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Area of Outstanding Natural Beauty

Blackdown Hills - 2025 Sewage

Polluted by sewage 4,001 hours in 2025 , monitoring offline 1,746 hours

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Area of Outstanding Natural Beauty

Totals for 2025

Sewage4,001 hours

Monitoring offline1,746 hours

Potential pollution0 hours

Storm overflows32

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Sewage pollution map of Blackdown Hills, an Area of Outstanding Natural Beauty, showing where sewage is discharged

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Daily Data - when it rained, and when they spilled

Square = rainfall none → heavy

Drop = sewage minutes → all day

Potential pollution Monitoring offline

Jan - 852 hours

Feb - 433 hours

Mar - 68 hours

Apr - 108 hours , 118 offline

May - 0 hours , 47 offline

Jun - 2 hours , 518 offline

Jul - 1 hours , 490 offline

Aug - 4 hours

Sept - 25 hours

Oct - 20 hours

Nov - 669 hours , 572 offline

Dec - 1,813 hours

Daily data is experimental and data is not guaranteed to be accurate. Please inform us of any issue, we will fix.

Storm overflows in and around Blackdown Hills

Company	Site Name	Receiving Waterway	Overflow Days	Total Duration (hours)	Offline/Potential Pollution
South West Water	DALWOOD SPST_PSCSOEO_DALWOOD	Corry Brook	39	755h 5m	-
South West Water	YARCOMBE STW_SO_YARCOMBE	Unknown	53	638h 22m	-
South West Water	BROADHEMBURY SPS_PSCSOEO_BROADHEMBURY	River Tale	30	573h 18m	-
South West Water	STOCKLAND STW_SSO_STOCKLAND	Watercourse	33	416h	-
South West Water	DALWOOD SPST_PSCSOEO_DALWOOD	Corry Brook	24	290h 4m	1,009 h
South West Water	WILMINGTON STW_SSO_WILMINGTON	Unknown	19	242h 20m	-
South West Water	BROADHEMBURY SPS_PSCSOEO_BROADHEMBURY	River Tale	14	195h 50m	-
South West Water	YARCOMBE STW_SO_YARCOMBE	Unknown	23	179h 34m	-
South West Water	WILMINGTON STW_SSO_WILMINGTON	Unknown	15	177h 6m	-
South West Water	HEMYOCK STW_SO_HEMYOCK	River Culm	11	84h 11m	-
South West Water	DUNKESWELL STW_SO_DUNKESWELL	River Madford	14	80h 4m	-
Wessex Water	Unknown	Unknown	8	55h 39m	-
South West Water	CHARD ROAD_CSO_AXMINSTER	River Axe	17	50h 34m	47 h
South West Water	DUNKESWELL STW_SO_DUNKESWELL	River Madford	3	39h 32m	-
South West Water	DUNKESWELL STW_SSO_DUNKESWELL	River Madford	4	38h 30m	-
South West Water	DUNKESWELL SPS_PSCSOEO_DUNKESWELL	Dunkeswell Stream	10	36h 45m	-
South West Water	CHARD ROAD_CSO_AXMINSTER	River Axe	9	35h 50m	-
South West Water	STOCKLAND STW_SSO_STOCKLAND	Watercourse	12	23h 39m	-
South West Water	HEMYOCK SPST_PSCSOEO_HEMYOCK	River Culm	6	18h 45m	-
South West Water	HEMYOCK STW_SO_HEMYOCK	River Culm	13	18h 18m	-
South West Water	CHURCHINFORD STW_SSO_CHURCHINFORD	River Otter	7	17h 41m	118 h
South West Water	DUNKESWELL STW_SSO_DUNKESWELL	River Madford	3	13h 25m	-
South West Water	DUNKESWELL SPS_PSCSOEO_DUNKESWELL	Dunkeswell Stream	8	13h 7m	-
Wessex Water	TAUNTON MILL LANE CORFE NO 2	Broughton Brook	2	2h 46m	-
South West Water	BUCKLAND ST MARY STW_SO_BUCKLAND ST MARY	To River Yarty	1	1h 59m	-
South West Water	BUCKLAND ST MARY STW_SO_BUCKLAND ST MARY	To River Yarty	2	1h 25m	-
Wessex Water	TAUNTON MILL LANE CORFE NO 2	Broughton Brook	2	1h 4m	-
South West Water	HEMYOCK SPST_PSCSOEO_HEMYOCK	River Culm	0	0h	-
South West Water	CHURCHINFORD STW_SSO_CHURCHINFORD	River Otter	0	0h	-
South West Water	CASTLE PARK_CSO_HEMYOCK	Stream	0	0h	572 h
South West Water	CASTLE PARK_CSO_HEMYOCK	Stream	0	0h	-
Wessex Water	Unknown	Unknown	0	0h	-

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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Contains Water UK National Storm Overflow Hub Data CC-BY-SA 4.0 and analysis © 2025 Top-Of-The-Poops

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