Tolleshunt D'Arcy Sewage Treatment Works
Storm overflow operated by Anglian Water. The source names Bowstead Brook River Blackwate as the receiving water.
- 3
- Spills in 2025
- 1.3
- Recorded hours
- 93.5%
- Monitor operation
- 5
- Years listed
The reported spill count was 11 lower than in 2024. This compares event counts, not discharge volume.
We do not have a live report for this outlet. Its annual spill records are shown below.
How it compares in 2025
Tolleshunt D'Arcy Sewage Treatment Works recorded 3 spills in 2025. That is more than 26% of the 14,239 overflows in England with a reported figure, and ranks 9,843rd nationally. Among Anglian Water overflows it ranks 874th of 1,438; the median Anglian Water overflow recorded 6 spills. On the Blackwater waterbody it ranks 9th of 14.
| Group | Rank by spills | Median spills | Median hours |
|---|---|---|---|
| This outlet | – | 3 | 1.3 |
| England | 9,843rd of 14,239 | 11 | 22.3 |
| Anglian Water | 874th of 1,438 | 6 | 13.5 |
| Blackwater | 9th of 14 | 4 | 16 |
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 | 3 | 1.3 hours | 93.5% | Official data |
| 2024 | 14 | 24.3 hours | 99.4% | Official data |
| 2023 | 18 | 41.3 hours | 99.6% | Official data |
| 2022 | 1 | 0.5 hours | 100% | Official data |
| 2021 | 7 | 6.8 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
- Anglian Water
- Outlet type
- Other storm discharge asset type, with treatment
- Permit
- ASENF1317
- Activity reference
- A2
- Grid reference
- TL9220010500
- Waterbody ID
- GB520503714000Official 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 “Other storm discharge asset type - with treatment”: other storm discharge asset type, with treatment. The return uses its general category for this asset. The return records this variant as discharging with treatment.
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 1.6 km south-west of the Tolleshunt D'Arcy 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
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Anglian Water · Penny's Brook River Blackwater
- Maldon STWCurrent status unknown
Anglian Water · Tributary of Pennys Brook
- Great Totham STWCurrent status unknown
Anglian Water · Spicketts Brook NT Blackwater
- Maldon-Fambridge RdCurrent status unknown
Anglian Water · River Blackwater
Questions about Tolleshunt D'Arcy Sewage Treatment Works
- Who operates Tolleshunt D'Arcy Sewage Treatment Works?
- Anglian Water is the operator named in the annual record. The permit reference is ASENF1317.
- Where does Tolleshunt D'Arcy Sewage Treatment Works discharge?
- The source names Bowstead Brook River Blackwate as the receiving water. This does not show how far a discharge travelled.
- How many times did Tolleshunt D'Arcy Sewage Treatment Works spill in 2025?
- The 2025 return records 3 counted spill events and 1.3 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 93.5% of the reporting period, so the annual figures cover most of the year. They still do not measure discharge volume.
- Is Tolleshunt D'Arcy Sewage Treatment Works discharging right now?
- This record is not matched to a company live feed, so we cannot show a current report. Only the annual figures are available for this outlet.
- 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 Tolleshunt D'Arcy Sewage Treatment Works?
- The annual return lists the asset type as “Other storm discharge asset type - with treatment”, which means other storm discharge asset type, with treatment. The return uses its general category for this asset. The return records this variant as discharging with treatment.
- How does Tolleshunt D'Arcy Sewage Treatment Works compare with other overflows?
- Tolleshunt D'Arcy Sewage Treatment Works recorded 3 spills in 2025. That is more than 26% of the 14,239 overflows in England with a reported figure, and ranks 9,843rd nationally. Among Anglian Water overflows it ranks 874th of 1,438; the median Anglian Water overflow recorded 6 spills. On the Blackwater waterbody it ranks 9th of 14. 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.