Polluted by sewage 3,326 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 Salford, 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 | SALFORD WwTW | Manchester Ship Canal | 72 | 1,417 h 23m | 59.04 |
| United Utilities | Langley Road North CSO | River Irwell | 19 | 389 h 23m | 16.21 |
| United Utilities | Clifton PS | River Irwell | 52 | 219 h 6m | 9.12 |
| United Utilities | SALFORD WwTW | Manchester Ship Canal | 53 | 121 h 5m | 5.04 |
| United Utilities | Agecroft Power Station | River Irwell | 56 | 104 h 44m | 4.33 |
| United Utilities | Welwyn Drive CSO | Folly Brook | 61 | 103 h 36m | 4.29 |
| United Utilities | Radford Street CSO | River Irwell Via Sws | 44 | 90 h 52m | 3.75 |
| United Utilities | Clifton PS | River Irwell | 16 | 78 h 57m | 3.25 |
| United Utilities | Rake Lane CSO | Slack Brook | 13 | 54 h 19m | 2.25 |
| United Utilities | SALFORD WwTW | Manchester Ship Canal | 8 | 49 h 48m | 2.04 |
| United Utilities | Robin Hood (Clifton) PS | River Irwell Via Sws | 5 | 45 h | 1.88 |
| United Utilities | Near City Walk | Slack Brook | 27 | 40 h 57m | 1.67 |
| United Utilities | The Queensway CSO | Slack Brook Via Suface Water S | 15 | 40 h 34m | 1.67 |
| United Utilities | Mere Drive/Rake Lane CSO | Slack Brook | 15 | 40 h 32m | 1.67 |
| United Utilities | BUFFALO COURT DETENTION TANK (37066) | Manchester Ship Canal | 7 | 35 h 39m | 1.46 |
| United Utilities | Clowes Street/Daniel Adamson Road CSO | Manchester Ship Canal | 32 | 35 h 28m | 1.46 |
| United Utilities | Langley Road CSO | River Irwell | 28 | 34 h 38m | 1.42 |
| United Utilities | Sherborne Street CSO | River Irwell | 17 | 33 h 34m | 1.38 |
| United Utilities | Welwyn Drive CSO | Folly Brook | 12 | 31 h 38m | 1.29 |
| United Utilities | Laundry Street/Duchy Road Combined Sewer Overflow | River Irwell Via Sws | 24 | 31 h 12m | 1.29 |
| United Utilities | Cottenham Lane CSO | River Irwell | 9 | 28 h 42m | 1.17 |
| United Utilities | Great Clowes Street/Sussex Street CSO | River Irwell | 22 | 25 h 46m | 1.04 |
| United Utilities | Frederick Road CSO | River Irwell | 9 | 24 h 38m | 1 |
| United Utilities | Littleton Road CSO | River Irwell | 19 | 24 h 22m | 1 |
| United Utilities | Near City Walk | Slack Brook | 5 | 22 h 11m | 0.92 |
| United Utilities | Agecroft Power Station | River Irwell | 12 | 22 h 2m | 0.92 |
| United Utilities | Rear of 256 Dales Brow CSO | Deans Brook Folly Bk | 20 | 21 h 30m | 0.88 |
| United Utilities | SALFORD WwTW | Manchester Ship Canal | 10 | 20 h 50m | 0.83 |
| United Utilities | Ashworth Street CSO | River Irwell Via Sws | 15 | 18 h | 0.75 |
| United Utilities | Rake Lane CSO | Slack Brook | 2 | 16 h 4m | 0.67 |
| United Utilities | Clifton House Road (37010) (SAL0145) | River Irwell Via S.W. | 4 | 15 h 38m | 0.62 |
| United Utilities | BUFFALO COURT DETENTION TANK (37066) | Manchester Ship Canal | 1 | 13 h 4m | 0.54 |
| United Utilities | Bury New Road/Lockett Street CSO | River Irwell Via Sws | 4 | 9 h 2m | 0.38 |
