Polluted by sewage 3,955 hours in 2025
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We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for Stalybridge and Hyde, here you can see overflows in red, the darker the red, the more the CSO overflowed that day.
Each CSO has a row, the most recent data is on the right hand side.
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Donate Now| Company | Site Name | Receiving Waterway | Overflow Days | Total Duration (hours) | Total Duration (days) |
|---|---|---|---|---|---|
| United Utilities | MOSSLEY WwTW | River Tame | 74 | 1,004 h 51m | 41.83 |
| United Utilities | MOSSLEY WwTW | River Tame | 19 | 292 h 41m | 12.17 |
| United Utilities | MOSSLEY WwTW | River Tame | 24 | 257 h 24m | 10.71 |
| United Utilities | HYDE WwTW | River Tame | 50 | 247 h 11m | 10.29 |
| United Utilities | Spring Tavern CSO | River Etherow | 59 | 195 h 58m | 8.12 |
| United Utilities | Corporation Street CSO | River Tame | 56 | 171 h 35m | 7.12 |
| United Utilities | Tame Street/Park Road CSO | River Tame | 25 | 168 h 16m | 7 |
| United Utilities | Grove Road CSO | River Tame | 40 | 161 h 49m | 6.71 |
| United Utilities | MOSSLEY WwTW | River Tame | 12 | 135 h 50m | 5.62 |
| United Utilities | Woolley Lane Combined Sewer Overflow (44024) (TAM0142) | River Etherow | 36 | 103 h 58m | 4.29 |
| United Utilities | Tame Street/Park Road CSO | River Tame | 14 | 98 h 20m | 4.08 |
| United Utilities | Raglan Street CSO | River Tame | 43 | 95 h 44m | 3.96 |
| United Utilities | HYDE WwTW | River Tame | 17 | 92 h 9m | 3.83 |
| United Utilities | HYDE WwTW | River Tame | 15 | 86 h 19m | 3.58 |
| United Utilities | Spring Tavern CSO | River Etherow | 17 | 84 h 38m | 3.5 |
| United Utilities | Grove Road CSO | River Tame | 17 | 75 h 34m | 3.12 |
| United Utilities | Mottram Road CSO (449BT) | River Tame | 36 | 72 h 43m | 3 |
| United Utilities | Corporation Street CSO | River Tame | 16 | 57 h 22m | 2.38 |
| United Utilities | Canal Bank near Transformer House CSO | Swineshaw Brook Rvr Tame | 23 | 51 h 2m | 2.12 |
| United Utilities | Stockport Road CSO | County Brook | 4 | 41 h 16m | 1.71 |
| United Utilities | Raglan Street CSO | River Tame | 12 | 37 h 57m | 1.54 |
| United Utilities | Woolley Lane Combined Sewer Overflow (44024) (TAM0142) | River Etherow | 11 | 32 h 5m | 1.33 |
| United Utilities | STAMFORD ROAD CSO | County Brook | 4 | 31 h 30m | 1.29 |
| United Utilities | Roaches Lock | River Tame | 22 | 31 h 16m | 1.29 |
| United Utilities | Commercial Brow CSO | Godley Brook | 12 | 29 h 39m | 1.21 |
| United Utilities | HYDE WwTW | River Tame | 6 | 28 h 9m | 1.17 |
| United Utilities | Cheetham Hill Road CSO | Johnson Brook | 13 | 24 h 24m | 1 |
| United Utilities | WELL ROW CSO | River Etherow | 5 | 22 h 4m | 0.92 |
| United Utilities | DARK LANE CSO | Unnamed River Tame | 3 | 17 h 46m | 0.71 |
