River Basins CSO And Eo At Deganwy Pumping Station
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Conwy at CSO And Eo At Deganwy Pumping Station

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
Conwy | 377 Spills |
491 hours | 1.86


The declared body of water receiving this discharge is the "Conwy"
This station has discharged sewage 377 time(s).
The station has discharged for a total of 491 hour(s).
This is 1.86% of the time which we have data for.
In total: 20 day(s)* of elapsed time.

99.3 | 175.2 hours
This monitor has been operational for 99.3% of its total time we have data for.
There are 175.2 hours unaccounted for due to downtime of the monitor.


The worst year in our records for the "CSO And Eo At Deganwy Pumping Station" is 2021, discharging sewage for 261.5 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
Conwy | 119 Spills |
140.7 hours | 1.6

The declared body of water receiving this discharge is the "Conwy"
This station discharged sewage 119 time(s) during 2023.
The station discharged for a total of 140.7 hour(s).
This is around 5 day(s)* or 1.6% of the year.

99.8 | 15.7 hours
This monitor was operational for 99.8% of the year.
Leaving 15.7 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 #CG0379501
Secondary Permit #CG0379501

2022
Conwy | 115 Spills |
88.7 hours | 1.01

The declared body of water receiving this discharge is the "Conwy"
This station discharged sewage 115 time(s) during 2022.
The station discharged for a total of 88.7 hour(s).
This is around 3 day(s)* or 1.01% of the year.

99.9 | 2.6 hours
This monitor was operational for 99.9% of the year.
Leaving 2.6 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 #CG0379501
Secondary Permit #CG0379501

2021
Afon Conwy | 143 Spills |
261.5 hours | 2.98

The declared body of water receiving this discharge is the "Afon Conwy"
This station discharged sewage 143 time(s) during 2021.
The station discharged for a total of 261.5 hour(s).
This is around 10 day(s)* or 2.98% 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 #CG0379501
Secondary Permit #CG0379501


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