Treeton/CSO
Storm overflow operated by Yorkshire Water. The source names Tributary of the River Rother as the receiving water.
- 17
- Spills in 2025
- 71
- Recorded hours
- 100%
- Monitor operation
- 6
- Years listed
The reported spill count was 2 lower than in 2024. This compares event counts, not discharge volume.
We do not have a live report for this outlet. Its annual spill records are shown below.
How it compares in 2025
Treeton/CSO recorded 17 spills in 2025. That is more than 59% of the 14,239 overflows in England with a reported figure, and ranks 5,597th nationally. Among Yorkshire Water overflows it ranks 1,042nd of 2,176; the median Yorkshire Water overflow recorded 16 spills. On the Rother, Doe Lea to Don waterbody it ranks 17th of 31.
| Group | Rank by spills | Median spills | Median hours |
|---|---|---|---|
| This outlet | – | 17 | 71 |
| England | 5,597th of 14,239 | 11 | 22.3 |
| Yorkshire Water | 1,042nd of 2,176 | 16 | 37.8 |
| Rother, Doe Lea to Don | 17th of 31 | 19 | 49.3 |
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 | 17 | 71 hours | 100% | Official data |
| 2024 | 19 | 56.5 hours | 100% | Official data |
| 2023 | 21 | 74.3 hours | 99.7% | Official data |
| 2022 | 27 | 68 hours | 98.7% | Official data |
| 2021 | 31 | 65.5 hours | 100% | Official data |
| 2020 | 21 | 46.9 hours | 100% | 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
- Yorkshire Water
- Outlet type
- Storm discharge at a pumping station
- Permit
- 2250
- Activity reference
- 3
- Grid reference
- SK3889092820
- Waterbody ID
- GB104027057772Official 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 “Storm discharge at pumping station”: storm discharge at a pumping station. The overflow is at a pumping station that moves sewage through the 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 3.2 km south of the Thorpe Hesley reference point in the ONS built-up areas data.
Area and water pages
- Waverley and Catcliffe area →
- Greasbrough area →
- Brinsworth area →
- Rotherham area →
- Sheffield area →
- Thorpe Hesley area →
- Ecclesfield and Grenoside area →
- Treeton area →
- Wentworth (Rotherham) area →
- Rawmarsh area →
- Whiston area →
- Jump area →
- Brampton (Rotherham) area →
- Hoyland area →
- Chapeltown and High Green area →
- Hemingfield area →
- Rother, Doe Lea to Don 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
- Blackburn/CSOCurrent status unknown
Yorkshire Water · Permit applied for
- Treeton Lane/CSOCurrent status unknown
Yorkshire Water · Tributary of the River Rother
- Whiston Vale/CSOCurrent status unknown
Yorkshire Water · Tributary of the River Rother
- Fife Street/CSOCurrent status unknown
Yorkshire Water · Blackburn Brook
Questions about Treeton/CSO
- Who operates Treeton/CSO?
- Yorkshire Water is the operator named in the annual record. The permit reference is 2250.
- Where does Treeton/CSO discharge?
- The source names Tributary of the River Rother as the receiving water. This does not show how far a discharge travelled.
- How many times did Treeton/CSO spill in 2025?
- The 2025 return records 17 counted spill events and 71 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 Treeton/CSO discharging right now?
- This record is not matched to a company live feed, so we cannot show a current report. Only the annual figures are available for this outlet.
- 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 Treeton/CSO?
- The annual return lists the asset type as “Storm discharge at pumping station”, which means storm discharge at a pumping station. The overflow is at a pumping station that moves sewage through the network.
- How does Treeton/CSO compare with other overflows?
- Treeton/CSO recorded 17 spills in 2025. That is more than 59% of the 14,239 overflows in England with a reported figure, and ranks 5,597th nationally. Among Yorkshire Water overflows it ranks 1,042nd of 2,176; the median Yorkshire Water overflow recorded 16 spills. On the Rother, Doe Lea to Don waterbody it ranks 17th of 31. 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.