| United Utilities | Canal Bank near Transformer House CSO | Swineshaw Brook Rvr Tame | 8 | 16 h 36m | 0.67 |
| United Utilities | Broadbottom PS | River Etherow | 4 | 15 h 14m | 0.62 |
| United Utilities | Mottram Road CSO (449BT) | River Tame | 7 | 14 h 50m | 0.58 |
| United Utilities | Off Grove Road CSO | Clvrt Sect Swineshaw Brook | 5 | 14 h 42m | 0.58 |
| United Utilities | WELL ROW CSO | River Etherow | 16 | 13 h 38m | 0.54 |
| United Utilities | FERN BANK CSO | Stocks Brook | 9 | 13 h 14m | 0.54 |
| United Utilities | COMMERCIAL BROW CSO | Wilson Brook | 8 | 12 h 50m | 0.5 |
| United Utilities | COMMERCIAL BROW CSO | Wilson Brook | 6 | 12 h 30m | 0.5 |
| United Utilities | Rassbottom Street CSO | River Tame | 2 | 11 h 32m | 0.46 |
| United Utilities | Stockport Road CSO | County Brook | 1 | 8 h 11m | 0.33 |
| United Utilities | Huddersfield Road CSO | Culvert To River Tame | 5 | 6 h 40m | 0.25 |
| United Utilities | Apethorn Lane | River Tame | 1 | 5 h 30m | 0.21 |
| United Utilities | BINNS STREET CSO | River Tame | 1 | 5 h 18m | 0.21 |
| United Utilities | Off Foxholes Road CSO | River Tame | 7 | 5 h 1m | 0.21 |
| United Utilities | Stamford Street CSO | Swineshaw Brook Via Sws | 4 | 4 h 50m | 0.17 |
| United Utilities | Cumberland Street CSO | Culvert To River Tame | 2 | 4 h 32m | 0.17 |
| United Utilities | Chain Bar Lane CSO | Hurst Clough Brook | 1 | 4 h 30m | 0.17 |
| United Utilities | Off Huddersfield Road CSO | Clvrt Sec Unnamed Rvrtame | 2 | 4 h 8m | 0.17 |
| United Utilities | Cheetham Hill Road CSO | Johnson Brook | 3 | 3 h 55m | 0.12 |
| United Utilities | Commercial Brow CSO | Godley Brook | 4 | 3 h 28m | 0.12 |
| United Utilities | Buckton Vale Road CSO | A Culverted To River Tame | 3 | 3 h 20m | 0.12 |
| United Utilities | Junction of Dukinfield Road and Throstle Bank Street combined sewer overflow (441SN) (TAM0079) | Unnamed River Tame | 2 | 3 h 14m | 0.12 |
| United Utilities | Roaches Lock | River Tame | 2 | 3 h 4m | 0.12 |
| United Utilities | Wakefield Road CSO (449LF) | River Tame | 1 | 3 h 2m | 0.12 |
| United Utilities | Knowle Street CSO | River Tame | 3 | 2 h 56m | 0.08 |
| United Utilities | Manchester Road CSO | River Tame | 6 | 2 h 22m | 0.08 |
| United Utilities | Hattersley SSO | Wilson Brook | 1 | 2 h 18m | 0.08 |
| United Utilities | DARK LANE CSO | Unnamed River Tame | 1 | 1 h 4m | 0.04 |
| United Utilities | WAGGON ROAD CSO | River Tame | 3 | 0 h 50m | 0 |
| United Utilities | Trinity Street/Dean Street CSO | River Tame | 2 | 0 h 44m | 0 |
| United Utilities | Off Foxholes Road CSO | River Tame | 1 | 0 h 40m | 0 |
| United Utilities | Clough End Road CSO | Hurst Clough Brook | 1 | 0 h 32m | 0 |
| United Utilities | Huddersfield Road CSO | Culvert To River Tame | 1 | 0 h 14m | 0 |
| United Utilities | Manchester Road CSO | River Tame | 2 | 0 h 8m | 0 |
| United Utilities | FERN BANK CSO | Stocks Brook | 1 | 0 h 8m | 0 |
