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Sheffield Hallam - Live Sewage

Polluted by sewage 1,174 hours in 2026 , monitoring offline 15,461 hours so far..

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

Which Year?

Select Another Constituency

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✔ means we have live data (𝑥 if not)

View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in Sheffield Hallam so far for 2026. It is an estimate, based on very poor quality live data from the Water Companies. The water companies report their sewage to the Environment Agency every year in April. You can see the last reported year in the other page

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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Daily Data

Jan - 473 hours , 0 potential
Feb - 619 hours , 2,016 offline
Mar - 61 hours , 2,232 offline
Apr - 0 hours , 2,160 offline
May - 20 hours , 2,232 offline
Jun - 0 hours , 2,160 offline
Jul - 0 hours , 2,232 offline
Aug - 0 hours , 708 offline
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Yorkshire Water RIVELIN VALLEY 3/CSO River Rivelin 40 320h 32m -
Yorkshire Water MILLHOUSES PARK/CSO/RETENTION/NO 1 COMPARTMENT River Sheaf 31 318h 25m 0 h
Yorkshire Water LANGSETT ROAD/CSO River Don 19 121h 32m -
Yorkshire Water MILLHOUSES PARK/CSO/RETENTION/NO 2 COMPARTMENT River Sheaf 14 120h 19m -
Yorkshire Water HANGINGWATER ROAD/CSO Porter Brook 24 101h 51m -
Yorkshire Water GLEN BRIDGE/CSO River Rivelin 15 59h 50m -
Yorkshire Water BROOKHOUSE HILL/CSO Porter Brook 6 33h 1m -
Yorkshire Water STANNINGTON ROAD/NO 2 CSO Not Matched In Ea Consents Database 16 29h 46m -
Yorkshire Water WHITELEY WOODS/CSO Porter Brook 10 27h 39m -
Yorkshire Water SLAYLEIGH LANE/CSO Porter Brook 12 24h 26m -
Yorkshire Water ROCHESTER ROAD/CSO Black Brook 2 12h 23m -
Yorkshire Water ENDCLIFFE PARK/CSO Porter Brook 3 3h 56m -
Yorkshire Water STUMPERLOWE CRES ROAD/CSO Porter Brook 2 0h 28m -
Yorkshire Water RIVERDALE ROAD/NO 2 CSO Oak Brook 1 0h 19m -
Yorkshire Water BELGRAVE ROAD WEST/CSO Porter Brook 0 0h 5,324 h
Yorkshire Water SNAITHING LANE/CSO Porter Brook 0 0h -
Yorkshire Water Unknown Unknown 0 0h 5,324 h
Yorkshire Water SNAITHING PARK ROAD/CSO Porter Brook 0 0h 4,812 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.