Top of the Poops | Constituency Sewage Map

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You're looking at the totals that we have calculated for sewage in Clwyd East so far for 2026. It is an estimate, based on very poor quality live data from the Water Companies. The water companies report their sewage to the Environment Agency every year in April. You can see the last reported year in the other page

What's a potential overflow? If the CSO goes 'Offline' while its Overflowing, we don't know if it stopped overflowing until we get a 'Stop' event.

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Company	Site Name	Receiving Waterway	Overflow Days	Total Duration (hours)	Offline/Potential Pollution
Dwr Cymru Welsh Water	Ruthin WwTW Overflow	River Clwyd	50	920 h 47m	-
Dwr Cymru Welsh Water	Llangollen WwTW Storm Overflow	River Dee	36	612 h 15m	-
Dwr Cymru Welsh Water	Bronallt Leeswood Storm Oveerflow	Unnamed Tributary of Afon Alyn	30	504 h 30m	-
Dwr Cymru Welsh Water	Chambers Lane Mercia Drive Junction Storm Overflow No2	Tributary of Afon Alyn	28	347 h 39m	-
Dwr Cymru Welsh Water	Dyserth WwTW Storm Overflow	Afon Glanffyddion	22	278 h 30m	-
Dwr Cymru Welsh Water	Mold WwTW Storm Overflow	Tributary of Afon Alyn	24	262 h	-
Dwr Cymru Welsh Water	Greenfield Road Holywell Storm Overflow	Greenfield Valley "Holywell" stream	27	210 h 5m	-
Dwr Cymru Welsh Water	Gwydelwern Storm Overflow	Afon Camddwr	12	173 h 45m	-
Dwr Cymru Welsh Water	Mostyn Coastal Road Storm Overflow	Tributary of the Dee estuary	9	129 h 23m	-
Dwr Cymru Welsh Water	Llanarmon Yn Ial WwTW Overflow	River Alyn	18	113 h 22m	-
Dwr Cymru Welsh Water	Trefnant WwTW Overflow	River Clwyd	16	77 h 45m	-
Dwr Cymru Welsh Water	Llanasa WwTW Storm Overflow	Unnamed Watercourse	4	76 h 15m	-
Dwr Cymru Welsh Water	Llanfair Dyffryn Clwyd WwTW Storm Overflow	Dwr Ial	14	70 h 15m	-
Dwr Cymru Welsh Water	A549 Mold Storm Overflow	Tributary of the Afon Alyn	12	60 h 30m	-
Dwr Cymru Welsh Water	Llangollen Queen Street Storm Overflow	River Cyflymen	15	55 h 15m	-
Dwr Cymru Welsh Water	Wats Duke Avenue Storm Overflow	Tributary of Afon Alyn	6	52 h 45m	-
Dwr Cymru Welsh Water	Northop WwTW Settled Storm Overflow	Northop Brook	10	41 h 27m	-
Dwr Cymru Welsh Water	Fairfield Avenue Ffynnongroew Overflow	Ffynnongroew Drain	2	38 h	-
Dwr Cymru Welsh Water	Llanferres Storm Overflow	Tributary of Afon Alun	5	31 h 45m	-
Dwr Cymru Welsh Water	Mercia Drive Mold Storm Overflow	Surface Water Sewer	8	28 h 7m	-
Dwr Cymru Welsh Water	Off Church Terrace Llandegla Storm Overflow	River Alyn	6	28 h	-
Dwr Cymru Welsh Water	Talacre Road Storm Overflow	Maescoed Drains	2	22 h 15m	-
Dwr Cymru Welsh Water	Bridge Street No 2 Storm Overflow	River Dee	9	21 h 15m	-
Dwr Cymru Welsh Water	Llanerch-Y-Mor A548 Storm Overflow	Llanerchymor Gutter	4	14 h 43m	-
Dwr Cymru Welsh Water	Corwen Road Junction Pontblyddyn Storm Overflow	River Alyn	8	13 h 30m	-