| United Utilities | Stamford Street CSO | Swineshaw Brook Via Sws | 1 | 0 h 2m | 0 |
| United Utilities | Clough End Road CSO | Hurst Clough Brook | 1 | 0 h 2m | 0 |
| United Utilities | MARKET STREET / TRINITY STREET CSO | River Tame | 0 | 0 h | 0 |
| United Utilities | 212 Mottram Road CSO | Acres Brook Via Sws | 0 | 0 h | 0 |
| United Utilities | WAGGON ROAD CSO | River Tame | 0 | 0 h | 0 |
| United Utilities | Broadbottom PS | River Etherow | 0 | 0 h | 0 |
| United Utilities | STAMFORD GROVE CSO | River Tame Via A Culvert | 0 | 0 h | 0 |
| United Utilities | HANOVER STREET CSO | Culvert To River Tame | 0 | 0 h | 0 |
| United Utilities | STOCKS LANE CSO | Stocks Brook | 0 | 0 h | 0 |
| United Utilities | STAMFORD ROAD CSO | County Brook | 0 | 0 h | 0 |
| United Utilities | Trinity Street/Dean Street CSO | River Tame | 0 | 0 h | 0 |
| United Utilities | Off Grove Road CSO | Clvrt Sect Swineshaw Brook | 0 | 0 h | 0 |
| United Utilities | St. George Street/Hanover Street CSO | River Tame | 0 | 0 h | 0 |
| United Utilities | Rassbottom Street CSO | River Tame | 0 | 0 h | 0 |
| United Utilities | Melbourne Street CSO | River Tame | 0 | 0 h | 0 |
| United Utilities | Chain Bar Lane CSO | Hurst Clough Brook | 0 | 0 h | 0 |
| United Utilities | Junction of Dukinfield Road and Throstle Bank Street combined sewer overflow (441SN) (TAM0079) | Unnamed River Tame | 0 | 0 h | 0 |
| United Utilities | HANOVER STREET CSO | Culvert To River Tame | 0 | 0 h | 0 |
| United Utilities | Buckton Vale Road CSO | A Culverted To River Tame | 0 | 0 h | 0 |
| United Utilities | Illingworth Avenue CSO | Stocks Brook | 0 | 0 h | 0 |
| United Utilities | SAWYER BROW / VICTORIA STREET CSO | Wilson Brook | 0 | 0 h | 0 |
| United Utilities | SAWYER BROW / VICTORIA STREET CSO | Wilson Brook | 0 | 0 h | 0 |
| United Utilities | Melbourne Street CSO | River Tame | 0 | 0 h | 0 |
| United Utilities | Knowle Street CSO | River Tame | 0 | 0 h | 0 |
| United Utilities | MARKET STREET / TRINITY STREET CSO | River Tame | 0 | 0 h | 0 |
| United Utilities | HOUGH HILL ROAD / GRASSCROFT STREET CSO | River Tame Via Sws | 0 | 0 h | 0 |
| United Utilities | Wakefield Road CSO (449LF) | River Tame | 0 | 0 h | 0 |
| United Utilities | BINNS STREET CSO | River Tame | 0 | 0 h | 0 |
| United Utilities | St. George Street/Hanover Street CSO | River Tame | 0 | 0 h | 0 |
| United Utilities | Cumberland Street CSO | Culvert To River Tame | 0 | 0 h | 0 |
| United Utilities | Apethorn Lane | River Tame | 0 | 0 h | 0 |
| United Utilities | Off Huddersfield Road CSO | Clvrt Sec Unnamed Rvrtame | 0 | 0 h | 0 |
| United Utilities | 212 Mottram Road CSO | Acres Brook Via Sws | 0 | 0 h | 0 |
| United Utilities | STAMFORD GROVE CSO | River Tame Via A Culvert | 0 | 0 h | 0 |
| United Utilities | Hattersley SSO | Wilson Brook | 0 | 0 h | 0 |
| United Utilities | STOCKS LANE CSO | Stocks Brook | 0 | 0 h | 0 |
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.