Milverton Storm Tank
Storm overflow operated by Wessex Water. The source names Hillfarrance Brook as the receiving water.
- 35
- Spills in 2025
- 444
- Recorded hours
- 89.8%
- Monitor operation
- 5
- Years listed
Checking the latest monitor report…
How it compares in 2025
Milverton Storm Tank recorded 35 spills in 2025. That is more than 78% of the 14,239 overflows in England with a reported figure, and ranks 2,896th nationally. Among Wessex Water overflows it ranks 240th of 1,332; the median Wessex Water overflow recorded 11 spills. On the Hillfarrance Bk waterbody it ranks 3rd of 6.
The monitor worked for 89.8% of 2025, so this count may be low and its rank may understate activity.
| Group | Rank by spills | Median spills | Median hours |
|---|---|---|---|
| This outlet | – | 35 | 444 |
| England | 2,896th of 14,239 | 11 | 22.3 |
| Wessex Water | 240th of 1,332 | 11 | 18.9 |
| Hillfarrance Bk | 3rd of 6 | 28 | 79.7 |
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 | 35 | 444 hours | 89.8%Low coverage | Official data |
| 2024 | 97 | 917.5 hours | 99.7% | Official data |
| 2023 | 109 | 1,351 hours | 100% | Official data |
| 2022 | 58 | 475 hours | 100% | Official data |
| 2020 | 64 | 368.3 hours | 99.8% | 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
- Wessex Water
- Outlet type
- Storm tank at a wastewater treatment works
- Permit
- 070076
- Activity reference
- 2-SETTLEMENT TREATMENT ONLY
- Grid reference
- ST1337025890
- Waterbody ID
- GB108052015510Official 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 “Storm tank at WwTW”: storm tank at a wastewater treatment works. The overflow comes from storm storage at a treatment 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 1.2 km east of the Milverton 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
- Milverton Houndsmoor LaneCurrent status unknown
Wessex Water · Tributary of Hillfarrance Brook
- Hillcommon Hill CommonCurrent status unknown
Wessex Water · Tributary of River Tone
- Halse InletCurrent status unknown
Wessex Water · Tributary of Halse Water(S)
- Sandhill Park Storm TankCurrent status unknown
Wessex Water · Tributary of Halse Water
Questions about Milverton Storm Tank
- Who operates Milverton Storm Tank?
- Wessex Water is the operator named in the annual record. The permit reference is 070076.
- Where does Milverton Storm Tank discharge?
- The source names Hillfarrance Brook as the receiving water. This does not show how far a discharge travelled.
- How many times did Milverton Storm Tank spill in 2025?
- The 2025 return records 35 counted spill events and 444 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 89.8% of the reporting period. Below 90%, some events can be missed, so the count and hours may understate activity.
- Is Milverton Storm Tank 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 Milverton Storm Tank?
- 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 Milverton Storm Tank compare with other overflows?
- Milverton Storm Tank recorded 35 spills in 2025. That is more than 78% of the 14,239 overflows in England with a reported figure, and ranks 2,896th nationally. Among Wessex Water overflows it ranks 240th of 1,332; the median Wessex Water overflow recorded 11 spills. On the Hillfarrance Bk waterbody it ranks 3rd of 6. 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.