Walkden Road/Hoylake Road CSO
Storm overflow operated by United Utilities. The source names Worsley Brook as the receiving water.
- 19
- Spills in 2025
- 27.4
- Recorded hours
- 99.6%
- Monitor operation
- 2
- Years listed
Checking the latest monitor report…
How it compares in 2025
Walkden Road/Hoylake Road CSO recorded 19 spills in 2025. That is more than 62% of the 14,239 overflows in England with a reported figure, and ranks 5,217th nationally. Among United Utilities overflows it ranks 1,030th of 2,270; the median United Utilities overflow recorded 15 spills. On the Folly Brook and Salteye Brook waterbody it ranks 9th of 17.
| Group | Rank by spills | Median spills | Median hours |
|---|---|---|---|
| This outlet | – | 19 | 27.4 |
| England | 5,217th of 14,239 | 11 | 22.3 |
| United Utilities | 1,030th of 2,270 | 15 | 29.1 |
| Folly Brook and Salteye Brook | 9th of 17 | 19 | 22.4 |
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 | 19 | 27.4 hours | 99.6% | Official data |
| 2024 | 0 | 0 hours | 0.1%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
- United Utilities
- Outlet type
- Storm overflow on the sewer network
- Permit
- 016983330
- Activity reference
- A1
- Grid reference
- SD7384002760
- Waterbody ID
- GB112069061430Official 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 0.2 km west of the Walkden reference point in the ONS built-up areas data.
Area and water pages
- Wardley area →
- Clifton (Salford) area →
- Swinton (Salford) area →
- Whitefield area →
- Pendlebury area →
- Salford area →
- Prestwich area →
- Simister area →
- Worsley area →
- Eccles (Salford) area →
- Radcliffe area →
- Old Trafford area →
- Walkden area →
- Stretford area →
- Kearsley area →
- Little Hulton area →
- Farnworth area →
- Little Lever area →
- Astley area →
- Tyldesley area →
- Westhoughton area →
- Higher Folds area →
- Urmston area →
- Wingates area →
- Atherton area →
- Hunger Hill (Bolton) area →
- Chew Moor area →
- Ainsworth area →
- Bolton (Bolton) area →
- Folly Brook and Salteye Brook 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
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United Utilities · Singing Clough Brook
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United Utilities · Kempnough Brook
- Stonehill Trading Estate CSOCurrent status unknown
United Utilities · Singing Clough Brook
- Stonehill Road CSOCurrent status unknown
United Utilities · Singing Clough Brook
Questions about Walkden Road/Hoylake Road CSO
- Who operates Walkden Road/Hoylake Road CSO?
- United Utilities is the operator named in the annual record. The permit reference is 016983330.
- Where does Walkden Road/Hoylake Road CSO discharge?
- The source names Worsley Brook as the receiving water. This does not show how far a discharge travelled.
- How many times did Walkden Road/Hoylake Road CSO spill in 2025?
- The 2025 return records 19 counted spill events and 27.4 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 99.6% of the reporting period, so the annual figures cover most of the year. They still do not measure discharge volume.
- Is Walkden Road/Hoylake Road 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 Walkden Road/Hoylake Road 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 Walkden Road/Hoylake Road CSO compare with other overflows?
- Walkden Road/Hoylake Road CSO recorded 19 spills in 2025. That is more than 62% of the 14,239 overflows in England with a reported figure, and ranks 5,217th nationally. Among United Utilities overflows it ranks 1,030th of 2,270; the median United Utilities overflow recorded 15 spills. On the Folly Brook and Salteye Brook waterbody it ranks 9th of 17. 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.