Dunkeswell STW So Dunkeswell
Storm overflow operated by South West Water. The source names River Madford as the receiving water.
- 21
- Spills in 2025
- 121.1
- Recorded hours
- 98.4%
- Monitor operation
- 5
- Years listed
The reported spill count was 32 lower than in 2024. This compares event counts, not discharge volume.
Checking the latest monitor report…
How it compares in 2025
Dunkeswell STW So Dunkeswell recorded 21 spills in 2025. That is more than 64% of the 14,239 overflows in England with a reported figure, and ranks 4,856th nationally. Among South West Water overflows it ranks 677th of 1,357; the median South West Water overflow recorded 21 spills. On the Madford River waterbody it ranks 1st of 3.
| Group | Rank by spills | Median spills | Median hours |
|---|---|---|---|
| This outlet | – | 21 | 121.1 |
| England | 4,856th of 14,239 | 11 | 22.3 |
| South West Water | 677th of 1,357 | 21 | 39.4 |
| Madford River | 1st of 3 | 19 | 52.7 |
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 | 21 | 121.1 hours | 98.4% | Official data |
| 2024 | 53 | 302.7 hours | 100% | Official data |
| 2023 | 64 | 307.2 hours | 100% | Official data |
| 2022 | 2 | 3.3 hours | 92% | Official data |
| 2021 | 62 | 404.7 hours | 98% | 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
- South West Water
- Outlet type
- Inlet storm overflow at a wastewater treatment works
- Permit
- 203109
- Activity reference
- A3
- Grid reference
- ST15190858
- Waterbody ID
- GB108045014920Official waterbody record ↗
- Location source
- Official annual grid reference
- Location precision
- About 10 metres
- Location note
- Unknown
About the name and type
The annual return lists this asset as “Inlet SO at WwTW”: inlet storm overflow at a wastewater treatment works. The overflow is at the inlet of a treatment works, where wastewater enters the works.
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 2 km north-east of the Dunkeswell 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
- Dunkeswell STW SSO DunkeswellCurrent status unknown
South West Water · River Madford
- Dunkeswell SPS Pscsoeo DunkeswellCurrent status unknown
South West Water · Dunkeswell Stream(S)
- Castle Park CSO HemyockCurrent status unknown
South West Water · Stream (S)
- Hemyock Spst Pscsoeo HemyockCurrent status unknown
South West Water · River Culm (S)
Questions about Dunkeswell STW So Dunkeswell
- Who operates Dunkeswell STW So Dunkeswell?
- South West Water is the operator named in the annual record. The permit reference is 203109.
- Where does Dunkeswell STW So Dunkeswell discharge?
- The source names River Madford as the receiving water. This does not show how far a discharge travelled.
- How many times did Dunkeswell STW So Dunkeswell spill in 2025?
- The 2025 return records 21 counted spill events and 121.1 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 98.4% of the reporting period, so the annual figures cover most of the year. They still do not measure discharge volume.
- Is Dunkeswell STW So Dunkeswell 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 10 metres. It shows the recorded outlet position, not the extent of any discharge.
- What kind of outlet is Dunkeswell STW So Dunkeswell?
- The annual return lists the asset type as “Inlet SO at WwTW”, which means inlet storm overflow at a wastewater treatment works. The overflow is at the inlet of a treatment works, where wastewater enters the works.
- How does Dunkeswell STW So Dunkeswell compare with other overflows?
- Dunkeswell STW So Dunkeswell recorded 21 spills in 2025. That is more than 64% of the 14,239 overflows in England with a reported figure, and ranks 4,856th nationally. Among South West Water overflows it ranks 677th of 1,357; the median South West Water overflow recorded 21 spills. On the Madford River waterbody it ranks 1st of 3. 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.