Kimblesworth CSO
Storm overflow operated by Northumbrian Water. The source names Blackdene Burn as the receiving water.
- 14
- Spills in 2025
- 1.9
- Recorded hours
- 83.9%
- Monitor operation
- 2
- Years listed
Checking the latest monitor report…
How it compares in 2025
Kimblesworth CSO recorded 14 spills in 2025. That is more than 54% of the 14,239 overflows in England with a reported figure, and ranks 6,208th nationally. Among Northumbrian Water overflows it ranks 674th of 1,559; the median Northumbrian Water overflow recorded 11 spills. On the Blackdene Burn to confluence with Wear waterbody it ranks 5th of 6.
The monitor worked for 83.9% of 2025, so this count may be low and its rank may understate activity.
| Group | Rank by spills | Median spills | Median hours |
|---|---|---|---|
| This outlet | – | 14 | 1.9 |
| England | 6,208th of 14,239 | 11 | 22.3 |
| Northumbrian Water | 674th of 1,559 | 11 | 15.6 |
| Blackdene Burn to confluence with Wear | 5th of 6 | 25 | 42.6 |
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 | 14 | 1.9 hours | 83.9%Low coverage | Official data |
| 2024 | Unknown | Unknown | 0%Low coverage | 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
- EPRBB3398RS
- Activity reference
- A1
- Grid reference
- NZ2646447467
- Waterbody ID
- GB103024077622Official 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 0.5 km east of the Nettlesworth and Kimblesworth reference point in the ONS built-up areas data.
Area and water pages
- Kibblesworth area →
- Birtley area →
- Urpeth area →
- Pelton and Ouston area →
- Beamish area →
- Whitehill (County Durham) area →
- Sacriston area →
- Nettlesworth and Kimblesworth area →
- Chester-le-Street area →
- Durham area →
- Newfield area →
- Great Lumley area →
- West Pelton area →
- Fence Houses area →
- Houghton-le-Spring area →
- High Pittington area →
- Penshaw area →
- Witton Gilbert area →
- Craghead area →
- East Rainton area →
- Ushaw Moor and Bearpark area →
- Sherburn (County Durham) area →
- West Rainton area →
- Bournmoor area →
- Stanley (County Durham) area →
- Shiney Row and Penshaw area →
- Brandon (County Durham) area →
- Langley Park area →
- Hetton le Hill area →
- Sherburn Hill area →
- Hetton-le-Hole area →
- High Shincliffe area →
- Easington Lane area →
- New Brancepeth area →
- Blackdene Burn to confluence with Wear 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
- Plawsworth CSO Mh1Current status unknown
Northumbrian Water · Black Dene Burn
- Plawsworth Sewage Treatment WorksCurrent status unknown
Northumbrian Water · Black Dene Burn
- Plawsworth Gate Combined Sewer OverflowCurrent status unknown
Northumbrian Water · Blackdene Burn
- Pity Me Roundabout CSOCurrent status unknown
Northumbrian Water · Pity Me Beck
Questions about Kimblesworth CSO
- Who operates Kimblesworth CSO?
- Northumbrian Water is the operator named in the annual record. The permit reference is EPRBB3398RS.
- Where does Kimblesworth CSO discharge?
- The source names Blackdene Burn as the receiving water. This does not show how far a discharge travelled.
- How many times did Kimblesworth CSO spill in 2025?
- The 2025 return records 14 counted spill events and 1.9 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 83.9% of the reporting period. Below 90%, some events can be missed, so the count and hours may understate activity.
- Is Kimblesworth 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 Kimblesworth 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 Kimblesworth CSO compare with other overflows?
- Kimblesworth CSO recorded 14 spills in 2025. That is more than 54% of the 14,239 overflows in England with a reported figure, and ranks 6,208th nationally. Among Northumbrian Water overflows it ranks 674th of 1,559; the median Northumbrian Water overflow recorded 11 spills. On the Blackdene Burn to confluence with Wear waterbody it ranks 5th of 6. 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.