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
Afon Nodwydd | 355 Spills | 3709.5 hours | 14.11
The declared body of water receiving this discharge is the "Afon Nodwydd" This station has discharged sewage 355 time(s). The station has discharged for a total of 3709.5 hour(s). This is 14.11% of the time which we have data for. In total: 154 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 "Pentraeth STW" is 2023, discharging sewage for 1694.2 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
159 Spills | 1694.2 hours | 19.34 This station discharged sewage 159 time(s) during 2023. The station discharged for a total of 1694.2 hour(s). This is around 70 day(s)* or 19.34% 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
Attribute
Value
Governing Body
Natural Resources Wales
Operator
Dwr Cymru Welsh Water
Primary Permit #
CG0325501
Secondary Permit #
CG0325501
2022
67 Spills | 541.7 hours | 6.18 This station discharged sewage 67 time(s) during 2022. The station discharged for a total of 541.7 hour(s). This is around 22 day(s)* or 6.18% 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
Attribute
Value
Governing Body
Natural Resources Wales
Operator
Dwr Cymru Welsh Water
Primary Permit #
CG0325501
Secondary Permit #
CG0325501
2021
Afon Nodwydd | 129 Spills | 1473.5 hours | 16.82 The declared body of water receiving this discharge is the "Afon Nodwydd" This station discharged sewage 129 time(s) during 2021. The station discharged for a total of 1473.5 hour(s). This is around 61 day(s)* or 16.82% of the year.
99.9 | 3.5 hours This monitor was operational for 99.9% of the year. Leaving 3.5 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 #
CG0325501
Secondary Permit #
CG0325501
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Station overseen (meaning either provided, or regulated) by: Natural Resources Wales The information displayed here is used under license. We are not affiliated with any governing, or other, bodies. Nor do they necessarily endorse us, or us them. Please note that FloodMapper does not verify or check the accuracy of the data provided by third parties. The data is used as received from the source. Any underlying errors, inconsistencies, or inaccuracies in the original data will be reflected in the information presented on our platform. Users are advised to exercise their own judgment and caution when using the data for decision-making purposes. Information about our data sources and licenses can be found
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