River Basins . . . Rhymney R - conf Nant Cylla to Chapel Wood Combined Sewer Overflow At Rear Of 33 Church Street
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Rhymney R - Conf Nant Cylla To Chapel Wood at Combined Sewer Overflow At Rear Of 33 Church Street

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
Rhymney R - Conf Nant Cylla To Chapel Wood | 16 Spills |
184 hours | 0.7


The declared body of water receiving this discharge is the "Rhymney R - Conf Nant Cylla To Chapel Wood"
This station has discharged sewage 16 time(s).
The station has discharged for a total of 184 hour(s).
This is 0.7% of the time which we have data for.
In total: 7 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 "Combined Sewer Overflow At Rear Of 33 Church Street" is 2023, discharging sewage for 183.2 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
Rhymney R - Conf Nant Cylla To Chapel Wood | 14 Spills |
183.2 hours | 2.09

The declared body of water receiving this discharge is the "Rhymney R - Conf Nant Cylla To Chapel Wood"
This station discharged sewage 14 time(s) during 2023.
The station discharged for a total of 183.2 hour(s).
This is around 7 day(s)* or 2.09% 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 #BB3395FK
Secondary Permit #BB3395FK

2022
Rhymney R - Conf Nant Cylla To Chapel Wood | 0 Spills |
0 hours | 0

The declared body of water receiving this discharge is the "Rhymney R - Conf Nant Cylla To Chapel Wood"
This station discharged sewage 0 time(s) during 2022.
The station discharged for a total of 0 hour(s).
This is around 0 day(s)* or 0% of the year.

99.9 | 0.8 hours
This monitor was operational for 99.9% of the year.
Leaving 0.8 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 #BB3395FK
Secondary Permit #BB3395FK

2021
2 Spills |
0.7 hours | 0

This station discharged sewage 2 time(s) during 2021.
The station discharged for a total of 0.7 hour(s).
This is around 0 day(s)* or 0% of the year.

99.5 | 36.7 hours
This monitor was operational for 99.5% of the year.
Leaving 36.7 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 #BB3395FK
Secondary Permit #BB3395FK


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