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Pollution Summary 2023

Here are all the reported sewage overflow totals for River Dee 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 Dee	Settled Storm Overflow at Bangor-on-Dee Wastewater Treatment Works	72	859	100
Dwr Cymru Welsh Water	River Dee	BALA WWTW	80	836	100
Dwr Cymru Welsh Water	River Dee	LLANGOLLEN WWTW	73	816	99.7
Dwr Cymru Welsh Water	River Dee	Bala WwTW Storm Tank	55	641	100
Dwr Cymru Welsh Water	River Dee	CSO at Cynwyd STW	124	570	100
Dwr Cymru Welsh Water	River Dee	MARSH FARM PUMPING STATION	54	450	98.4
Dwr Cymru Welsh Water	River Dee	CEFN MAWR WwTW	39	444	99.8
Dwr Cymru Welsh Water	River Dee	DEE LANE CSO	100	373	100
Dwr Cymru Welsh Water	River Dee	CHESTER WASTEWATER TREATMENT WORKS	67	354	100
Dwr Cymru Welsh Water	River Dee	BANGOR ON DEE STW	24	338	99.9
Dwr Cymru Welsh Water	River Dee	FIVE FORDS STW	35	327	100
Dwr Cymru Welsh Water	River Dee	Corwen WwTW Settled Storm	29	259	100
Dwr Cymru Welsh Water	River Dee	Park Avenue CSO	25	214	100
Dwr Cymru Welsh Water	River Dee	LITTLE ROODEE CSO	57	147	100
Dwr Cymru Welsh Water	River Dee	CORWEN WWTW FINAL EFFLUENT	9	136	100
Dwr Cymru Welsh Water	River Dee	Abbey Road CSO	51	134	100
Dwr Cymru Welsh Water	River Dee	CHESTER WEIR (SOUTH BANK) CSO	58	126	94.1
Dwr Cymru Welsh Water	River Dee	Ashgrove PS Shotton	51	122	99.9
Dwr Cymru Welsh Water	River Dee	Corwen Corner Station Yard CSO	19	120	63
Dwr Cymru Welsh Water	River Dee	Higher Kinnerton SPS	24	111	100
Dwr Cymru Welsh Water	River Dee	THE GROVES CSO	50	106	99.9
Dwr Cymru Welsh Water	River Dee	DEVA TERRACE CSO	81	100	98.7
Dwr Cymru Welsh Water	River Dee	CSO AT CHESTER STW	55	93	100
Dwr Cymru Welsh Water	River Dee	CRANE STREET CSO	41	84	56.3
Dwr Cymru Welsh Water	River Dee	Holt PS	19	70	99.9
Dwr Cymru Welsh Water	River Dee	THE DINGLE CHESTER CSO	94	69	98.7
Dwr Cymru Welsh Water	River Dee	Chirk O/S 24 Offa St CSO	13	55	99.9
Dwr Cymru Welsh Water	River Dee	SAUGHALL VILLAGE CSO	21	51	94.3
Dwr Cymru Welsh Water	River Dee	BOATHOUSE INN CSO	29	51	100
Dwr Cymru Welsh Water	River Dee	PEN Y MAES PUMPING STATION	23	44	96.1
Dwr Cymru Welsh Water	River Dee	Rhosymedre Park Rd CSO	15	40	99.6
Dwr Cymru Welsh Water	River Dee	SANDY LANE COMBINED SEWER OVERFLOW	26	35	100
Dwr Cymru Welsh Water	River Dee	SALTNEY SEWERAGE CHESTER STREET PS	28	33	99.8
Dwr Cymru Welsh Water	River Dee	Eyton Grove SPS	6	12	100
Dwr Cymru Welsh Water	River Dee	EDGAR PARK CSO	9	9	58.5
Dwr Cymru Welsh Water	River Dee	Connahs Quay Dock Road PS	4	7	97.3
Dwr Cymru Welsh Water	River Dee	GROSVENOR BRIDGE CSO	5	6	99.9
Dwr Cymru Welsh Water	River Dee	GAYTON PARKWAY CSO	5	3	100
Dwr Cymru Welsh Water	River Dee	WEST STREET CSO	9	2	100
Dwr Cymru Welsh Water	River Dee	CSO at Rear Hamden Way Plas Madoc	4	2	99.8
Dwr Cymru Welsh Water	River Dee	CHESTER BELGRAVE PARK SPS	2	1	99.9
Dwr Cymru Welsh Water	River Dee	Royal Hotel CSO	3	1	100
Dwr Cymru Welsh Water	River Dee	OLD DEE BRIDGE (NORTH BANK) CSO	3	0	100
Dwr Cymru Welsh Water	River Dee	THE DINGLE COMBINED SEWER OVERFLOW	3	0	79.5
Dwr Cymru Welsh Water	River Dee	Llangollen Chruch St CSO	2	0	59.6
Dwr Cymru Welsh Water	River Dee	Newbridge SPS	2	0	100
Dwr Cymru Welsh Water	River Dee	Connahs Quay Linden Avenue - CSO	0	0	0
Dwr Cymru Welsh Water	River Dee	CONNAHS QUAY DEVA AVENUE - CSO	0	0	0
Dwr Cymru Welsh Water	River Dee	REAR OF 22 CURZON PARK NORTH CSO	0	0	100
Dwr Cymru Welsh Water	River Dee	HANDBRIDGE GREENBANK SPS	0	0	100
Dwr Cymru Welsh Water	River Dee	Llangollen Victoria Prom Riverside CSO	0	0	100
Dwr Cymru Welsh Water	River Dee	GREENFIELD IND EST NO 1 HOLYWELL	0	0	50.5
Dwr Cymru Welsh Water	River Dee	Llangollen Riverside Park Printing Works CSO	0	0	90.7
Dwr Cymru Welsh Water	River Dee	Llangollen East St CSO	0	0	41.7

Join Us 3rd November 2024 - London

River Dee polluted by sewage 1,598 times in 2023 - lasting 8,268 hours

46 Sites polluted by Dwr Cymru Welsh Water

Pollution Summary 2023

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