St Johns Terrace CSO Totnes

Storm overflow operated by South West Water. The source names Malt Mill Lake via SW Sewer as the receiving water.

20
Spills in 2025: 5.2
Recorded hours: 98.7%
Monitor operation: 5
Years listed

The reported spill count was 2 higher than in 2024. This compares event counts, not discharge volume.

Current status unknown

Checking the latest monitor report…

How it compares in 2025

St Johns Terrace CSO Totnes recorded 20 spills in 2025. That is more than 63% of the 14,239 overflows in England with a reported figure, and ranks 5,045th nationally. Among South West Water overflows it ranks 696th of 1,357; the median South West Water overflow recorded 21 spills.

Group	Rank by spills	Median spills	Median hours
This outlet	–	20	5.2
England	5,045th of 14,239	11	22.3
South West Water	696th 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

From 2021 to 2025, the reported count went from 23 to 20 spills. The highest count was 23 in 2021 and the lowest was 10 in 2023. The monitor worked for less than 90% of 2021, 2022, 2023, so those counts may be low.Amber bars mark years when the monitor worked for less than 90% of the year.

Year	Spills	Duration	Monitor operation	Source
2025	20	5.2 hours	98.7%	Official data
2024	18	5.6 hours	94.2%	Official data
2023	10	4 hours	87%Low coverage	Official data
2022	12	3 hours	83%Low coverage	Official data
2021	23	6.8 hours	87%Low coverage	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 overflow on the sewer network
Permit: 202242
Activity reference: A1
Grid reference: SX80056071
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 “SO on sewer network”: storm overflow on the sewer network. The return places this overflow on the sewer network.

Where it is

The recorded position is about 0.3 km north-west of the Totnes reference point in the ONS built-up areas data.

Designated bathing waters within 3 km in a straight line:

Steamer Quay, Dart Estuary1.3 km

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

Lower Collapark CSO Totnes
South West Water · Malt Mill Lake via SWS
Current status unknown

Swallowfields CSO Totnes
South West Water · River Dart Estuary (E)
Current status unknown
Totnes Town Spst Pscsoeo Totnes
South West Water · River Dart (Estuarine)
Current status unknown
31 Fore Street CSO Totnes
South West Water · Tributary of R.DART(E) via SW Sewer
Current status unknown

Questions about St Johns Terrace CSO Totnes

Who operates St Johns Terrace CSO Totnes?: South West Water is the operator named in the annual record. The permit reference is 202242.
Where does St Johns Terrace CSO Totnes discharge?: The source names Malt Mill Lake via SW Sewer as the receiving water. This does not show how far a discharge travelled.
How many times did St Johns Terrace CSO Totnes spill in 2025?: The 2025 return records 20 counted spill events and 5.2 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 98.7% of the reporting period, so the annual figures cover most of the year. They still do not measure discharge volume.
Is St Johns Terrace CSO Totnes 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 Johns Terrace CSO Totnes?: The annual return lists the asset type as “SO on sewer network”, which means storm overflow on the sewer network. The return places this overflow on the sewer network.
How does St Johns Terrace CSO Totnes compare with other overflows?: St Johns Terrace CSO Totnes recorded 20 spills in 2025. That is more than 63% of the 14,239 overflows in England with a reported figure, and ranks 5,045th nationally. Among South West Water overflows it ranks 696th 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.