Ilkeston - Sanders Close (CSO)
Storm overflow operated by Severn Trent Water. The source names Nut Brook as the receiving water.
- 3
- Spills in 2025
- 6.6
- Recorded hours
- 100%
- Monitor operation
- 2
- Years listed
The reported spill count was 1 higher than in 2024. This compares event counts, not discharge volume.
Checking the latest monitor report…
How it compares in 2025
Ilkeston - Sanders Close (CSO) recorded 3 spills in 2025. That is more than 26% of the 14,239 overflows in England with a reported figure, and ranks 9,843rd nationally. Among Severn Trent Water overflows it ranks 1,593rd of 2,431; the median Severn Trent Water overflow recorded 8 spills. On the Nut Brook Catchment (trib of Erewash) waterbody it ranks 9th of 11.
| Group | Rank by spills | Median spills | Median hours |
|---|---|---|---|
| This outlet | – | 3 | 6.6 |
| England | 9,843rd of 14,239 | 11 | 22.3 |
| Severn Trent Water | 1,593rd of 2,431 | 8 | 16.2 |
| Nut Brook Catchment (trib of Erewash) | 9th of 11 | 15 | 7.9 |
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 | 3 | 6.6 hours | 100% | Official data |
| 2024 | 2 | 2.7 hours | 99.4% | 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
- Severn Trent Water
- Outlet type
- Storm overflow on the sewer network
- Permit
- T/61/12297/O
- Activity reference
- A1
- Grid reference
- SK4495042650
- Waterbody ID
- GB104028052520Official 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 1.7 km south of the Shipley (Amber Valley) reference point in the ONS built-up areas data.
Area and water pages
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
- Ilkeston - Manor View (CSO)Current status unknown
Severn Trent Water · Nut Brook Canal
- West Hallam - St Wilfrids Road (CSO)Current status unknown
Severn Trent Water · Tributary of Stanley Brook
- Ilkeston - Nelson Street (CSO)Current status unknown
Severn Trent Water · River Erewash
- Ilkeston - Rutland Street (CSO)Current status unknown
Severn Trent Water · River Erewash
Questions about Ilkeston - Sanders Close (CSO)
- Who operates Ilkeston - Sanders Close (CSO)?
- Severn Trent Water is the operator named in the annual record. The permit reference is T/61/12297/O.
- Where does Ilkeston - Sanders Close (CSO) discharge?
- The source names Nut Brook as the receiving water. This does not show how far a discharge travelled.
- How many times did Ilkeston - Sanders Close (CSO) spill in 2025?
- The 2025 return records 3 counted spill events and 6.6 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 100% of the reporting period, so the annual figures cover most of the year. They still do not measure discharge volume.
- Is Ilkeston - Sanders Close (CSO) 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 Ilkeston - Sanders Close (CSO)?
- 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 Ilkeston - Sanders Close (CSO) compare with other overflows?
- Ilkeston - Sanders Close (CSO) recorded 3 spills in 2025. That is more than 26% of the 14,239 overflows in England with a reported figure, and ranks 9,843rd nationally. Among Severn Trent Water overflows it ranks 1,593rd of 2,431; the median Severn Trent Water overflow recorded 8 spills. On the Nut Brook Catchment (trib of Erewash) waterbody it ranks 9th of 11. 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.