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Norwich South - 2025 Sewage

Polluted by sewage 3,056 hours in 2025 , monitoring offline 4,747 hours , potential overflows 151 hours

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Contains OS Data © Crown copyright & database right 2021-2024
© Top of the Poops 2021-2024

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View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in Norwich South for 2025. It is an estimate, based on very poor quality live data from the Water Companies. This may not align with the 'official' reported sewage values from the water companies, which is reported in April following then end of the year - so 2025 numbers are reported in April 2026.

What's a potential overflow? If the CSO goes 'Offline' while its Overflowing, we don't know if it stopped overflowing until we get a 'Stop' event.

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Constituencies near Norwich South

Daily Data

Jan - 98 hours
Feb - 194 hours
Mar - 8 hours
Apr - 416 hours
May - 169 hours , 150 potential
Jun - 15 hours
Jul - 35 hours , 382 offline
Aug - 11 hours , 908 offline
Sept - 466 hours , 720 offline
Oct - 11 hours , 0 potential
Nov - 1,252 hours , 1,114 offline
Dec - 376 hours , 853 offline
Daily data is experimental and data is not guaranteed to be accurate. Please inform us of any issue, we will fix.
Please note: We don't have rainfall data for Wales. If you know where to source it please let us know!
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Anglian Water Norwich School Lane/Bedford Street Combined Sewer Overflow River Wensum 34 677 h 6m 150 h
Anglian Water NORWICH - KETTS HILL River Wensum 51 545 h 47m 1 h
Anglian Water King Street Combined Sewer Overflow (Previously Known as Turning Basin CSO) River Wensum 48 537 h 48m 0 h
Anglian Water Trowse Terminal Pumping Station River Yare 31 532 h 25m -
Anglian Water Norwich Sandy Lane Combined Sewer Overflow River Yare 31 302 h 52m -
Anglian Water Norwich - Gibraltar Gardens Combined Sewer Overflow River Wensum 15 156 h 50m -
Anglian Water Norwich Cedar Road Combined Sewer Overflow River Wensum 8 95 h 57m -
Anglian Water Norwich Carrow Road Combined Sewer Overflow River Wensum 8 75 h 45m 3,164 h
Anglian Water Norwich - Gibraltar Gardens Combined Sewer Overflow River Wensum 6 35 h 57m -
Anglian Water Trowse Terminal Pumping Station River Yare 5 22 h 52m -
Anglian Water NORWICH - KETTS HILL River Wensum 9 19 h 46m -
Anglian Water King Street Combined Sewer Overflow (Previously Known as Turning Basin CSO) River Wensum 8 16 h 2m -
Anglian Water Norwich Angel Road Combined Sewer Overflow River Wensum 5 12 h 2m -
Anglian Water NORWICH-KING STREET SSO #2 River Wensum 18 9 h 20m -
Anglian Water Norwich Lower Close (Ferry Lane) Combined Sewer Overflow River Wensum 5 6 h 30m 0 h
Anglian Water NORWICH-FYE BRIDGE (N) SSO Wensum Ds Norwich 6 2 h 26m -
Anglian Water Norwich School Lane/Bedford Street Combined Sewer Overflow River Wensum 3 1 h 30m -
Anglian Water Norwich - Prince of Wales Road Combined Sewer Overflow River Wensum 3 1 h 28m -
Anglian Water NORWICH - RIVER LANE River Wensum 3 1 h 14m 0 h
Anglian Water Norwich St.Faiths Lane Combined Sewer Overflow River Wensum 3 1 h 418 h
Anglian Water NORWICH-BARRACK STREET SSO River Wensum 2 0 h 44m -
Anglian Water NORWICH-KING STREET SSO #2 River Wensum 1 0 h 15m -
Anglian Water NORWICH-NEW MILLS SSO River Wensum 1 0 h 15m -
Anglian Water NORWICH - RECORDER ROAD River Wensum 1 0 h 15m -
Anglian Water NORWICH-FYE BRIDGE (N) SSO Wensum Ds Norwich 1 0 h 14m -
Anglian Water NORWICH - ROSARY ROAD River Wensum 1 0 h 8m -
Anglian Water NORWICH-ELM HILL SSO River Wensum 0 0 h -
Anglian Water Norwich Cedar Road Combined Sewer Overflow River Wensum 0 0 h -
Anglian Water NORWICH-NEW MILLS SSO River Wensum 0 0 h -
Anglian Water Norwich Sandy Lane Combined Sewer Overflow River Yare 0 0 h -
Anglian Water Norwich Angel Road Combined Sewer Overflow River Wensum 0 0 h -
Anglian Water Norwich St.Faiths Lane Combined Sewer Overflow River Wensum 0 0 h -
Anglian Water NORWICH, BRACONDALE CSO River Yare 0 0 h -
Anglian Water NORWICH - ROSARY ROAD River Wensum 0 0 h -
Anglian Water Norwich Lower Close (Ferry Lane) Combined Sewer Overflow River Wensum 0 0 h -
Anglian Water WENSUM VALLEY-LUSHER RISE SSO Wensum Ds Norwich 0 0 h -
Anglian Water Norwich Carrow Road Combined Sewer Overflow River Wensum 0 0 h -
Anglian Water NORWICH - CHALK HILL RD River Wensum 0 0 h -
Anglian Water NORWICH - OAK LANE River Wensum 0 0 h 1,162 h
Anglian Water NORWICH-ELM HILL SSO River Wensum 0 0 h -
Anglian Water NORWICH - RIVER LANE River Wensum 0 0 h -
Anglian Water Norwich - Prince of Wales Road Combined Sewer Overflow River Wensum 0 0 h -
Anglian Water NORWICH - RECORDER ROAD River Wensum 0 0 h -
Anglian Water NORWICH-BARRACK STREET SSO River Wensum 0 0 h -
Anglian Water NORWICH, BRACONDALE CSO River Yare 0 0 h -
Anglian Water NORWICH - CHALK HILL RD River Wensum 0 0 h -

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.

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Analysing sewage pollution by the Water Industry

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© Openstreetmap contributors, Contains OS data © Crown copyright and database right 2021-2025,
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