Quethiock STW So Quethiock
Storm overflow operated by South West Water. The source names Tributary of the River Tiddy as the receiving water.
- 34
- Spills in 2025
- 20.9
- Recorded hours
- 100%
- Monitor operation
- 5
- Years listed
The reported spill count was 27 higher than in 2024. This compares event counts, not discharge volume.
Checking the latest monitor report…
How it compares in 2025
Quethiock STW So Quethiock recorded 34 spills in 2025. That is more than 78% of the 14,239 overflows in England with a reported figure, and ranks 3,010th nationally. Among South West Water overflows it ranks 498th of 1,357; the median South West Water overflow recorded 21 spills.
| Group | Rank by spills | Median spills | Median hours |
|---|---|---|---|
| This outlet | – | 34 | 20.9 |
| England | 3,010th of 14,239 | 11 | 22.3 |
| South West Water | 498th of 1,357 | 21 | 39.4 |
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 | 34 | 20.9 hours | 100% | Official data |
| 2024 | 7 | 10.7 hours | 100% | Official data |
| 2023 | 7 | 1.2 hours | 100% | Official data |
| 2022 | 103 | 224.7 hours | 100% | Official data |
| 2021 | 310 | 902 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
- South West Water
- Outlet type
- Inlet storm overflow at a wastewater treatment works
- Permit
- SWWA 1148
- Activity reference
- A2
- Grid reference
- SX31296461
- Waterbody ID
- GB108047003890Official 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 3.1 km north-east of the Menheniot 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
- Blunts S T STW So TidefordCurrent status unknown
South West Water · Blunts Stream (S)(LYHNER Tributary)
- Pillaton STW SSO PillatonCurrent status unknown
South West Water · River Lynher
- Callington STW SSO CallingtonCurrent status unknown
South West Water · Haye Valley Stream
- Golberdon STW So GolberdonCurrent status unknown
South West Water · River Lynher
Questions about Quethiock STW So Quethiock
- Who operates Quethiock STW So Quethiock?
- South West Water is the operator named in the annual record. The permit reference is SWWA 1148.
- Where does Quethiock STW So Quethiock discharge?
- The source names Tributary of the River Tiddy as the receiving water. This does not show how far a discharge travelled.
- How many times did Quethiock STW So Quethiock spill in 2025?
- The 2025 return records 34 counted spill events and 20.9 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 Quethiock STW So Quethiock 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 Quethiock STW So Quethiock?
- 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 Quethiock STW So Quethiock compare with other overflows?
- Quethiock STW So Quethiock recorded 34 spills in 2025. That is more than 78% of the 14,239 overflows in England with a reported figure, and ranks 3,010th nationally. Among South West Water overflows it ranks 498th of 1,357; the median South West Water overflow recorded 21 spills. 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.