Area of Outstanding Natural Beauty

Suffolk Coast & Heaths - Live Sewage

Polluted by sewage 312 hours in 2026 , monitoring offline 638 hours , potential overflows 961 hours so far..

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Area of Outstanding Natural Beauty

Totals for Suffolk Coast & Heaths in 2026

Sewage312 hours

Monitoring offline638 hours

Potential pollution961 hours

Storm overflows36

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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 - 220 hours , 0 potential

Feb - 59 hours

Mar - 3 hours

Apr - 0 hours , 0 offline

May - 0 hours

Jun - 7 hours , 342 offline

Jul - 2 hours

Aug - 2 hours , 24 potential

Sept - 0 hours , 720 potential

Oct - 14 hours , 216 potential

Nov - 1 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 Suffolk Coast & Heaths

Company	Site Name	Receiving Waterway	Overflow Days	Total Duration (hours)	Offline/Potential Pollution
Anglian Water	HARWICH AND DOVERCOURT STW	Tidal River Stour	12	124h 34m	-
Anglian Water	Woodbridge Deben Road CSO	River Deben Tidal	17	86h 59m	-
Anglian Water	HOLBROOK STW	Holbrook Stream	18	46h 16m	445 h
Anglian Water	Woodbridge Quayside Transfer Pumping Station	River Deben	10	24h 39m	-
Anglian Water	WOODBRIDGE-STATION RD CSO	River Deben	9	11h 47m	192 h
Anglian Water	WOOLVERSTONE-MARINA TPS	River Orwell	4	10h 44m	-
Anglian Water	SOUTHWOLD-COMMON THE STW	Tidal River Blyth	4	3h 31m	-
Anglian Water	HARWICH AND DOVERCOURT STW	Tidal River Stour	8	1h 30m	960 h
Anglian Water	HOLBROOK STW	Holbrook Creek Estuary Stour	1	0h 43m	0 h
Anglian Water	SHOTLEY-OVERHALL FM STW	River Orwell T	1	0h 37m	-
Anglian Water	Southwold Marlborough Road Combined Sewer Overflow	Buss Creek	3	0h 32m	-
Anglian Water	Southwold Station Road Pumping Station	Buss Creek	1	0h 15m	0 h
Anglian Water	MARTLESHAM M BRIDGE SP	River Fynn	0	0h	-
Anglian Water	HOLBROOK STW	Holbrook Creek Estuary Stour	0	0h	-
Anglian Water	REYDON-THREE MARSH LN TPS	Buss Creek	0	0h	-
Anglian Water	HOLBROOK STW	Holbrook Stream	0	0h	-
Anglian Water	Southwold Gardner Road Pumping Station	Salt Creek	0	0h	-
Anglian Water	WOOLVERSTONE-MARINA TPS	River Orwell	0	0h	-
Anglian Water	Southwold Station Road Pumping Station	Buss Creek	0	0h	-
Anglian Water	Woodbridge Deben Road CSO	River Deben Tidal	0	0h	-
Anglian Water	Mistley, School Lane CSO	River Stour	0	0h	-
Anglian Water	KIRTON-DRUNKARDS L STW	Kirton Stream	0	0h	-
Anglian Water	REYDON-THREE MARSH LN TPS	Buss Creek	0	0h	-
Anglian Water	SHOTLEY-OVERHALL FM STW	River Orwell T	0	0h	-
Anglian Water	MARTLESHAM M BRIDGE SP	River Fynn	0	0h	-
Anglian Water	WOODBRIDGE-STATION RD CSO	River Deben	0	0h	-
Anglian Water	Southwold Gardner Road Pumping Station	Salt Creek	0	0h	-
Anglian Water	SOUTHWOLD-COMMON THE STW	Tidal River Blyth	0	0h	-
Anglian Water	Woodbridge Water Recycling Centre	Martlesham Creek	0	0h	-
Anglian Water	Woodbridge Quayside Transfer Pumping Station	River Deben	0	0h	-
Anglian Water	Woodbridge Water Recycling Centre	Martlesham Creek	0	0h	-
Anglian Water	KIRTON-DRUNKARDS L STW	Kirton Stream	0	0h	-
Anglian Water	Southwold Marlborough Road Combined Sewer Overflow	Buss Creek	0	0h	-
Anglian Water	HARWICH AND DOVERCOURT STW	Tidal River Stour	0	0h	-
Anglian Water	HARWICH AND DOVERCOURT STW	Tidal River Stour	0	0h	-
Anglian Water	Mistley, School Lane CSO	River Stour	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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