Area of Outstanding Natural Beauty

Wye Valley - Live Sewage

Polluted by sewage 6,029 hours in 2026 so far..

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Area of Outstanding Natural Beauty

Totals for Wye Valley in 2026

Sewage6,029 hours

Monitoring offline0 hours

Potential pollution0 hours

Storm overflows26

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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 - 1,872 hours

Feb - 3,131 hours

Mar - 257 hours

Apr - 78 hours

May - 55 hours

Jun - 0 hours

Jul - 0 hours

Aug - 181 hours

Sept - 24 hours

Oct - 264 hours

Nov - 164 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 Wye Valley

Company	Site Name	Receiving Waterway	Overflow Days	Total Duration (hours)	Offline/Potential Pollution
Dwr Cymru Welsh Water	St Briavels WwTW Storm Overflow	Wye Estuary	82	971h 51m	-
Dwr Cymru Welsh Water	Ruardean WwTW Storm Overflow	Unnamed Tribuatary of Lodgegrove Brook	51	893h 26m	-
Dwr Cymru Welsh Water	Newland WwTW Settled Storm Overflow	River Wye	53	744h 59m	-
Dwr Cymru Welsh Water	Wyesham Monmouth WwTW Storm Overflow	River Wye	49	662h 29m	-
Dwr Cymru Welsh Water	Ross Lower Cleeve Storm Overflow	River Wye	56	633h 11m	-
Dwr Cymru Welsh Water	Tintern Main Road Storm Overflow	River Wye	43	567h 4m	-
Dwr Cymru Welsh Water	Lydbrook WwTW Storm Overflow	River Wye	30	375h	-
Dwr Cymru Welsh Water	Joyford The Sinks Storm Overflow	Unnamed Brook	20	316h 43m	-
Dwr Cymru Welsh Water	Wye Street Storm Overflow	River Wye	43	252h 7m	-
Dwr Cymru Welsh Water	Welsh Street Storm Overflow	River Wye	52	236h 15m	-
Dwr Cymru Welsh Water	Granville Street Riverbank Storm Overflow	River Wye	29	88h 29m	-
Dwr Cymru Welsh Water	Homs Road Storm Overflow	River Wye	35	80h 45m	-
Dwr Cymru Welsh Water	Lydbrook Storm Overflow	Tributary of the River Wye	21	51h 54m	-
Dwr Cymru Welsh Water	Wilton Storm Overflow	River Wye	8	48h 41m	-
Dwr Cymru Welsh Water	Newland WwTW No.2 Storm Overflow	Valley Brook	21	44h	-
Dwr Cymru Welsh Water	Brampton Street Storm Overflow	Rudhall Brook	15	31h 25m	-
Dwr Cymru Welsh Water	Lydbrook Overflow	River Wye	8	21h 25m	-
Dwr Cymru Welsh Water	Tintern WwTW Overflow	River Wye	10	2h 50m	-
Dwr Cymru Welsh Water	Newland WwTW No1 Storm Overflow	Valley Brook	5	2h 29m	-
Dwr Cymru Welsh Water	Lower Lydbrook Storm Overflow	River Wye	5	2h	-
Dwr Cymru Welsh Water	Cawdor Arch Road Storm Overflow	Rudhall Brook	3	1h 54m	-
Dwr Cymru Welsh Water	Unknown	Unknown	0	0h	-
Dwr Cymru Welsh Water	South Hillcrest Road Monmouth Overflow	River Wye	0	0h	-
Dwr Cymru Welsh Water	Fownhope WwTW Storm Overflow	River Wye	0	0h	-
Dwr Cymru Welsh Water	Smallbrook Road Storm Overflow	Small Brook	0	0h	-
Dwr Cymru Welsh Water	North Hillcrest Road Monmouth Overflow	River Wye	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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