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Rawmarsh and Conisbrough - 2025 Sewage

Polluted by sewage 4,654 hours in 2025 , monitoring offline 12,360 hours , potential overflows 714 hours

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

Which Year?

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View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in Rawmarsh and Conisbrough 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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Daily Data

Jan - 1,198 hours , 108 potential
Feb - 99 hours , 20 potential
Mar - 7 hours , 1,779 offline
Apr - 13 hours , 2,238 offline
May - 12 hours , 96 potential
Jun - 12 hours , 1,445 offline
Jul - 75 hours , 1,132 offline
Aug - 11 hours , 39 potential
Sept - 382 hours , 428 potential
Oct - 102 hours , 21 potential
Nov - 1,331 hours
Dec - 1,407 hours , 162 offline
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Totals so far

Company Site Name Receiving Waterway Overflow Days Total Duration (hours) Offline/Potential Pollution
Yorkshire Water WENTWORTH/STW Unnamed Of Harley Dyke 86 1,408h 49m -
Yorkshire Water BARROWFIELD ROAD/CSO Harley Dike 38 693h 56m -
Yorkshire Water MEXBORO SWINTON/STW River Don 57 338h 37m 1,392 h
Yorkshire Water WATH ON DEARNE/STW Brook Dike/River Dearne 21 304h 19m -
Yorkshire Water ALDWARKE/STW River Don 35 248h 14m 957 h
Yorkshire Water KILNERS BRIDGE DENABY/CSO Tbc When Permit Issued 23 194h 42m -
Yorkshire Water HOOTON ROBERTS/STW Hooton Brook 24 125h 21m -
Yorkshire Water DENABY/NO 2 STW River Don 28 105h 10m -
Yorkshire Water LIME GROVE/CSO Clvrt Kilnhurst Cut 33 103h 14m -
Yorkshire Water RAVENFIELD/STW Hooton Brook 33 99h 10m 105 h
Severn Trent Water WARMSWORTH STW 6DWF (CSO) Warmsworth Beck 30 96h 46m -
Yorkshire Water SWINTON CHURCH STREET/CSO River \Ndon 9 93h 33m 323 h
Yorkshire Water FERRYBOAT LANE/SPS River Don 13 91h 20m -
Yorkshire Water RAWMARSH/NO 2 CSO Roundwood Brook 12 85h 23m -
Yorkshire Water BURCROFT HILL/CSO Kearsley Brook 36 80h 26m -
Yorkshire Water CARLISLE STREET/CSO Sheff 17 75h 19m -
Severn Trent Water RAVENFIELD COMMON - BRAITHWELL RD (SSO) Hellaby Brook 17 70h 19m 77 h
Yorkshire Water WATH ON DEARNE/CSO Brook Dike 18 68h 53m 6,096 h
Severn Trent Water WARMSWORTH STW (SSTO & EO) Warmsworth Beck 9 55h 47m -
Yorkshire Water THE TAVERN PUB HOUSE/CSO Unknown 6 45h 20m -
Yorkshire Water HARLEY/STW Harley Dike 19 41h 7m -
Severn Trent Water RAVENFIELD COMMON - BRAITHWELL RD (SSO) Hellaby Brook 8 36h 12m 42 h
Yorkshire Water STADIUM WAY/CSO Parish Dyke 7 34h 48m -
Severn Trent Water WARMSWORTH STW 6DWF (CSO) Warmsworth Beck 12 32h 29m -
Yorkshire Water WATH BROOK DIKE/CSO Brook Dyke 13 31h 45m -
Yorkshire Water PONTEFRACT RD BRAMPTN/CSO Knoll Beck 13 23h 42m 21 h
Yorkshire Water GREYS BRIDGE/CSO River Don 4 19h 58m -
Severn Trent Water WARMSWORTH - COMMON LANE (CSO) Warmsworth Beck 6 11h 32m 271 h
Yorkshire Water WATH DONCASTER ROAD/CSO Brook Dike 11 9h 52m -
Yorkshire Water WATH MOOR ROAD/CSO Brook Dike 12 9h 2m -
Yorkshire Water SCHOOL WALK/CSO Unknown 1 8h 55m 172 h
Yorkshire Water WATH CEMETERY ROAD/CSO Brook Dike 2 3h 28m 1,423 h
Yorkshire Water MOORBRIDGE ROAD/CSO Knoll Beck 5 2h 53m -
Severn Trent Water WARMSWORTH STW (SSTO & EO) Warmsworth Beck 2 2h 48m -
Yorkshire Water KEARSLEY LANE/CSO Kearsley Brook 2 0h 42m -
Yorkshire Water MELTON GREEN/CSO Brook Dike 2 0h 42m -
Yorkshire Water HOOTON ROAD/CSO River Don 1 0h 14m -
Yorkshire Water STUMP CROSS ROAD/CSO Brook Dike 0 0h -
Yorkshire Water NORTH CLIFF ROAD/CSO River Don 0 0h -
Yorkshire Water WATH WEST STREET/NO 2 CSO Brook Dike 0 0h -
Severn Trent Water WARMSWORTH - COMMON LANE (CSO) Warmsworth Beck 0 0h -
Yorkshire Water HAMELINE ROAD/NO 2 CSO Kearsley Brook 0 0h -
Yorkshire Water DAYLANDS AVENUE/NO 2 CSO Kearsley Brook 0 0h -
Yorkshire Water WATH CHURCH STREET/CSO Brook Dike Culverted 0 0h -
Yorkshire Water NEWHILL PARK/CSO Brook Dike 0 0h 2,190 h
Yorkshire Water TICKHILL STREET/CSO Unknown 0 0h -
Yorkshire Water RAWMARSH HILL/CSO Tbc When Permit Issued 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

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.