South Park Hall / Stocks Lane Heskin CSO (123Ik)
Storm overflow operated by United Utilities. The source names Syd Brook as the receiving water.
- 8
- Spills in 2025
- 11.9
- Recorded hours
- 82.9%
- Monitor operation
- 2
- Years listed
Checking the latest monitor report…
How it compares in 2025
South Park Hall / Stocks Lane Heskin CSO (123Ik) recorded 8 spills in 2025. That is more than 42% of the 14,239 overflows in England with a reported figure, and ranks 7,797th nationally. Among United Utilities overflows it ranks 1,377th of 2,270; the median United Utilities overflow recorded 15 spills. On the Syd Brook waterbody it ranks 3rd of 4.
The monitor worked for 82.9% of 2025, so this count may be low and its rank may understate activity.
| Group | Rank by spills | Median spills | Median hours |
|---|---|---|---|
| This outlet | – | 8 | 11.9 |
| England | 7,797th of 14,239 | 11 | 22.3 |
| United Utilities | 1,377th of 2,270 | 15 | 29.1 |
| Syd Brook | 3rd of 4 | 18.5 | 64.2 |
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 | 8 | 11.9 hours | 82.9%Low coverage | Official data |
| 2024 | 17 | 84.3 hours | 93% | 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
- United Utilities
- Outlet type
- Storm overflow on the sewer network
- Permit
- 01CHR0012
- Activity reference
- A1
- Grid reference
- SD5336015480
- Waterbody ID
- GB112070064920Official 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 0.6 km north of the Heskin Green 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
- Park Hall Road combined sewer overflow (CHR0012a)Current status unknown
United Utilities · Syd Brook
- Brook Lane PSCurrent status unknown
United Utilities · unnamed tributary of Syd Brook
- Cowling Farm CSOCurrent status unknown
United Utilities · Clancutt Brook
- Hewlett Avenue CSOCurrent status unknown
United Utilities · Tanyard Brook
Questions about South Park Hall / Stocks Lane Heskin CSO (123Ik)
- Who operates South Park Hall / Stocks Lane Heskin CSO (123Ik)?
- United Utilities is the operator named in the annual record. The permit reference is 01CHR0012.
- Where does South Park Hall / Stocks Lane Heskin CSO (123Ik) discharge?
- The source names Syd Brook as the receiving water. This does not show how far a discharge travelled.
- How many times did South Park Hall / Stocks Lane Heskin CSO (123Ik) spill in 2025?
- The 2025 return records 8 counted spill events and 11.9 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 82.9% of the reporting period. Below 90%, some events can be missed, so the count and hours may understate activity.
- Is South Park Hall / Stocks Lane Heskin CSO (123Ik) 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 South Park Hall / Stocks Lane Heskin CSO (123Ik)?
- 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 South Park Hall / Stocks Lane Heskin CSO (123Ik) compare with other overflows?
- South Park Hall / Stocks Lane Heskin CSO (123Ik) recorded 8 spills in 2025. That is more than 42% of the 14,239 overflows in England with a reported figure, and ranks 7,797th nationally. Among United Utilities overflows it ranks 1,377th of 2,270; the median United Utilities overflow recorded 15 spills. On the Syd Brook waterbody it ranks 3rd of 4. 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.