Bath

Polluted by sewage 1,590 times in 2025 lasting 3,306 hours

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

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Totals for Bath in 2025

83 Sites polluted by Wessex Water

1,590 sewage dumps

3,306 hours duration

Sewage pollution map of Bath: 3,306 hours in 2025

That's 4.59 months. On average 4.4 times a day

Change Over Time

Constituency for Bath

Nearby Constituencies

Waterways in Bath

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Pollution Summary 2025

Here are all the reported sewage overflow totals for Bath in 2025. 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 place 1 of the total 96 CSO Combined Sewage Overflow - a device that, when operating, pours combined rainwater & sewage into a waterway locations had reporting enabled for less than half the year.

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Wessex Water	River Avon	LONDON ROAD BUS DEPOT CSO	31	317	99.8
Wessex Water	River Avon	WINDSOR COURT CSO	22	270	100
Wessex Water	River Avon	MIDLAND ROAD PUMPING STATION	23	194	100
Wessex Water	River Avon	BROAD QUAY CSO	27	167	100
Wessex Water	River Avon Via Sws	LONDON ROAD WEST CSO	27	166	100
Wessex Water	River Avon	MILL LANE COMBINED SEWER OVERFLOW	23	145	98.2
Wessex Water	River Avon	WESTON LOCK RETAIL PARK	18	144	100
Wessex Water	River Avon	RECREATION GROUND CSO	58	138	100
Wessex Water	River Avon	ROSSITER ROAD CSO	14	127	100
Wessex Water	River Avon	BRASSMILL LANE (EAST) CSO	18	114	100
Wessex Water	River Avon	PARADE GARDENS STORM OVERFLOW	14	109	100
Wessex Water	River Avon Via Sws	TRAFALGAR ROAD CSO	53	107	92.3
Wessex Water	River Avon	SOUTH PARADE CSO	20	99	100
Wessex Water	River Avon	GREEN PARK SYPHON INLET CSO	11	97	82.8
Wessex Water	River Avon	OPPOSITE NO 1, SPRING GARDENS ROAD	12	88	100
Wessex Water	River Avon	STATION ROAD CSO	16	78	97.9
Wessex Water	River Avon	CHATHAM ROW CSO	49	69	100
Wessex Water	River Avon	TOWPATH COMBINED SEWER OVERFLOW	20	61	100
Wessex Water	River Avon	ENTRY HILL GARDENS CSO	65	59	100
Wessex Water	River Avon	ROCKCLIFFE ROAD CSO	16	54	95.9
Wessex Water	River Avon Via Sws	AVON STREET CSO	48	48	100
Wessex Water	Midford Brook	MILL LANE COMBINED SEWER OVERFLOW	49	45	95.4
Wessex Water	River Avon	LOWER BRISTOL ROAD	6	42	100
Wessex Water	River Avon Via Sws	PRIOR PARK ROAD CSO	53	35	100
Wessex Water	River Avon	MOORLAND ROAD CSO	46	34	100
Wessex Water	River Avon Via Sws	OLDFIELD LANE CSO	51	30	100
Wessex Water	River Avon	ENGLISHCOMBE LANE CSO	49	28	99.9
Wessex Water	River Avon	WIDCOMBE BAPTIST CHURCH CSO	24	27	100
Wessex Water	River Avon Via Sws	BLOOMFIELD ROAD CSO	46	26	98
Wessex Water	River Avon	NEWBRIDGE ROAD CSO	44	26	100
Wessex Water	River Avon	UPPER BRISTOL ROAD CSO	50	25	96.9
Wessex Water	River Avon	LADYMEAD HOUSE CSO	25	24	100
Wessex Water	River Avon Via Sws	LANSDOWN LANE COMBINED SEWER O'FLOW	14	24	97.5
Wessex Water	River Avon	ST JOHNS SCHOOL CSO	18	19	100
Wessex Water	River Avon Via Sws	RAILWAY PLACE CSO	7	18	96.1
Wessex Water	River Avon Via Sws	HISCOCKS DRIVE CSO	22	17	99.9
Wessex Water	River Avon	WELLSWAY COMBINED SEWER OVERFLOW	44	17	100
Wessex Water	River Avon	HORTON HOUSE CSO	18	16	100
Wessex Water	River Avon	WALCOT TERRACE CSO	12	13	100
Wessex Water	Lam Brook Via Sws	LARKHALL TERRACE CSO	21	13	92.5
Wessex Water	River Avon Via Sws	BELLOTTS ROAD CSO	20	13	95.3
Wessex Water	Lam Brook	MONTAGUE HOUSE CSO	12	13	100
Wessex Water	Horsecombe Brook	SUMMER LANE COMBINED SEWER OVERFLOW	27	12	100