Dwr Cymru Welsh Water	Llanasa Headworks Storm Overflow	Prestatyn Gutter	1	12 h 15m	-
Dwr Cymru Welsh Water	Bryn Awelon Mold Storm Overflow	Tributary of Black Brook	3	9 h 32m	-
Dwr Cymru Welsh Water	Ffordd Penrhwylfa Meliden Storm Overflow	Prestatyn Gutter	1	9 h 27m	-
Dwr Cymru Welsh Water	Greenfield Knitmesh Overflow	Afon Marsiandwr	1	8 h 30m	-
Dwr Cymru Welsh Water	Village Road Northop Hall Storm Overflow	Wepre Brook	3	7 h	-
Dwr Cymru Welsh Water	Abbey Road Storm Overflow	River Dee	5	7 h	-
Dwr Cymru Welsh Water	Bromfield Lane Mold Storm Overflow	Tributary of Afon Alyn	3	6 h 30m	-
Dwr Cymru Welsh Water	Pontblyddyn Dingle Road Storm Overflow	River Alyn	1	4 h 30m	-
Dwr Cymru Welsh Water	Gladstone Street Glanrafon Road Storm Overflow	Unnamed Tributary of the River Alyn	2	4 h	-
Dwr Cymru Welsh Water	Fford Ddyfrdwy Maes Pennant A Storm Overflow	Tributary of the Dee Estuary	6	3 h 51m	-
Dwr Cymru Welsh Water	Pen Y Maes Road Holywell Storm Overflow	Unnamed Tributary of the Dee Estuary	1	3 h 27m	-
Dwr Cymru Welsh Water	Milford Street and Bro Alun Mold Overflow	River Alyn	2	3 h	-
Dwr Cymru Welsh Water	Nant Y Coed Pen Y Maes Overflow	Unnamed Triutary of the River Dee	1	2 h 30m	-
Dwr Cymru Welsh Water	Berwyn Street Storm Overflow	River Dee via surface water sewer	1	1 h	-
Dwr Cymru Welsh Water	Park Avenue Storm Overflow	River Dee	1	0 h 45m	-
Dwr Cymru Welsh Water	Bridge Street Storm Overflow No1	River Dee	1	0 h 45m	-
Dwr Cymru Welsh Water	Morfa Camp Overflow	New Drain Talacre	1	0 h 45m	-
Dwr Cymru Welsh Water	Greenfield WwTW Storm Overflow	Estuarial Waters of the River Dee	2	0 h 30m	-
Dwr Cymru Welsh Water	Brynford Crooked Horn Overflow	Tributary of Afon Chwiler	2	0 h 30m	-
Dwr Cymru Welsh Water	A548 Road Bridge Storm Overflow	Greenfield Valley "Holywell" stream	1	0 h 30m	-
Dwr Cymru Welsh Water	Dyserth WwTW Inlet Overflow	Glanfyddion Stream	1	0 h 15m	-
Dwr Cymru Welsh Water	The Boulevard Prestatyn Storm Overflow	Ditch discharging to Prestatyn Gutter	1	0 h 11m	-
Dwr Cymru Welsh Water	Ysceifiog Storm Overflow	Tributary of Afon Chwiler	0	0 h	-
Dwr Cymru Welsh Water	Meliden Road Prestatyn Storm Overflow	Prestatyn Gutter	0	0 h	-
Dwr Cymru Welsh Water	Near Bagillt Road Greenfield Storm Overflow	River Dee	0	0 h	-
Dwr Cymru Welsh Water	Unknown	Unknown	0	0 h	-
Dwr Cymru Welsh Water	Wat'sDyke Avenue Holywell Storm Overflow	Unnamed stream	0	0 h	-
Dwr Cymru Welsh Water	Wared Drive Northhop Hall Storm Overflow	Surface Water	0	0 h	-
Dwr Cymru Welsh Water	Pentre Halkyn Overflow	Unnamed Tributary of Nant-Y-Flint	0	0 h	-
Dwr Cymru Welsh Water	Ffynnongroew Tan Lan Bach Storm Overflow	Tan Lan Drains	0	0 h	-
Dwr Cymru Welsh Water	Ffordd Parc Bodnant Prestatyn Overflow	Railway Ditch	0	0 h	-
Dwr Cymru Welsh Water	Llygain-Y-Wern Pentre Halkyn Storm Overflow	Tributary of Nan Y Flint	0	0 h	-
Dwr Cymru Welsh Water	Junction of B5121 and A548 Greenfield Storm Overflow	Unnamed Stream	0	0 h	-
Dwr Cymru Welsh Water	Glanyrafon Terrace Storm Overflow	Afon y Garth	0	0 h	-
