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Pollution Summary 2023

Here are all the reported sewage overflow totals for River Cynon in 2023. Sometimes sewage can be being dumped for months at a time.

These numbers are very slightly different from the Rivers page. We're working on it.

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Dwr Cymru Welsh Water	River Cynon	MIKES FIELD CSO ABERAMAN	135	2,042	99.9
Dwr Cymru Welsh Water	River Cynon	CSO Opposite Arthurs Place Trecynon	143	1,726	99.9
Dwr Cymru Welsh Water	River Cynon	PONTCYNON PIPE BRIDGE CSO ABERCYNON	110	1,127	96.7
Dwr Cymru Welsh Water	River Cynon	CSO ABERAMAN IND EST ABERAMAN	61	989	85.8
Dwr Cymru Welsh Water	River Cynon	Penderyn CSO - Tank In Field Raked Scre	127	949	96.3
Dwr Cymru Welsh Water	River Cynon	CSO At Bottom Monk Street	121	933	100
Dwr Cymru Welsh Water	River Cynon	CSO at West Bank Of River South Of A455 Br	87	439	100
Dwr Cymru Welsh Water	River Cynon	CSO Opposite Miskin Hotel, far side of railway	102	425	98.9
Dwr Cymru Welsh Water	River Cynon	Oxford St CSO, Mountain Ash	69	409	49.4
Dwr Cymru Welsh Water	River Cynon	Cwmbach CSO - Outside Bro Deg	79	235	98.1
Dwr Cymru Welsh Water	River Cynon	CSO AT BOTTOM MONK STREET (Station St Aberdare)	67	202	100
Dwr Cymru Welsh Water	River Cynon	Glassbrook Terrace CSO, Penrhiwceiber	57	132	99.3
Dwr Cymru Welsh Water	River Cynon	Cwmbach Bro Deg Near No44	53	111	99.4
Dwr Cymru Welsh Water	River Cynon	Duffryn Rd Mount 2 CSO	32	96	99.8
Dwr Cymru Welsh Water	River Cynon	Penrhiwceiber Point D CSO	49	70	99.6
Dwr Cymru Welsh Water	River Cynon	NEWTOWN COMMUNITY HALL CSO	34	63	99.7
Dwr Cymru Welsh Water	River Cynon	CSO at Hirwaun Trenant No 66 Rear of Garden	6	51	1.4
Dwr Cymru Welsh Water	River Cynon	HIRWAUN - REAR OF BUTE TERRACE	28	48	99.8
Dwr Cymru Welsh Water	River Cynon	Aberaman Curre St CSO	28	44	99.2
Dwr Cymru Welsh Water	River Cynon	Elizabeth St CSO	22	34	53.2
Dwr Cymru Welsh Water	River Cynon	CSO at Cwmbach Side of Police House	14	30	99.8
Dwr Cymru Welsh Water	River Cynon	ABERNANT RUGBY CLUB CSO	29	23	100
Dwr Cymru Welsh Water	River Cynon	Canal Rd CSO, Cwmbach	9	22	99.7
Dwr Cymru Welsh Water	River Cynon	CSO at Rear of No12 Bonhaul, Cwmbach	8	20	99.9
Dwr Cymru Welsh Water	River Cynon	Cwmbach Sion Terrace No 11 CSO	13	19	99.7
Dwr Cymru Welsh Water	River Cynon	Penywaun - Rear Of 37/39 Erw L	27	17	96.7
Dwr Cymru Welsh Water	River Cynon	Cwmbach SPS	7	13	99.8
Dwr Cymru Welsh Water	River Cynon	CSO at Aberaman	8	7	99.6
Dwr Cymru Welsh Water	River Cynon	No. 29 Maeshyfryd CSO, Cwmbach	13	6	100
Dwr Cymru Welsh Water	River Cynon	Abercwmboi Parkview Capcoch Infant School CSO	6	4	100
Dwr Cymru Welsh Water	River Cynon	No 1 Wellington St CSO, Robertstown	4	1	88.3
Dwr Cymru Welsh Water	River Cynon	CSO at Rear Of St Winifreds Church Hirwa	1	0	100
Dwr Cymru Welsh Water	River Cynon	Cwmpennar CSO, Adj Low Rd, Mountain Ash	0	0	9.2
Dwr Cymru Welsh Water	River Cynon	Abercynon Rugby Club CSO	0	0	99.5
Dwr Cymru Welsh Water	River Cynon	TOWN HALL	0	0	99.9
Dwr Cymru Welsh Water	River Cynon	CSO at Cwmbach Bryngolwg No 45	0	0	70
Dwr Cymru Welsh Water	River Cynon	CSO at Hirwaun Trenant No70 Rear of Garden	0	0	0
Dwr Cymru Welsh Water	River Cynon	No 10 Hamilton St CSO, Mountain Ash	0	0	40.7
Dwr Cymru Welsh Water	River Cynon	CSO Meadow Street Pontycymmer	0	0	30
Dwr Cymru Welsh Water	River Cynon	Pentre - Llewellyn Street CSO	0	0	99.7

River Cynon polluted by sewage 1,549 times in 2023 - lasting 10,299 hours

32 Sites polluted by Dwr Cymru Welsh Water

Pollution Summary 2023

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