Upwell Street/CSO
Storm overflow operated by Yorkshire Water. The source names Not matched in EA Consents Database as the receiving water.
- 10
- Spills in 2025
- 10.3
- Recorded hours
- 100%
- Monitor operation
- 4
- Years listed
The reported spill count was 15 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
Upwell Street/CSO recorded 10 spills in 2025. That is more than 47% of the 14,239 overflows in England with a reported figure, and ranks 7,195th nationally. Among Yorkshire Water overflows it ranks 1,279th of 2,176; the median Yorkshire Water overflow recorded 16 spills. On the Don from River Loxley confl to River Don Works waterbody it ranks 14th of 28.
| Group | Rank by spills | Median spills | Median hours |
|---|---|---|---|
| This outlet | – | 10 | 10.3 |
| England | 7,195th of 14,239 | 11 | 22.3 |
| Yorkshire Water | 1,279th of 2,176 | 16 | 37.8 |
| Don from River Loxley confl to River Don Works | 14th of 28 | 10 | 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 | 10 | 10.3 hours | 100% | Official data |
| 2024 | 25 | 46.3 hours | 100% | Official data |
| 2023 | 35 | 75.3 hours | 100% | Official data |
| 2020 | 6 | 8.4 hours | 58.6%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
- Yorkshire Water
- Outlet type
- Storm overflow on the sewer network
- Permit
- 2301
- Activity reference
- 1
- Grid reference
- SK3851890505
- Waterbody ID
- GB104027057412Official 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 3.5 km west of the Brinsworth 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 →
- Highlane area →
- Ridgeway area →
- Chapeltown and High Green area →
- Don from River Loxley confl to River Don Works 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
- Meadowhall Way/No 2 CSOCurrent status unknown
Yorkshire Water · River Don
- Vulcan Road/CSOCurrent status unknown
Yorkshire Water · Tributary of the River Don
- Alsing Road/CSOCurrent status unknown
Yorkshire Water · Blackburn Brook
- Newman Drive/CSOCurrent status unknown
Yorkshire Water · Tributary of Blackburn Brook
Questions about Upwell Street/CSO
- Who operates Upwell Street/CSO?
- Yorkshire Water is the operator named in the annual record. The permit reference is 2301.
- Where does Upwell Street/CSO discharge?
- The source names Not matched in EA Consents Database as the receiving water. This does not show how far a discharge travelled.
- How many times did Upwell Street/CSO spill in 2025?
- The 2025 return records 10 counted spill events and 10.3 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 Upwell Street/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 Upwell Street/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 Upwell Street/CSO compare with other overflows?
- Upwell Street/CSO recorded 10 spills in 2025. That is more than 47% of the 14,239 overflows in England with a reported figure, and ranks 7,195th nationally. Among Yorkshire Water overflows it ranks 1,279th of 2,176; the median Yorkshire Water overflow recorded 16 spills. On the Don from River Loxley confl to River Don Works waterbody it ranks 14th of 28. 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.