Dee - Ceiriog To Alwen at Cefn Mawr STW Heol Berwyn Cefn Mawr Settled Storm

This is a sewage discharge monitoring station, which is usually a type of Event Duration Monitor (EDM).
These stations themselves are designed to mitigate the impact of heavy rainfall by discharging, under permitted conditions, any overflow into a water body. They are often actively discharging during flood events.
This page presents the data acquired by the monitoring system for this discharge station.

Sewage Reports that include this Station

Operational Summary - 2021-2022

Dee - Ceiriog To Alwen | 123 Spills |
967 hours | 5.51

The declared body of water receiving this discharge is the "Dee - Ceiriog To Alwen"
This station has discharged sewage 123 time(s).
The station has discharged for a total of 967 hour(s).
This is 5.51% of the time which we have data for.
In total: 40 day(s)* of elapsed time.

99 | 175.2 hours
This monitor has been operational for 99% of its total time we have data for.
There are 175.2 hours unaccounted for due to downtime of the monitor.

The worst year in our records for the "Cefn Mawr STW Heol Berwyn Cefn Mawr Settled Storm" is 2021, discharging sewage for 636.2 hours of the year.

Uptimes below 90% (red line) should be accompanied by a reason

*This is total time in days, not individual days.

Yearly Summary

Most Recent Year - 2022

Dee - Ceiriog To Alwen | 48 Spills |
330.7 hours | 3.77
The declared body of water receiving this discharge is the "Dee - Ceiriog To Alwen"
This station discharged sewage 48 time(s) during 2022.
The station discharged for a total of 330.7 hour(s).
This is around 13 day(s)* or 3.77% of the year.

99.9 | 6.1 hours
This monitor was operational for 99.9% of the year.
Leaving 6.1 hours unaccounted for in the data.

*This is total time in days, not individual days of the year.

Permit & Governance

Attribute	Value
Governing Body	Natural Resources Wales
Operator	Dwr Cymru Welsh Water
Primary Permit #	CG0405901
Secondary Permit #	CG0405901

2021

Trefnant Brook | 75 Spills |
636.2 hours | 7.26
The declared body of water receiving this discharge is the "Trefnant Brook"
This station discharged sewage 75 time(s) during 2021.
The station discharged for a total of 636.2 hour(s).
This is around 26 day(s)* or 7.26% of the year.

99.9 | 8.7 hours
This monitor was operational for 99.9% of the year.
Leaving 8.7 hours unaccounted for in the data.

*This is total time in days, not individual days of the year.

Permit & Governance

Attribute	Value
Governing Body	Natural Resources Wales
Operator	Dwr Cymru Welsh Water
Primary Permit #	CG0405901
Secondary Permit #	CG0405901

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Operator comments are presented, unedited, as they were received by us and do not reflect our views or position

Local Information

Nearby Flood Warnings

None

Nearby Alert Areas

None

Nearby Stations

Corwen River Station

Station Data Information

Station overseen (meaning either provided, or regulated) by: Natural Resources Wales
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