Prysor - Upstream Llyn Trawsfynydd at CSO At Trawsfynydd 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.

Sewage Reports that include this Station

Operational Summary - 2022-2023

Prysor - Upstream Llyn Trawsfynydd | 128 Spills |
602.7 hours | 3.44

The declared body of water receiving this discharge is the "Prysor - Upstream Llyn Trawsfynydd"
This station has discharged sewage 128 time(s).
The station has discharged for a total of 602.7 hour(s).
This is 3.44% of the time which we have data for.
In total: 25 day(s)* of elapsed time.

46.5 | 9373.2 hours
This monitor has been operational for 46.5% of its total time we have data for.
There are 9373.2 hours unaccounted for due to downtime of the monitor.

The worst year in our records for the "CSO At Trawsfynydd WWTW" is 2023, discharging sewage for 490.2 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

Prysor - Upstream Llyn Trawsfynydd | 115 Spills |
490.2 hours | 5.59
The declared body of water receiving this discharge is the "Prysor - Upstream Llyn Trawsfynydd"
This station discharged sewage 115 time(s) during 2023.
The station discharged for a total of 490.2 hour(s).
This is around 20 day(s)* or 5.59% of the year.

88.6 | 995.1 hours
This monitor was operational for 88.6% of the year.
Leaving 995.1 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 2023:
Sensor Failure / Issue

*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 #	CB3099ZG
Secondary Permit #	CB3099ZG

2022

Note: Data is potentially unreliable in 2022
Due to high unavailability of the monitor

Prysor - Upstream Llyn Trawsfynydd | 13 Spills |
112.5 hours | 1.28
The declared body of water receiving this discharge is the "Prysor - Upstream Llyn Trawsfynydd"
This station discharged sewage 13 time(s) during 2022.
The station discharged for a total of 112.5 hour(s).
This is around 4 day(s)* or 1.28% of the year.

5.7 | 8256.3 hours
This monitor was operational for 5.7% of the year.
Leaving 8256.3 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:
Sensor Failure / Issue

*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 #	CB3099ZG
Secondary Permit #	CB3099ZG

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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

No nearby stations

Nearby Sewage Discharge Stations

CSO At Trawsfynydd Near Bron Gwyndy

CSO Rear Of Prysor Filling Station Traw

Trawsfynydd Maesgwindy Est CSO

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