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Dee - Alwen To Llyn Tegid at Bala WWTW Storm Tank

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 - 2021-2023
Dee - Alwen To Llyn Tegid | 261 Spills |
2449 hours | 9.31


The declared body of water receiving this discharge is the "Dee - Alwen To Llyn Tegid"
This station has discharged sewage 261 time(s).
The station has discharged for a total of 2449 hour(s).
This is 9.31% of the time which we have data for.
In total: 102 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 "Bala WWTW Storm Tank" is 2021, discharging sewage for 1116.5 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
Dee - Alwen To Llyn Tegid | 55 Spills |
641.5 hours | 7.32

The declared body of water receiving this discharge is the "Dee - Alwen To Llyn Tegid"
This station discharged sewage 55 time(s) during 2023.
The station discharged for a total of 641.5 hour(s).
This is around 26 day(s)* or 7.32% of the year.

99.9 | 3.5 hours
This monitor was operational for 99.9% of the year.
Leaving 3.5 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 #CG0428901
Secondary Permit #CG0428901

2022
Dee - Alwen To Llyn Tegid | 89 Spills |
691 hours | 7.88

The declared body of water receiving this discharge is the "Dee - Alwen To Llyn Tegid"
This station discharged sewage 89 time(s) during 2022.
The station discharged for a total of 691 hour(s).
This is around 28 day(s)* or 7.88% of the year.

99.3 | 56 hours
This monitor was operational for 99.3% of the year.
Leaving 56 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 #CG0428901
Secondary Permit #CG0428901

2021
Tryweryn - Dee To Mynach | 117 Spills |
1116.5 hours | 12.74

The declared body of water receiving this discharge is the " Tryweryn - Dee To Mynach"
This station discharged sewage 117 time(s) during 2021.
The station discharged for a total of 1116.5 hour(s).
This is around 46 day(s)* or 12.74% of the year.

99.8 | 14.8 hours
This monitor was operational for 99.8% of the year.
Leaving 14.8 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 #CG0428901
Secondary Permit #CG0428901


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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
No flood warning icon

River Dee communities from Llanuwchllyn to Llangollen


No flood warning icon

Town of Bala


No flood warning icon

Upper Dee catchment


 
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