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Pollution Summary 2024

Here are all the reported sewage overflow totals for River Dee in 2024. 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 Dee	BANGOR ON DEE STW	104	1,488	99.9
Dwr Cymru Welsh Water	River Dee	BALA WWTW	132	1,286	100
Dwr Cymru Welsh Water	River Dee	LLANGOLLEN WWTW	74	736	99.9
Dwr Cymru Welsh Water	River Dee	FIVE FORDS STW	65	710	99.8
Dwr Cymru Welsh Water	River Dee	CEFN MAWR WwTW	74	521	99.7
Dwr Cymru Welsh Water	River Dee	DEE LANE CSO	101	446	99.9
Dwr Cymru Welsh Water	River Dee	CHESTER WASTEWATER TREATMENT WORKS	65	446	99.9
Dwr Cymru Welsh Water	River Dee	Ashgrove PS Shotton	87	442	99.9
Dwr Cymru Welsh Water	River Dee	OVERTON WWTW	122	367	100
Dwr Cymru Welsh Water	River Dee	MARSH FARM PUMPING STATION	31	312	99.8
Dwr Cymru Welsh Water	River Dee	Eyton Grove SPS	21	253	99.9
Dwr Cymru Welsh Water	River Dee	CORWEN WWTW FINAL EFFLUENT	38	237	99.8
Dwr Cymru Welsh Water	River Dee	CSO at Cynwyd STW	79	236	99.8
Dwr Cymru Welsh Water	River Dee	Higher Kinnerton SPS	39	234	99.8
Dwr Cymru Welsh Water	River Dee	LITTLE ROODEE CSO	60	199	99.9
Dwr Cymru Welsh Water	River Dee	Corwen Corner Station Yard CSO	34	183	65.8
Dwr Cymru Welsh Water	River Dee	CSO AT CHESTER STW	62	155	99.9
Dwr Cymru Welsh Water	River Dee	DEVA TERRACE CSO	87	155	97.8
Dwr Cymru Welsh Water	River Dee	CHESTER WEIR (SOUTH BANK) CSO	39	147	96.7
Dwr Cymru Welsh Water	River Dee	THE GROVES CSO	50	134	99.9
Dwr Cymru Welsh Water	River Dee	Abbey Road CSO	51	131	99.9
Dwr Cymru Welsh Water	River Dee	CRANE STREET CSO	53	121	97.7
Dwr Cymru Welsh Water	River Dee	SAUGHALL VILLAGE CSO	31	116	93
Dwr Cymru Welsh Water	River Dee	Chirk O/S 24 Offa St CSO	19	105	98.8
Dwr Cymru Welsh Water	River Dee	PEN Y MAES PUMPING STATION	36	96	99.9
Dwr Cymru Welsh Water	River Dee	THE DINGLE CHESTER CSO	113	62	92.6
Dwr Cymru Welsh Water	River Dee	Rhosymedre Park Rd CSO	14	61	97.9
Dwr Cymru Welsh Water	River Dee	BOATHOUSE INN CSO	32	55	99.9
Dwr Cymru Welsh Water	River Dee	GROSVENOR BRIDGE CSO	25	55	99.4
Dwr Cymru Welsh Water	River Dee	Newbridge SPS	12	38	99.4
Dwr Cymru Welsh Water	River Dee	SALTNEY SEWERAGE CHESTER STREET PS	23	31	99.4
Dwr Cymru Welsh Water	River Dee	GREENFIELD IND EST NO 1 HOLYWELL	7	29	70.1
Dwr Cymru Welsh Water	River Dee	SANDY LANE COMBINED SEWER OVERFLOW	12	26	99.9
Dwr Cymru Welsh Water	River Dee	Holt PS	17	14	99.8
Dwr Cymru Welsh Water	River Dee	Llangollen Riverside Park Printing Works CSO	3	14	84.8
Dwr Cymru Welsh Water	River Dee	Park Avenue CSO	3	12	99.9
Dwr Cymru Welsh Water	River Dee	EDGAR PARK CSO	16	9	98.2
Dwr Cymru Welsh Water	River Dee	GAYTON PARKWAY CSO	11	7	98.9
Dwr Cymru Welsh Water	River Dee	CSO at Rear Hamden Way Plas Madoc	8	7	98.9
Dwr Cymru Welsh Water	River Dee	WEST STREET CSO	12	6	99.9
Dwr Cymru Welsh Water	River Dee	THE DINGLE COMBINED SEWER OVERFLOW	1	4	24.8
Dwr Cymru Welsh Water	River Dee	Llangollen East St CSO	7	3	85.9
Dwr Cymru Welsh Water	River Dee	CONNAHS QUAY DEVA AVENUE - CSO	12	3	41.6
Dwr Cymru Welsh Water	River Dee	Royal Hotel CSO	2	2	99.9
Dwr Cymru Welsh Water	River Dee	Connahs Quay Dock Road PS	3	2	99.8
Dwr Cymru Welsh Water	River Dee	Llangollen Chruch St CSO	2	0	99.4
Dwr Cymru Welsh Water	River Dee	Connahs Quay Linden Avenue - CSO	0	0	0
Dwr Cymru Welsh Water	River Dee	OLD DEE BRIDGE (NORTH BANK) CSO	0	0	99.9
Dwr Cymru Welsh Water	River Dee	REAR OF 22 CURZON PARK NORTH CSO	0	0	99.2
Dwr Cymru Welsh Water	River Dee	HANDBRIDGE GREENBANK SPS	0	0	99.9
Dwr Cymru Welsh Water	River Dee	CHESTER BELGRAVE PARK SPS	0	0	99.9
Dwr Cymru Welsh Water	River Dee	Llangollen Victoria Prom Riverside CSO	0	0	98.9

River Dee polluted by sewage 1,889 times in 2024 - lasting 9,711 hours

46 Sites polluted by Dwr Cymru Welsh Water

Pollution Summary 2024

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