Warden Grove SSO
Storm overflow operated by Northumbrian Water. The source names Rainton Burn as the receiving water.
- 40
- Spills in 2025
- 72.1
- Recorded hours
- 95.4%
- Monitor operation
- 2
- Years listed
The reported spill count was 13 lower than in 2024. This compares event counts, not discharge volume.
Checking the latest monitor report…
How it compares in 2025
Warden Grove SSO recorded 40 spills in 2025. That is more than 82% of the 14,239 overflows in England with a reported figure, and ranks 2,394th nationally. Among Northumbrian Water overflows it ranks 196th of 1,559; the median Northumbrian Water overflow recorded 11 spills. On the Lumley Park Burn from Source to Herrington Burn waterbody it ranks 3rd of 23.
| Group | Rank by spills | Median spills | Median hours |
|---|---|---|---|
| This outlet | – | 40 | 72.1 |
| England | 2,394th of 14,239 | 11 | 22.3 |
| Northumbrian Water | 196th of 1,559 | 11 | 15.6 |
| Lumley Park Burn from Source to Herrington Burn | 3rd of 23 | 14 | 13.8 |
Rank 1 has the most spills. Equal counts share a rank. Only overflows with a reported count are ranked. Counts do not measure volume, so a higher rank does not mean more sewage.
Annual spill history
| Year | Spills | Duration | Monitor operation | Source |
|---|---|---|---|---|
| 2025 | 40 | 72.1 hours | 95.4% | Official data |
| 2024 | 53 | 110.5 hours | 95.5% | Official data |
A missing figure means the source did not provide a usable value. A zero is shown as zero. Monitor operation below 90% can make comparison less reliable.
Outlet details
- Water company
- Northumbrian Water
- Outlet type
- Storm overflow on the sewer network
- Permit
- 245/C/0293
- Activity reference
- A1
- Grid reference
- NZ3378448740
- Waterbody ID
- GB103024077580Official waterbody record ↗
- Location source
- Official annual grid reference
- Location precision
- About 1 metres
- Location note
- Unknown
About the name and type
The annual return lists this asset as “SO on sewer network”: storm overflow on the sewer network. The return places this overflow on the sewer network.
The waterbody link opens the Environment Agency record for the exact ID in the return. It is a source lookup; we do not import its classification.
Where it is
The recorded position is about 0.8 km south of the Houghton-le-Spring reference point in the ONS built-up areas data.
Area and water pages
- Birtley area →
- Washington area →
- Pelton and Ouston area →
- Whitehill (County Durham) area →
- Sacriston area →
- Nettlesworth and Kimblesworth area →
- Chester-le-Street area →
- Durham area →
- Great Lumley area →
- Fence Houses area →
- Houghton-le-Spring area →
- High Pittington area →
- Penshaw area →
- East Rainton area →
- Sherburn (County Durham) area →
- West Rainton area →
- Bournmoor area →
- Shiney Row and Penshaw area →
- Hetton le Hill area →
- Sherburn Hill area →
- Hetton-le-Hole area →
- High Shincliffe area →
- Easington Lane area →
- Shadforth area →
- Lumley Park Burn from Source to Herrington Burn waterbody →
Check the official record
Public access to this outlet is unknown. Do not enter restricted land or use this page as a route guide.
Open official source ↗Other outlet records nearby
- Gillas Lane West CSO (Su30)Current status unknown
Northumbrian Water · Rainton Burn
- A690 Slip Road CSO, Su27Current status unknown
Northumbrian Water · Rainton Burn
- Stanhope Close CSO Su 26Current status unknown
Northumbrian Water · Rainton Burn
- Hetton Road CSO Su33Current status unknown
Northumbrian Water · Rough Dene Burn
Questions about Warden Grove SSO
- Who operates Warden Grove SSO?
- Northumbrian Water is the operator named in the annual record. The permit reference is 245/C/0293.
- Where does Warden Grove SSO discharge?
- The source names Rainton Burn as the receiving water. This does not show how far a discharge travelled.
- How many times did Warden Grove SSO spill in 2025?
- The 2025 return records 40 counted spill events and 72.1 hours of recorded discharge. Spills are counted with the 12/24-hour method, so this is not a count of every start signal.
- Can I trust the 2025 figures for this outlet?
- The monitor worked for 95.4% of the reporting period, so the annual figures cover most of the year. They still do not measure discharge volume.
- Is Warden Grove SSO discharging right now?
- This record is linked to a company live feed. The panel above shows the latest report we hold, with its date. That report can be old, and the monitor can be offline, so check the date before relying on it. A report that no discharge is taking place is not a water-quality result.
- How accurate is the map marker?
- The marker comes from the grid reference in the official annual return, which is accurate to about 1 metres. It shows the recorded outlet position, not the extent of any discharge.
- What kind of outlet is Warden Grove SSO?
- The annual return lists the asset type as “SO on sewer network”, which means storm overflow on the sewer network. The return places this overflow on the sewer network.
- How does Warden Grove SSO compare with other overflows?
- Warden Grove SSO recorded 40 spills in 2025. That is more than 82% of the 14,239 overflows in England with a reported figure, and ranks 2,394th nationally. Among Northumbrian Water overflows it ranks 196th of 1,559; the median Northumbrian Water overflow recorded 11 spills. On the Lumley Park Burn from Source to Herrington Burn waterbody it ranks 3rd of 23. Ranks compare counted spill events only. They do not compare volume or harm.
- Does zero spills mean the water was safe?
- No. A zero means the annual return recorded zero counted spill events for this outlet and year. It is not a water-quality test, and pollution can come from other sources.