Glaslyn at Pentrefelin STW
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
3053 hours | 11.61
The declared body of water receiving this discharge is the "Glaslyn"
This station has discharged sewage 354 time(s).
The station has discharged for a total of 3053 hour(s).
This is 11.61% of the time which we have data for.
In total: 127 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 "Pentrefelin STW" is 2023, discharging sewage for 1258.2 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
1258.2 hours | 14.36
The declared body of water receiving this discharge is the "Glaslyn"
This station discharged sewage 141 time(s) during 2023.
The station discharged for a total of 1258.2 hour(s).
This is around 52 day(s)* or 14.36% 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
| Attribute | Value |
|---|---|
| Governing Body | Natural Resources Wales |
| Operator | Dwr Cymru Welsh Water |
| Primary Permit # | CG0364501 |
| Secondary Permit # | CG0364501 |
2022
870 hours | 9.93
The declared body of water receiving this discharge is the "Glaslyn"
This station discharged sewage 97 time(s) during 2022.
The station discharged for a total of 870 hour(s).
This is around 36 day(s)* or 9.93% of the year.
99.8 | 12.2 hours
This monitor was operational for 99.8% of the year.
Leaving 12.2 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 # | CG0364501 |
| Secondary Permit # | CG0364501 |
2021
924.7 hours | 10.55
The declared body of water receiving this discharge is the " Un-Named Tributary Tremadog Bay"
This station discharged sewage 116 time(s) during 2021.
The station discharged for a total of 924.7 hour(s).
This is around 38 day(s)* or 10.55% of the year.
99.6 | 33.2 hours
This monitor was operational for 99.6% of the year.
Leaving 33.2 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 # | CG0364501 |
| Secondary Permit # | CG0364501 |
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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
None
Nearby Stations
Garndolbenmaen
Nearby Sewage Discharge Stations
Criccieth East Ps
Criccieth West Ps
CSO At Garndolbenmaen STW
CSO On Sewer (Criccieth Beach)
Morfa Bychan WWTW
Tremadog Sso
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