Dwr Cymru Welsh Water	Victoria Road Prestatyn Storm Overflow	Prestatyn Gutter	0	0 h	-
Dwr Cymru Welsh Water	Fford Ddyfrdwy Maes Pennant B Storm Overflow	Drain Tributary of the Dee Estuary	0	0 h	-
Dwr Cymru Welsh Water	Gas Lane Mold Storm Overflow	Unnamed Tributary of Afon Alyn	0	0 h	-
Dwr Cymru Welsh Water	Gwespyr Storm Overflow	Unnamed stream	0	0 h	-
Dwr Cymru Welsh Water	Unknown	Unknown	0	0 h	-
Dwr Cymru Welsh Water	Llangollen Church Street Storm Overflow	River Dee	0	0 h	-
Dwr Cymru Welsh Water	Talacre Argoed Station Road Overflow	Gutter Fawr	0	0 h	-
Dwr Cymru Welsh Water	Prestatyn The Mall Storm Overflow	Prestatyn Gutter	0	0 h	-
Dwr Cymru Welsh Water	Llangollen Riverside Park Storm Overflow	River Dee	0	0 h	-
Dwr Cymru Welsh Water	Nannerch Storm Overflow	Tributary of River Wheeler	0	0 h	-
Dwr Cymru Welsh Water	Chambers Lane Mercia Drive Junction Storm Overflow	Tributary of Afon Alun	0	0 h	-
Dwr Cymru Welsh Water	Llandyrnog WwTW Storm Overflow	River Clwyd	0	0 h	-
Dwr Cymru Welsh Water	Mostyn Docks Overflow	Tributary of the River Dee	0	0 h	-
Dwr Cymru Welsh Water	Mostyn Coast Road Overflow	Tributary of the River Dee	0	0 h	-
Dwr Cymru Welsh Water	Llangollen West Street Storm Overflow	River Dee	0	0 h	-
Dwr Cymru Welsh Water	Llangollen East Street Storm Overflow	River Dee	0	0 h	-
Dwr Cymru Welsh Water	Maes Y Dre Mold Storm Overflow	River Alyn	0	0 h	-
Dwr Cymru Welsh Water	Victoria Terrace Mold Storm Overflow	River Alyn	0	0 h	-
Dwr Cymru Welsh Water	Fford Argoed Fields Storm Overflow	River Alyn	0	0 h	-
Dwr Cymru Welsh Water	Leeswood Bethania Storm Overflow	Nant Brook	0	0 h	-
Dwr Cymru Welsh Water	Bryn Coch Lane Mold Storm Overflow	Unnamed Tributary of Afon Alyn	0	0 h	-
Dwr Cymru Welsh Water	Picton Road Pen Y Ffordd Storm Overflow	Unnamed stream	0	0 h	-
Dwr Cymru Welsh Water	Llangollen Victoria Prom Storm Overflow	River Dee	0	0 h	-
Dwr Cymru Welsh Water	Southwest of York Close Prestatyn Overflow	Rhyl Cut	0	0 h	-
Dwr Cymru Welsh Water	Greenfield Terminal Overflow	Holywell Stream	0	0 h	-
Dwr Cymru Welsh Water	Bastion Road Prestatyn Overflow	Prestatyn Gutter	0	0 h	-

It's a Dirty Business

Clwyd East - Live Sewage

Polluted by sewage 4,270 hours in 2026 so far..

Clwyd East - Live Sewage

Which Year?

Select Another Constituency

View Annual Sewage Data

Take Action

Constituencies near Clwyd East

Daily Data

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Totals so far

Data Sources & Accuracy

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It's a Dirty Business

Clwyd East - Live Sewage Polluted by sewage 4,270 hours in 2026 so far..

Clwyd East - Live Sewage

Which Year?

Select Another Constituency

View Annual Sewage Data

Take Action

Constituencies near Clwyd East

Daily Data

We need your support!

Totals so far

Data Sources & Accuracy

Media Queries

Please Support Us

Clwyd East - Live Sewage

Polluted by sewage 4,270 hours in 2026 so far..