| United Utilities | Lamplight Way Pumping Station | River Irwell | 1 | 8 h 52m | 0.33 |
| United Utilities | Clowes Street/Daniel Adamson Road CSO | Manchester Ship Canal | 4 | 8 h 50m | 0.33 |
| United Utilities | The Queensway CSO | Slack Brook Via Suface Water S | 1 | 8 h 19m | 0.33 |
| United Utilities | Great Clowes Street/Sussex Street CSO | River Irwell | 7 | 8 h 7m | 0.33 |
| United Utilities | Hankinson Way CSO | Manchester Ship Canal Via Sws | 5 | 5 h 10m | 0.21 |
| United Utilities | Rear of 47 Vendale Avenue | Deans Brook Via Sws | 15 | 4 h 54m | 0.17 |
| United Utilities | Littleton Road CSO | River Irwell | 2 | 4 h 52m | 0.17 |
| United Utilities | In fields at rear of 36 East Drive CSO | Folly Brook Via A Sws | 5 | 4 h 15m | 0.17 |
| United Utilities | Mere Drive/Rake Lane CSO | Slack Brook | 1 | 3 h 52m | 0.12 |
| United Utilities | Park Street/Swinton Hall Road | Folly Brook Via Sws | 7 | 3 h 40m | 0.12 |
| United Utilities | Dorchester Rd, adj 182 Manchester Rd | Folly Brook Via Sws | 2 | 0 h 44m | 0 |
| United Utilities | Langley Road North CSO | River Irwell | 9 | 0 h 42m | 0 |
| United Utilities | Laundry Street/Duchy Road Combined Sewer Overflow | River Irwell Via Sws | 1 | 0 h 38m | 0 |
| United Utilities | CROMWELL ROAD / LICHFIELD STREET CSO | River Irwell | 3 | 0 h 36m | 0 |
| United Utilities | Radford Street CSO | River Irwell Via Sws | 3 | 0 h 36m | 0 |
| United Utilities | Sherborne Street CSO | River Irwell | 1 | 0 h 24m | 0 |
| United Utilities | Langley Road CSO | River Irwell | 1 | 0 h 24m | 0 |
| United Utilities | Ashworth Street CSO | River Irwell Via Sws | 1 | 0 h 20m | 0 |
| United Utilities | Rear of 256 Dales Brow CSO | Deans Brook Folly Bk | 2 | 0 h 16m | 0 |
| United Utilities | FAIRY LANE CSO | River Irwell | 3 | 0 h 12m | 0 |
| United Utilities | Rear of 47 Vendale Avenue | Deans Brook Via Sws | 1 | 0 h 2m | 0 |
| United Utilities | Bury New Road/Lockett Street CSO | River Irwell Via Sws | 0 | 0 h | 0 |
| United Utilities | FAIRY LANE CSO | River Irwell | 0 | 0 h | 0 |
| United Utilities | Robin Hood (Clifton) PS | River Irwell Via Sws | 0 | 0 h | 0 |
| United Utilities | Hankinson Way CSO | Manchester Ship Canal Via Sws | 0 | 0 h | 0 |
| United Utilities | Lamplight Way Pumping Station | River Irwell | 0 | 0 h | 0 |
| United Utilities | Park Street/Swinton Hall Road | Folly Brook Via Sws | 0 | 0 h | 0 |
| United Utilities | CROMWELL ROAD / LICHFIELD STREET CSO | River Irwell | 0 | 0 h | 0 |
| United Utilities | Clifton House Road (37010) (SAL0145) | River Irwell Via S.W. | 0 | 0 h | 0 |
| United Utilities | Frederick Road CSO | River Irwell | 0 | 0 h | 0 |
| United Utilities | In fields at rear of 36 East Drive CSO | Folly Brook Via A Sws | 0 | 0 h | 0 |
| United Utilities | Dorchester Rd, adj 182 Manchester Rd | Folly Brook Via Sws | 0 | 0 h | 0 |
| United Utilities | Cottenham Lane CSO | River Irwell | 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.