Chester

Polluted by sewage 1,074 times in 2024 lasting 3,651 hours

Monitoring fell below 50% in some locations so could be more

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Totals for Chester in 2024

27 Sites polluted by Dwr Cymru Welsh Water

1,074 sewage dumps

3,651 hours duration

That's 5.07 months. On average 2.9 times a day

Change Over Time

Waterways in Chester

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Pollution Summary 2024

Here are all the reported sewage overflow totals for Chester in 2024. Sometimes sewage can be being dumped for months at a time.

Reporting refers to how much of the time the monitoring was active. In this locality 1 of the total 34 CSO locations had reporting enabled for less than half the year.

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Dwr Cymru Welsh Water	Higher Ferry Drain	BRETTON PS	83	912	99.9
Dwr Cymru Welsh Water	River Dee	CHESTER WASTEWATER TREATMENT WORKS	65	446	99.9
Dwr Cymru Welsh Water	River Dee	DEE LANE CSO	101	446	99.9
Dwr Cymru Welsh Water	Balderton Brook	SANDY LANE SPS CELYN CRESCENT SALTN	108	305	98
Dwr Cymru Welsh Water	River Dee	LITTLE ROODEE CSO	60	199	99.9
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	Highfield Drain	PARKGATE ROAD PS CHESTER ,	49	132	99.9
Dwr Cymru Welsh Water	River Dee	CRANE STREET CSO	53	121	97.7
Dwr Cymru Welsh Water	Dee	ECCLESTON PUMPING STATION	15	88	99.9
Dwr Cymru Welsh Water	Bache Brook	CHESTER TROOPER INN CSO	37	71	99.9
Dwr Cymru Welsh Water	River Dee	THE DINGLE CHESTER CSO	113	62	92.6
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	Bache Brook	WEST OF WEALSTONE LANE CSO	21	45	98.6
Dwr Cymru Welsh Water	River Dee	SALTNEY SEWERAGE CHESTER STREET PS	23	31	99.4
Dwr Cymru Welsh Water	River Dee	SANDY LANE COMBINED SEWER OVERFLOW	12	26	99.9
Dwr Cymru Welsh Water	Caldy Brook	THE RAKE AND PIKLE PUMPING STATION	3	23	99.8
Dwr Cymru Welsh Water	River Dee	EDGAR PARK CSO	16	9	98.2
Dwr Cymru Welsh Water	Finchett'S Gutter	MOSTON ROAD CSO	3	9	99.4
Dwr Cymru Welsh Water	Bache Brook	BACHE TANKS CSO	1	5	99.9
Dwr Cymru Welsh Water	Caldy Brook	CHRISTLETON WHITCHURCH ROAD PS	12	5	99.8
Dwr Cymru Welsh Water	River Dee	THE DINGLE COMBINED SEWER OVERFLOW	1	4	24.8
Dwr Cymru Welsh Water	Bache Brook	CHESTER PARKGATE COURT SPS	2	0	99.5
Dwr Cymru Welsh Water	Balderton Brook	MARLSTON-CUM-LACHE PUMPING STATION	1	0	99.9
Dwr Cymru Welsh Water	Balderton Brook	Saltney Bridge Street CSO	0	0	98.5
Dwr Cymru Welsh Water	Finchett'S Gutter	DALESIDE COMBINED SEWER OVERFLOW	0	0	98.7
Dwr Cymru Welsh Water	River Dee	OLD DEE BRIDGE (NORTH BANK) CSO	0	0	99.9
Dwr Cymru Welsh Water	River Dee	CHESTER BELGRAVE PARK SPS	0	0	99.9
Dwr Cymru Welsh Water	Caldy Brook	CHRISTLETON OLD WOMAN'S LANE CSO	0	0	99.9
Dwr Cymru Welsh Water	River Dee	HANDBRIDGE GREENBANK SPS	0	0	99.9
Dwr Cymru Welsh Water	River Dee	REAR OF 22 CURZON PARK NORTH CSO	0	0	99.2

Data Sources & Accuracy

EDM (Event Duration Monitoring) data and Consented Discharges to Controlled Waters with Conditions from Environment Agency & Data Map Wales, and Scottish Water

Experimental derived data from Thames Water API, Some data may be missing or inaccurate. Live sewage data from Stream Water API

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.

Analysing sewage pollution by the Water Industry

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Chester Polluted by sewage 1,074 times in 2024 lasting 3,651 hours Monitoring fell below 50% in some locations so could be more

Chester