River Basins . . . Marlas - headwaters to confluence with Loughor Settled Storm Overflow At Carmel Wastewater Treatment Works
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Marlas - Headwaters To Confluence With Loughor at Settled Storm Overflow At Carmel Wastewater Treatment Works

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.
Operational Summary - 2021-2023
Marlas - Headwaters To Confluence With Loughor | 578 Spills |
10621 hours | 40.41


The declared body of water receiving this discharge is the "Marlas - Headwaters To Confluence With Loughor"
This station has discharged sewage 578 time(s).
The station has discharged for a total of 10621 hour(s).
This is 40.41% of the time which we have data for.
In total: 442 day(s)* of elapsed time.

94.3 | 1489.2 hours
This monitor has been operational for 94.3% of its total time we have data for.
There are 1489.2 hours unaccounted for due to downtime of the monitor.


The worst year in our records for the "Settled Storm Overflow At Carmel Wastewater Treatment Works" is 2022, discharging sewage for 3900.7 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
Marlas - Headwaters To Confluence With Loughor | 165 Spills |
3052.5 hours | 34.84

The declared body of water receiving this discharge is the "Marlas - Headwaters To Confluence With Loughor"
This station discharged sewage 165 time(s) during 2023.
The station discharged for a total of 3052.5 hour(s).
This is around 127 day(s)* or 34.84% of the year.

84.5 | 1357.8 hours
This monitor was operational for 84.5% of the year.
Leaving 1357.8 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

AttributeValue
Governing BodyNatural Resources Wales
OperatorDwr Cymru Welsh Water
Primary Permit #BP0361601
Secondary Permit #BP0361601

2022
Marlas - Headwaters To Confluence With Loughor | 226 Spills |
3900.7 hours | 44.52

The declared body of water receiving this discharge is the "Marlas - Headwaters To Confluence With Loughor"
This station discharged sewage 226 time(s) during 2022.
The station discharged for a total of 3900.7 hour(s).
This is around 162 day(s)* or 44.52% 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

AttributeValue
Governing BodyNatural Resources Wales
OperatorDwr Cymru Welsh Water
Primary Permit #BP0361601
Secondary Permit #BP0361601

2021
Marlais - Headwaters To Confluence With Loughor | 187 Spills |
3667.7 hours | 41.86

The declared body of water receiving this discharge is the "Marlais - Headwaters To Confluence With Loughor"
This station discharged sewage 187 time(s) during 2021.
The station discharged for a total of 3667.7 hour(s).
This is around 152 day(s)* or 41.86% 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

AttributeValue
Governing BodyNatural Resources Wales
OperatorDwr Cymru Welsh Water
Primary Permit #BP0361601
Secondary Permit #BP0361601


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Local Information
Station Data Information
Station overseen (meaning either provided, or regulated) by: Natural Resources Wales
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