Merthyr Tydfil and Rhymney polluted by sewage 1,698 times in 2022 - lasting 8,434 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 Merthyr Tydfil and Rhymney in 2022
36 Sites polluted by Dwr Cymru Welsh Water
1,698 sewage dumps
8,434 h duration
That's 11.71 months. On average 4.7 times a day

Pollution Summary 2022

Here are all the reported sewage overflow totals for Merthyr Tydfil and Rhymney 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 Taf Fechan PONTSTICILL WWTW 96 1,994 100
Dwr Cymru Welsh Water River Taff Gellideg Tai Mawr Rd CSO, Merthyr Tydfil 79 777 99.3
Dwr Cymru Welsh Water River Rhymney Abertysswg Rugby Playing Field CSO 89 609 99
Dwr Cymru Welsh Water Taff Bargoed CSO at Bedlinog- Bowling Green 83 585 99.1
Dwr Cymru Welsh Water Morlais Brook A CSO AT WATERLOO HOUSE MERTHYR 110 582 97.3
Dwr Cymru Welsh Water Nant Bargoed Deri, Darran Valley CSO 61 500 100
Dwr Cymru Welsh Water River Rhymney CSO Nr Bethania Cottages 82 474 99.4
Dwr Cymru Welsh Water Pandy Brook TRELEWIS CSO - REAR OF GLYNBARGOED 114 428 97.2
Dwr Cymru Welsh Water Morlais Brook CSO at The Bont, Merthyr Tydfil 91 316 96.6
Dwr Cymru Welsh Water River Rhymney CSO NEAR RHYMNEY STATION 75 294 99.1
Dwr Cymru Welsh Water River Taff A CSO AT JACKSONS BRIDGE 89 292 99.4
Dwr Cymru Welsh Water River Rhymney CSO At New Tredegar Adj Rhosyn Gwyn 32 272 100
Dwr Cymru Welsh Water Pentrebach Brook Dixs Field CSO, Pentrebach, Merthyr 69 190 95.2
Dwr Cymru Welsh Water River Taff CSO COLLEGE CAR PK MERTHYR TYDFIL 46 142 100
Dwr Cymru Welsh Water River Rhymney Rhymney Carno St Bute House CSO 64 130 93.3
Dwr Cymru Welsh Water Nant Morlais Rocky Rd CSO Merthyr Tydfil 62 109 99.4
Dwr Cymru Welsh Water River Rhymney CSO AT REAR OF MEMORIAL HOSPITAL 43 109 98.7
Dwr Cymru Welsh Water Morlais Brook CSO TREVITHICK MONUMENT MERTHYR 64 107 96.1
Dwr Cymru Welsh Water Rhymney R - Source To Conf Nant Bargod Rhymni Pontlottyn Newydd Farm CSO 41 99 99.8
Dwr Cymru Welsh Water Taff CSO PONT RHUN MERTHYR TYDFIL 36 96 100
Dwr Cymru Welsh Water River Taff Quakers Yard CSO, Greenfield Victoria Bridge 22 61 80.2
Dwr Cymru Welsh Water Rhymney R - Source To Conf Nant Bargod Rhymni Pontlottyn Recreation Ground CSO 40 57 99.6
Dwr Cymru Welsh Water River Taff Merthyr Tydfil Georgetown Lines Bridge CSO 50 57 99.8
Dwr Cymru Welsh Water River Rhymney A CSO AT PONTLOTTYN 23 53 96.1
Dwr Cymru Welsh Water River Taff Quakers Yard CSO, Fiddlers Elbow St, Cynon 15 34 16.5
Dwr Cymru Welsh Water River Taff CSO Avenue De Clichy, Merthyr 25 19 100
Dwr Cymru Welsh Water Taf Fechan High St CSO, Cefn Coed 37 18 99.8
Dwr Cymru Welsh Water Goitre Brook Goitre Lane CSO 17 7 99.5
Dwr Cymru Welsh Water Morlais Brook Brewers Arms CSO, Balaclava Rd, Dowlais 18 5 100
Dwr Cymru Welsh Water River Taff Troedyrhiw, Yew Street CSO 7 2 99.6
Dwr Cymru Welsh Water River Taff 3rd Trunk CSO South of Glan Yr Afon 6 1 100
Dwr Cymru Welsh Water River Taff Phyllis Street CSO, Troedyrhiw 3 0 100
Dwr Cymru Welsh Water River Rhymney A CSO AT BIRTHDIR NEAR STATION 3 0 100
Dwr Cymru Welsh Water River Taff TROEDYRHIW PS 3 0 98.5
Dwr Cymru Welsh Water Un Leading To Nant Morlais Dowlais Market St & High St Junction 2 0 99.7
Dwr Cymru Welsh Water Rhymney River New Tredegar Birch Grove 1 0 41.8
Dwr Cymru Welsh Water River Taff TRUNK CSO 2A OFF ABERFAN ROAD 0 0 15.8
Dwr Cymru Welsh Water Bargoed Taf CSO at QUAKERS YARD - NEAR PUBLIC HOU 0 0 100
Dwr Cymru Welsh Water Morlais Brook Balaclava Rd CSO, Dowlais 0 0 100
Dwr Cymru Welsh Water Morlais Brook CSO AT DOWLAIS BALACLAVA ROAD 0 0 97.2
Dwr Cymru Welsh Water River Taff CSO WILLOW GAS WORKS MERTHYR TYDFIL 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

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.