 0 99.9
Dwr Cymru Welsh Water Rhondda Fawr River 2 Clarence St CSO, Pentre 0 0 100

Data Sources & Accuracy

EDM (Event Duration Monitoring) data and Consented Discharges to Controlled Waters with Conditions from Environment Agency & Data Map Wales

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.

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