Rear 2 Well St Malpas CSO

Storm overflow operated by Dŵr Cymru Welsh Water. The source names Unnamed Watercourse as the receiving water.

2
Spills in 2025: 0.8
Recorded hours: 99.7%
Monitor operation: 2
Years listed

Current status unknown

We do not have a live report for this outlet. Its annual spill records are shown below.

How it compares in 2025

Rear 2 Well St Malpas CSO recorded 2 spills in 2025. That is more than 21% of the 14,239 overflows in England with a reported figure, and ranks 10,428th nationally. Among Dŵr Cymru Welsh Water overflows it ranks 99th of 122; the median Dŵr Cymru Welsh Water overflow recorded 14.5 spills.

Group	Rank by spills	Median spills	Median hours
This outlet	–	2	0.8
England	10,428th of 14,239	11	22.3
Dŵr Cymru Welsh Water	99th of 122	14.5	29.3

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 2024 to 2025, the reported count went from 1 to 2 spills. The highest count was 2 in 2025 and the lowest was 1 in 2024. The monitor worked for less than 90% of 2024, so that count 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	2	0.8 hours	99.7%	Official data
2024	1	0.3 hours	72.8%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: Dŵr Cymru Welsh Water
Outlet type: Storm overflow on the sewer network
Permit: EPRMP3422GZ
Activity reference: 1
Grid reference: SJ4891747275
Waterbody ID: GB111067052230Official 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 “SO on sewer network”: storm overflow on the sewer network. The return places this overflow on the sewer network.

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 0.3 km south-east of the Malpas reference point in the ONS built-up areas data.

Area and water pages

Bradley Brook waterbody →

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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Dŵr Cymru Welsh Water · Unnamed Tributary of Wych Brook
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BULKELEY WwTW
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Tattenhall
Dŵr Cymru Welsh Water · Golborne Brook
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BUNBURY WwTW
United Utilities · River Gowy
Current status unknown

Questions about Rear 2 Well St Malpas CSO

Who operates Rear 2 Well St Malpas CSO?: Dŵr Cymru Welsh Water is the operator named in the annual record. The permit reference is EPRMP3422GZ.
Where does Rear 2 Well St Malpas CSO discharge?: The source names Unnamed Watercourse as the receiving water. This does not show how far a discharge travelled.
How many times did Rear 2 Well St Malpas CSO spill in 2025?: The 2025 return records 2 counted spill events and 0.8 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 99.7% of the reporting period, so the annual figures cover most of the year. They still do not measure discharge volume.
Is Rear 2 Well St Malpas CSO 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 Rear 2 Well St Malpas CSO?: 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 Rear 2 Well St Malpas CSO compare with other overflows?: Rear 2 Well St Malpas CSO recorded 2 spills in 2025. That is more than 21% of the 14,239 overflows in England with a reported figure, and ranks 10,428th nationally. Among Dŵr Cymru Welsh Water overflows it ranks 99th of 122; the median Dŵr Cymru Welsh Water overflow recorded 14.5 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.