River Basins Severn Wye MC Wye OC Wye - conf Walford Bk to Bigsweir Br Settled Storm Sewage From Monmouth WWTW
River Basins . . . Wye - conf Walford Bk to Bigsweir Br Settled Storm Sewage From Monmouth WWTW
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Wye - Conf Walford Bk To Bigsweir Br at Settled Storm Sewage From Monmouth WWTW

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
Wye - Conf Walford Bk To Bigsweir Br | 191 Spills |
1701.2 hours | 6.47


The declared body of water receiving this discharge is the "Wye - Conf Walford Bk To Bigsweir Br"
This station has discharged sewage 191 time(s).
The station has discharged for a total of 1701.2 hour(s).
This is 6.47% of the time which we have data for.
In total: 70 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 Sewage From Monmouth WWTW" is 2021, discharging sewage for 724.2 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
Wye - Conf Walford Bk To Bigsweir Br | 66 Spills |
545.2 hours | 6.22

The declared body of water receiving this discharge is the "Wye - Conf Walford Bk To Bigsweir Br"
This station discharged sewage 66 time(s) during 2023.
The station discharged for a total of 545.2 hour(s).
This is around 22 day(s)* or 6.22% of the year.

99.9 | 5.2 hours
This monitor was operational for 99.9% of the year.
Leaving 5.2 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 #AN0353501
Secondary Permit #AN0353501

2022
Wye - Conf Walford Bk To Bigsweir Br | 62 Spills |
431.7 hours | 4.92

The declared body of water receiving this discharge is the "Wye - Conf Walford Bk To Bigsweir Br"
This station discharged sewage 62 time(s) during 2022.
The station discharged for a total of 431.7 hour(s).
This is around 17 day(s)* or 4.92% 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

AttributeValue
Governing BodyNatural Resources Wales
OperatorDwr Cymru Welsh Water
Primary Permit #AN0353501
Secondary Permit #AN0353501

2021
R Wye - Conf Walford Bk To Bigsweir Br | 63 Spills |
724.2 hours | 8.26

The declared body of water receiving this discharge is the "R Wye - Conf Walford Bk To Bigsweir Br"
This station discharged sewage 63 time(s) during 2021.
The station discharged for a total of 724.2 hour(s).
This is around 30 day(s)* or 8.26% 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 #AN0353501
Secondary Permit #AN0353501


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