Menai Strait at Llanfair Pg WWTW CSO
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.
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
1697.2 hours | 6.45
The declared body of water receiving this discharge is the "Menai Strait"
This station has discharged sewage 346 time(s).
The station has discharged for a total of 1697.2 hour(s).
This is 6.45% of the time which we have data for.
In total: 70 day(s)* of elapsed time.
99 | 262.8 hours
This monitor has been operational for 99% of its total time we have data for.
There are 262.8 hours unaccounted for due to downtime of the monitor.
The worst year in our records for the "Llanfair Pg WWTW CSO" is 2021, discharging sewage for 698.7 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
675.5 hours | 7.71
The declared body of water receiving this discharge is the "Menai Strait"
This station discharged sewage 132 time(s) during 2023.
The station discharged for a total of 675.5 hour(s).
This is around 28 day(s)* or 7.71% of the year.
99.6 | 30.6 hours
This monitor was operational for 99.6% of the year.
Leaving 30.6 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 # | CG0081201 |
| Secondary Permit # | CG0081201 |
2022
323 hours | 3.68
The declared body of water receiving this discharge is the "Menai Strait"
This station discharged sewage 103 time(s) during 2022.
The station discharged for a total of 323 hour(s).
This is around 13 day(s)* or 3.68% of the year.
98.8 | 102.4 hours
This monitor was operational for 98.8% of the year.
Leaving 102.4 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 # | CG0081201 |
| Secondary Permit # | CG0081201 |
2021
698.7 hours | 7.97
The declared body of water receiving this discharge is the "Menai Strait"
This station discharged sewage 111 time(s) during 2021.
The station discharged for a total of 698.7 hour(s).
This is around 29 day(s)* or 7.97% 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
| Attribute | Value |
|---|---|
| Governing Body | Natural Resources Wales |
| Operator | Dwr Cymru Welsh Water |
| Primary Permit # | CG0081201 |
| Secondary Permit # | CG0081201 |
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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
Station Data Information
Station overseen (meaning either provided, or regulated) by: Natural Resources Wales
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Please note that FloodMapper does not verify or check the accuracy of the data provided by third parties. The data is used as received from the source. Any underlying errors, inconsistencies, or inaccuracies in the original data will be reflected in the information presented on our platform. Users are advised to exercise their own judgment and caution when using the data for decision-making purposes.
Information about our data sources and licenses can be found
The information displayed here is used under license. We are not affiliated with any governing, or other, bodies. Nor do they necessarily endorse us, or us them.
Please note that FloodMapper does not verify or check the accuracy of the data provided by third parties. The data is used as received from the source. Any underlying errors, inconsistencies, or inaccuracies in the original data will be reflected in the information presented on our platform. Users are advised to exercise their own judgment and caution when using the data for decision-making purposes.
Information about our data sources and licenses can be found
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