Grafton Bridge/CSO
Storm overflow operated by Yorkshire Water. The source names River Don as the receiving water.
- 107
- Spills in 2025
- 1,507.3
- Recorded hours
- 100%
- Monitor operation
- 6
- Years listed
Checking the latest monitor report…
How it compares in 2025
Grafton Bridge/CSO recorded 107 spills in 2025. That is more than 98% of the 14,239 overflows in England with a reported figure, and ranks 195th nationally. Among Yorkshire Water overflows it ranks 20th of 2,176; the median Yorkshire Water overflow recorded 16 spills. On the Don from Greasborough Dyke to River Dearne waterbody it ranks 1st of 37.
| Group | Rank by spills | Median spills | Median hours |
|---|---|---|---|
| This outlet | – | 107 | 1,507.3 |
| England | 195th of 14,239 | 11 | 22.3 |
| Yorkshire Water | 20th of 2,176 | 16 | 37.8 |
| Don from Greasborough Dyke to River Dearne | 1st of 37 | 15 | 72.8 |
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 | 107 | 1,507.3 hours | 100% | Official data |
| 2024 | 133 | 1,986 hours | 84%Low coverage | Official data |
| 2023 | 104 | 1,615.3 hours | 99.3% | Official data |
| 2022 | 34 | 477.5 hours | 97.8% | Official data |
| 2021 | 48 | 715.5 hours | 99.9% | Official data |
| 2020 | 43 | 813.5 hours | 93.9% | 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
- WRA7691
- Activity reference
- A2
- Grid reference
- SK4312593717
- Waterbody ID
- GB104027057452Official 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 0.9 km north of the Rotherham reference point in the ONS built-up areas data.
Area and water pages
- Waverley and Catcliffe area →
- Greasbrough area →
- Brinsworth area →
- Rotherham 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 →
- Don from Greasborough Dyke to River Dearne 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
- Clifton Park/CSOCurrent status unknown
Yorkshire Water · Tributary of the River Don
- Middle Lane South/CSOCurrent status unknown
Yorkshire Water · Permit applied for
- Rawmarsh Road/CSOCurrent status unknown
Yorkshire Water · River Don
- Crinolene House/CSOCurrent status unknown
Yorkshire Water · Don via Surface Water Sewer
Questions about Grafton Bridge/CSO
- Who operates Grafton Bridge/CSO?
- Yorkshire Water is the operator named in the annual record. The permit reference is WRA7691.
- Where does Grafton Bridge/CSO discharge?
- The source names River Don as the receiving water. This does not show how far a discharge travelled.
- How many times did Grafton Bridge/CSO spill in 2025?
- The 2025 return records 107 counted spill events and 1,507.3 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 Grafton Bridge/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 Grafton Bridge/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 Grafton Bridge/CSO compare with other overflows?
- Grafton Bridge/CSO recorded 107 spills in 2025. That is more than 98% of the 14,239 overflows in England with a reported figure, and ranks 195th nationally. Among Yorkshire Water overflows it ranks 20th of 2,176; the median Yorkshire Water overflow recorded 16 spills. On the Don from Greasborough Dyke to River Dearne waterbody it ranks 1st of 37. 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.