River Basins Severn South East Valleys Ely Nant Clun - source to conf Ely R Settled Storm Overflow At Rhiwsaeson Wastewater Treatment Works
River Basins . . . Nant Clun - source to conf Ely R Settled Storm Overflow At Rhiwsaeson Wastewater Treatment Works
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Nant Clun - Source To Conf Ely R at Settled Storm Overflow At Rhiwsaeson Wastewater Treatment Works

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.
Operational Summary - 2021-2023
Nant Clun - Source To Conf Ely R | 581 Spills |
5272.5 hours | 20.06


The declared body of water receiving this discharge is the "Nant Clun - Source To Conf Ely R"
This station has discharged sewage 581 time(s).
The station has discharged for a total of 5272.5 hour(s).
This is 20.06% of the time which we have data for.
In total: 219 day(s)* of elapsed time.

99.3 | 175.2 hours
This monitor has been operational for 99.3% 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 "Settled Storm Overflow At Rhiwsaeson Wastewater Treatment Works" is 2023, discharging sewage for 2383.2 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 - 2023
Nant Clun - Source To Conf Ely R | 214 Spills |
2383.2 hours | 27.2

The declared body of water receiving this discharge is the "Nant Clun - Source To Conf Ely R"
This station discharged sewage 214 time(s) during 2023.
The station discharged for a total of 2383.2 hour(s).
This is around 99 day(s)* or 27.2% of the year.

99.9 | 0.8 hours
This monitor was operational for 99.9% of the year.
Leaving 0.8 hours unaccounted for in the data.


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

Permit & Governance

AttributeValue
Governing BodyNatural Resources Wales
OperatorDwr Cymru Welsh Water
Primary Permit #AG0019402
Secondary Permit #AG0019402

2022
Nant Clun - Source To Conf Ely R | 164 Spills |
1190.7 hours | 13.59

The declared body of water receiving this discharge is the "Nant Clun - Source To Conf Ely R"
This station discharged sewage 164 time(s) during 2022.
The station discharged for a total of 1190.7 hour(s).
This is around 49 day(s)* or 13.59% of the year.

100 | 0 hours
This monitor was operational for 100% of the year.
Leaving 0 hours unaccounted for in the data.


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

Permit & Governance

AttributeValue
Governing BodyNatural Resources Wales
OperatorDwr Cymru Welsh Water
Primary Permit #AG0019402
Secondary Permit #AG0019402

2021
Nant Clun - Source To Conf Ely R | 203 Spills |
1698.5 hours | 19.38

The declared body of water receiving this discharge is the "Nant Clun - Source To Conf Ely R"
This station discharged sewage 203 time(s) during 2021.
The station discharged for a total of 1698.5 hour(s).
This is around 70 day(s)* or 19.38% of the year.

99.9 | 7.8 hours
This monitor was operational for 99.9% of the year.
Leaving 7.8 hours unaccounted for in the data.


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

Permit & Governance

AttributeValue
Governing BodyNatural Resources Wales
OperatorDwr Cymru Welsh Water
Primary Permit #AG0019402
Secondary Permit #AG0019402


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