River Basins . . . Glaslyn - Nanmor to Colwyn CSO At Beddgelert East Bank Afon Glaslyn
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Glaslyn - Nanmor To Colwyn at CSO At Beddgelert East Bank Afon Glaslyn

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
Glaslyn - Nanmor To Colwyn | 224 Spills |
1741.5 hours | 6.62


The declared body of water receiving this discharge is the "Glaslyn - Nanmor To Colwyn"
This station has discharged sewage 224 time(s).
The station has discharged for a total of 1741.5 hour(s).
This is 6.62% of the time which we have data for.
In total: 72 day(s)* of elapsed time.

88.3 | 3066 hours
This monitor has been operational for 88.3% of its total time we have data for.
There are 3066 hours unaccounted for due to downtime of the monitor.


The worst year in our records for the "CSO At Beddgelert East Bank Afon Glaslyn" is 2021, discharging sewage for 852.2 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
Glaslyn - Nanmor To Colwyn | 84 Spills |
530.7 hours | 6.05

The declared body of water receiving this discharge is the "Glaslyn - Nanmor To Colwyn"
This station discharged sewage 84 time(s) during 2023.
The station discharged for a total of 530.7 hour(s).
This is around 22 day(s)* or 6.05% of the year.

96.3 | 322.3 hours
This monitor was operational for 96.3% of the year.
Leaving 322.3 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 #CG0356701
Secondary Permit #CG0356701

2022
Glaslyn - Nanmor To Colwyn | 62 Spills |
358.5 hours | 4.09

The declared body of water receiving this discharge is the "Glaslyn - Nanmor To Colwyn"
This station discharged sewage 62 time(s) during 2022.
The station discharged for a total of 358.5 hour(s).
This is around 14 day(s)* or 4.09% of the year.

75.8 | 2119 hours
This monitor was operational for 75.8% of the year.
Leaving 2119 hours unaccounted for in the data.
This falls below the 90% threshold where a reason should be given

The following reasons have been given for the downtime in 2022:
Comms Failure / Issue


*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 #CG0356701
Secondary Permit #CG0356701

2021
Glaslyn - Nanmor To Colwyn | 78 Spills |
852.2 hours | 9.72

The declared body of water receiving this discharge is the "Glaslyn - Nanmor To Colwyn"
This station discharged sewage 78 time(s) during 2021.
The station discharged for a total of 852.2 hour(s).
This is around 35 day(s)* or 9.72% of the year.

94.5 | 475.6 hours
This monitor was operational for 94.5% of the year.
Leaving 475.6 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 #CG0356701
Secondary Permit #CG0356701


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

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