Harberton STW So Harberton
Storm overflow operated by South West Water. The source names Harbeton Stream as the receiving water.
- 52
- Spills in 2025
- 179
- Recorded hours
- 100%
- Monitor operation
- 5
- Years listed
The reported spill count was 17 lower than in 2024. This compares event counts, not discharge volume.
Checking the latest monitor report…
How it compares in 2025
Harberton STW So Harberton recorded 52 spills in 2025. That is more than 88% of the 14,239 overflows in England with a reported figure, and ranks 1,512th nationally. Among South West Water overflows it ranks 329th of 1,357; the median South West Water overflow recorded 21 spills. On the Harbourne River waterbody it ranks 3rd of 3.
| Group | Rank by spills | Median spills | Median hours |
|---|---|---|---|
| This outlet | – | 52 | 179 |
| England | 1,512th of 14,239 | 11 | 22.3 |
| South West Water | 329th of 1,357 | 21 | 39.4 |
| Harbourne River | 3rd of 3 | 116 | 1,659.7 |
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 | 52 | 179 hours | 100% | Official data |
| 2024 | 69 | 557.2 hours | 99.7% | Official data |
| 2023 | 157 | 1,665.6 hours | 98.8% | Official data |
| 2022 | 129 | 2,136.5 hours | 87%Low coverage | Official data |
| 2021 | 166 | 2,635.2 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
- NRA-SW-5295
- Activity reference
- A3
- Grid reference
- SX77715829
- Waterbody ID
- GB108046005170Official 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 3.4 km south-west of the Totnes 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
- Harberton STW SSO HarbertonCurrent status unknown
South West Water · Harbeton Stream
- Quarry Close CSO TotnesCurrent status unknown
South West Water · Tributary of Malt Mill Lake
- Lower Collapark CSO TotnesCurrent status unknown
South West Water · Malt Mill Lake via SWS
- St Johns Terrace CSO TotnesCurrent status unknown
South West Water · Malt Mill Lake via SW Sewer
Questions about Harberton STW So Harberton
- Who operates Harberton STW So Harberton?
- South West Water is the operator named in the annual record. The permit reference is NRA-SW-5295.
- Where does Harberton STW So Harberton discharge?
- The source names Harbeton Stream as the receiving water. This does not show how far a discharge travelled.
- How many times did Harberton STW So Harberton spill in 2025?
- The 2025 return records 52 counted spill events and 179 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 Harberton STW So Harberton 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 Harberton STW So Harberton?
- 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 Harberton STW So Harberton compare with other overflows?
- Harberton STW So Harberton recorded 52 spills in 2025. That is more than 88% of the 14,239 overflows in England with a reported figure, and ranks 1,512th nationally. Among South West Water overflows it ranks 329th of 1,357; the median South West Water overflow recorded 21 spills. On the Harbourne River waterbody it ranks 3rd 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.