Wessex Water	River Avon Via Sws	BRASSMILL LANE (EAST) CSO	6	11	100
Wessex Water	Lam Brook	J HUGHES COTTAGE CSO	7	10	100
Wessex Water	River Avon Via Sws	BECKHAMPTON ROAD CSO	21	8	99.7
Wessex Water	River Avon Via Sws	CHURCHILL BRIDGE ISLAND CSO	20	6	100
Wessex Water	River Avon Via Sws	WESTMORELAND ROAD CSO	8	6	98
Wessex Water	River Avon Via Sws	LYNCOMBE VALE CSO	15	5	91.1
Wessex Water	River Avon	CANAL TERRACE CSO	15	5	98.6
Wessex Water	River Avon	CATTLE MARKET	7	5	94.9
Wessex Water	River Avon Via Sws	BEWDLEY ROAD CSO	15	4	93.9
Wessex Water	River Avon Via Sws	LOCKSBROOK ROAD CSO	16	4	99.8
Wessex Water	River Avon Via Sws	LUCKLANDS ROAD COMBINED SEWER OF	14	4	100
Wessex Water	River Avon	RUSH HILL CSO	20	4	100
Wessex Water	River Avon	FUNERAL DIRECTORS CSO	12	4	97
Wessex Water	River Avon Via Sws	SOUTHGATE STREET CSO	15	3	100
Wessex Water	River Avon	ALDRIDGES CSO	13	3	94.1
Wessex Water	River Avon	SCOUT SITE COMBINED SEWER OVERFLOW	4	3	32.3
Wessex Water	River Avon Via Sws	LYNCOMBE VALE CSO	18	3	93.2
Wessex Water	River Avon	WEIRSIDE COURT CSO	3	2	99.9
Wessex Water	River Avon	WALCOT STREET COMBINED SEWER OF	7	2	94.9
Wessex Water	River Avon Via Sws	24 TO 39 HAZEL GROVE	11	2	100
Wessex Water	River Avon Via Sws	FOX HILL WOODLANDS COTTAGE CSO	6	1	100
Wessex Water	River Avon Via Sws	DORSET CLOSE CSO	9	1	96.9
Wessex Water	River Avon Via Sws	PRIOR PARK ROAD CSO	9	1	97.3
Wessex Water	River Avon Via Sws	WIDCOMBE RISE CSO	12	0	100
Wessex Water	River Avon Via Sws	FIELDINGS ROAD CSO	3	0	95.1
Wessex Water	River Avon	ST JOHN'S ROAD CSO	5	0	100
Wessex Water	River Avon Via Sws	SOUTHLANDS COMBINED SEWER OVERFLOW	6	0	86.7
Wessex Water	River Avon	WELLSWAY	11	0	100
Wessex Water	Lam Brook Via Sws	BAYTREE ALLOTMENTS CSO	8	0	100
Wessex Water	River Avon	CLEVELAND BRIDGE CSO	7	0	100
Wessex Water	Midford Brook	MIDFORD COMBINED SEWER OVERFLOW	2	0	100
Wessex Water	River Avon	HUNGERFORD ROAD CSO	3	0	97.5
Wessex Water	River Avon	LYMORE GARDENS CSO	2	0	100
Wessex Water	A Culverted River Avon	WELLSWAY COMBINED SEWER OVERFLOW	6	0	100
Wessex Water	River Avon	ROCKCLIFFE AVENUE CSO	1	0	100
Wessex Water	River Avon Via Sws	223 HAYCOMBE DRIVE	2	0	100
Wessex Water	River Avon Via Sws	ENGLISHCOMBE LANE CSO	3	0	92.6
Wessex Water	River Avon	LOOP ROAD CSO	3	0	100
Wessex Water	River Avon	RUSH HILL	1	0	100
Wessex Water	River Avon	11 ST JOHN'S ROAD CSO	1	0	99.1
Wessex Water	River Avon Via Sws	BLOOMFIELD RD JUNCTION CSO	0	0	100
Wessex Water	River Avon	BRASSMILL LANE CSO	0	0	100
Wessex Water	River Avon	CSO ADJACENT TO 22-23 HAZEL GROVE	0	0	100
Wessex Water	River Avon Via Sws	DARTMOUTH AVENUE CSO	0	0	98.6
Wessex Water	Lam Brook Via Sws	FAIRFIELD AVENUE CSO	0	0	88.7
Wessex Water	River Avon	GRAND PARADE CSO	0	0	100
Wessex Water	River Avon	GROVE STREET CSO	0	0	100
Wessex Water	River Avon Via Sww	MILLMEAD ROAD CSO	0	0	100
Wessex Water	River Avon Via Sws	MOUNT ROAD CSO	0	0	100
Wessex Water	River Avon	REAR OF 34 WELLSWAY	0	0	96.1
Wessex Water	River Avon	SOUTHDOWN ROAD CSO	0	0	100
Wessex Water	Kennet	WARMINSTER ROAD CSO	0	0	100
Wessex Water	River Avon Via Sws	WHITE WAY ROAD CSO	0	0	100

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

Annual figures up to and including 2025 come from official water company returns. The 2026 figure is our own estimate, derived continuously from the companies' live data feeds.

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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