St Agnes STW So Truro
Storm overflow operated by South West Water. The source names Atlantic Ocean(C) as the receiving water.
- 0
- Spills in 2025
- 0
- Recorded hours
- 100%
- Monitor operation
- 3
- Years listed
The reported spill count was 2 lower than in 2024. This compares event counts, not discharge volume.
Checking the latest monitor report…
How it compares in 2025
St Agnes STW So Truro recorded no spills in 2025. It is one of 2,231 overflows in England with a reported count of zero, out of 14,239 with a count.
| Group | Rank by spills | Median spills | Median hours |
|---|---|---|---|
| This outlet | – | 0 | 0 |
| England | 12,009th of 14,239 | 11 | 22.3 |
| South West Water | 1,180th 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 | 0 | 0 hours | 100% | Official data |
| 2024 | 2 | 1.4 hours | 100% | Official data |
| 2023 | 14 | 12.1 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
- Storm tank at a wastewater treatment works
- Permit
- 303394
- Activity reference
- A2
- Grid reference
- SW71545173
- Waterbody ID
- Unknown
- 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 “Storm tank at WwTW”: storm tank at a wastewater treatment works. The overflow comes from storm storage at a treatment works.
Where it is
The recorded position is about 1.5 km north-west of the St Agnes reference point in the ONS built-up areas data.
Designated bathing waters within 3 km in a straight line:
Distance does not show that water from this outlet reaches a bathing water. Check the official bathing-water profile for its classification and advice.
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
- Cove Boat Pound SPS Pscsoeo St AgnesCurrent status unknown
South West Water · Trevaunance Stream(S)
- Peterville Spst Pscsoeo St AgnesCurrent status unknown
South West Water · Trevaunance Stream(S)
- PORTHTOWAN BEACH No1 SPS PSCSOEO PTOWANCurrent status unknown
South West Water · River Kenwyn
- PORTHTOWAN No2 SPST PSCSOEO PORTHTOWANCurrent status unknown
South West Water · Porthtowan Stream (S)
Questions about St Agnes STW So Truro
- Who operates St Agnes STW So Truro?
- South West Water is the operator named in the annual record. The permit reference is 303394.
- Where does St Agnes STW So Truro discharge?
- The source names Atlantic Ocean(C) as the receiving water. This does not show how far a discharge travelled.
- How many times did St Agnes STW So Truro spill in 2025?
- The 2025 return records 0 counted spill events and 0 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 St Agnes STW So Truro 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 St Agnes STW So Truro?
- The annual return lists the asset type as “Storm tank at WwTW”, which means storm tank at a wastewater treatment works. The overflow comes from storm storage at a treatment works.
- How does St Agnes STW So Truro compare with other overflows?
- St Agnes STW So Truro recorded no spills in 2025. It is one of 2,231 overflows in England with a reported count of zero, out of 14,239 with a count. 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.