Polluted by sewage 1,854 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 Houghton and Sunderland South, 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) |
|---|---|---|---|---|---|
| Northumbrian Water | Unknown | Unknown | 22 | 398 h 43m | 16.58 |
| Northumbrian Water | SEDGELETCH SEWAGE TREATMENT WORKS | Herrington Burn/Moors Burn | 30 | 377 h 18m | 15.71 |
| Northumbrian Water | Unknown | Unknown | 16 | 142 h 24m | 5.92 |
| Northumbrian Water | SHINEY ROW FOOTBRIDGE CSO | Herrington Burn | 22 | 114 h 40m | 4.75 |
| Northumbrian Water | Unknown | Unknown | 21 | 80 h 28m | 3.33 |
| Northumbrian Water | Unknown | Unknown | 11 | 59 h 53m | 2.46 |
| Northumbrian Water | Unknown | Unknown | 10 | 50 h 41m | 2.08 |
| Northumbrian Water | Unknown | Unknown | 18 | 47 h 51m | 1.96 |
| Northumbrian Water | Unknown | Unknown | 22 | 41 h 27m | 1.71 |
| Northumbrian Water | HETTON ROAD CSO SU33 | Rough Dene Burn | 17 | 39 h 30m | 1.62 |
| Northumbrian Water | Unknown | Unknown | 33 | 38 h 58m | 1.58 |
| Northumbrian Water | GOLDEN LION SPS | River Wear | 8 | 36 h 42m | 1.5 |
| Northumbrian Water | Unknown | Unknown | 14 | 36 h 15m | 1.5 |
| Northumbrian Water | Unknown | Unknown | 12 | 35 h 1m | 1.46 |
| Northumbrian Water | Unknown | Unknown | 22 | 33 h 34m | 1.38 |
| Northumbrian Water | Unknown | Unknown | 6 | 30 h 28m | 1.25 |
| Northumbrian Water | Unknown | Unknown | 7 | 29 h 32m | 1.21 |
| Northumbrian Water | GILLAS LANE WEST CSO (SU30) | Rainton Burn | 15 | 26 h 42m | 1.08 |
| Northumbrian Water | POTTERY LANE PS | Wear Estuary | 5 | 25 h 23m | 1.04 |
| Northumbrian Water | WARDEN GROVE SSO | Rainton Burn | 18 | 24 h 52m | 1 |
| Northumbrian Water | AVENUE VIVIAN CSO SU013 | Moors Burn | 15 | 23 h 14m | 0.96 |
| Northumbrian Water | Unknown | Unknown | 11 | 19 h 12m | 0.79 |
| Northumbrian Water | 66 ROSS LEA CSO | Herrington Burn | 8 | 14 h 30m | 0.58 |
| Northumbrian Water | STANHOPE CLOSE CSO SU 26 | Rainton Burn | 10 | 13 h 12m | 0.54 |
| Northumbrian Water | Unknown | Unknown | 10 | 12 h 56m | 0.5 |
| Northumbrian Water | Unknown | Unknown | 6 | 10 h 43m | 0.42 |
| Northumbrian Water | Unknown | Unknown | 1 | 10 h 15m | 0.42 |
| Northumbrian Water | Unknown | Unknown | 5 | 8 h 56m | 0.33 |
| Northumbrian Water | SEDGELETCH BRIDGE CSO | Moors Burn | 5 | 7 h 40m | 0.29 |
| Northumbrian Water | WESTBOURNE DRIVE CSO | Herrington Burn | 4 | 6 h 58m | 0.25 |
| Northumbrian Water | Unknown | Unknown | 6 | 6 h 53m | 0.25 |
| Northumbrian Water | BRINKBURN CRESCENT CSO (SU28) | Moors Burn, Lumley Park | 6 | 6 h 40m | 0.25 |
| Northumbrian Water | CHURCH STREET NO26 CSO | Moors Burn | 7 | 6 h 26m | 0.25 |
| Northumbrian Water | Unknown | Unknown | 3 | 6 h 13m | 0.25 |
| Northumbrian Water | ELEMORE VALE SPS | Hetton Burn | 2 | 5 h 22m | 0.21 |
| Northumbrian Water | HETTON-LE-HOLE SSO NO. 3 | Hetton Burn | 3 | 4 h 44m | 0.17 |
| Northumbrian Water | Unknown | Unknown | 2 | 4 h 2m | 0.17 |
| Northumbrian Water | Unknown | Unknown | 5 | 3 h 24m | 0.12 |
| Northumbrian Water | Unknown | Unknown | 5 | 2 h 14m | 0.08 |
| Northumbrian Water | SEAHAM ROAD CSO SU35 | Houghton Burn | 4 | 2 h 8m | 0.08 |
| Northumbrian Water | Unknown | Unknown | 2 | 2 h 4m | 0.08 |
| Northumbrian Water | BOURN LEA CSO CH087 | Herrington Burn | 1 | 1 h 28m | 0.04 |
| Northumbrian Water | Unknown | Unknown | 3 | 1 h 4m | 0.04 |
| Northumbrian Water | HETTON PARK BOWLING GREEN CSO | Hetton Burn | 1 | 0 h 52m | 0 |
| Northumbrian Water | Unknown | Unknown | 2 | 0 h 50m | 0 |
| Northumbrian Water | Unknown | Unknown | 3 | 0 h 38m | 0 |
| Northumbrian Water | HETTON-LE-HOLE DAY CENTRE COMBINED SEWER OVERFLOW (SU37) | Hetton Burn | 1 | 0 h 38m | 0 |
| Northumbrian Water | Unknown | Unknown | 1 | 0 h 32m | 0 |
| Northumbrian Water | Unknown | Unknown | 1 | 0 h 15m | 0 |
| Northumbrian Water | Unknown | Unknown | 3 | 0 h 12m | 0 |
| Northumbrian Water | Unknown | Unknown | 2 | 0 h 7m | 0 |
| Northumbrian Water | WEST PARK ESTATE CSO | Herrington Burn Via A Culvert | 2 | 0 h 4m | 0 |
| Northumbrian Water | BURNSIDE AVENUE CSO | Moors Burn | 0 | 0 h | 0 |
| Northumbrian Water | BRINKBURN SSO | Red Burn | 0 | 0 h | 0 |
| Northumbrian Water | A690 SLIP ROAD CSO, SU27 | Rainton Burn | 0 | 0 h | 0 |
| Northumbrian Water | GILLAS LANE EAST CSO (SU32) | Rough Dene Burn | 0 | 0 h | 0 |
| Northumbrian Water | ST LUKES ROAD CSO | River Wear | 0 | 0 h | 0 |
| Northumbrian Water | REAR ST MICHAELS CSO | Red Burn | 0 | 0 h | 0 |
| Northumbrian Water | OTTERBURN CRESCENT CSO | Moors Burn | 0 | 0 h | 0 |
| Northumbrian Water | DAIRY LANE CSO SU024 | Rainton Burn | 0 | 0 h | 0 |
| Northumbrian Water | GOLF COURSE ROAD CSO | Herrington Burn | 0 | 0 h | 0 |
| Northumbrian Water | OSMAN TERRACE CSO | Moors Burn | 0 | 0 h | 0 |
| Northumbrian Water | SEDGELETCH STW | Herrington Burn/Moors Burn | 0 | 0 h | 0 |
| Northumbrian Water | HOUGHTON LE SPRING CSO | River Wear | 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.