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.
View Reports that include this Station
Operational Summary - 2021-2024
River Ceiriog | 205 Spills | 2113 hours | 6.02
The declared body of water receiving this discharge is the "River Ceiriog" This station has discharged sewage 205 time(s). The station has discharged for a total of 2113 hour(s). This is 6.02% of the time which we have data for. In total: 88 day(s)* of elapsed time.
81 | 6662.1 hours This monitor has been operational for 81% of its total time we have data for. There are 6662.16 hours unaccounted for due to downtime of the monitor.
The worst year in our records for the "Chirk Bank Ps" is 2023, discharging sewage for 1664.7 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 - 2024
Note: Data is potentially unreliable in 2024 Due to high unavailability of the monitor
River Ceiriog | 12 Spills | 151 hours | 1.71 The declared body of water receiving this discharge is the "River Ceiriog" This station discharged sewage 12 time(s) during 2024. The station discharged for a total of 151 hour(s). This is around 6 day(s)* or 1.71% of the year. The following reasons have been given for the high spill frequency in 2024: High Spill Threshold Not Met The following comments have been given on the station operators intended actions: No Improvement Action In Reporting Period
27.1 | 6399.1 hours This monitor was operational for 27.1% of the year. Leaving 6399.1 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 2024: Installation Set-Up/Design Issue
The following description has been given for downtime related actions intended, or taken, by the operator in 2024: Resolved - Sep
*This is total time in days, not individual days of the year.
Permit & Governance
Attribute
Value
Governing Body
The Environment Agency
Operator
Dwr Cymru Welsh Water
Primary Permit #
CM0230601
Secondary Permit #
CM0230601
2023
River Ceiriog | 144 Spills | 1664.7 hours | 19 The declared body of water receiving this discharge is the "River Ceiriog" This station discharged sewage 144 time(s) during 2023. The station discharged for a total of 1664.7 hour(s). This is around 69 day(s)* or 19% of the year. The following reasons have been given for the high spill frequency in 2023: N/A - Ongoing Investigation The following comments have been given on the station operators intended actions: N/A - Ongoing Investigation
99.6 | 34.1 hours This monitor was operational for 99.6% of the year. Leaving 34.1 hours unaccounted for in the data.
*This is total time in days, not individual days of the year.
Permit & Governance
Attribute
Value
Governing Body
The Environment Agency
Operator
Dwr Cymru Welsh Water
Primary Permit #
CM0230601
Secondary Permit #
CM0230601
2022
River Ceiriog | 20 Spills | 38.5 hours | 0.43 The declared body of water receiving this discharge is the "River Ceiriog" This station discharged sewage 20 time(s) during 2022. The station discharged for a total of 38.5 hour(s). This is around 1 day(s)* or 0.43% of the year.
99.9 | 8.7 hours This monitor was operational for 99.9% of the year. Leaving 8.7 hours unaccounted for in the data.
*This is total time in days, not individual days of the year.
Permit & Governance
Attribute
Value
Governing Body
The Environment Agency
Operator
Dwr Cymru Welsh Water
Primary Permit #
CM0230601
Secondary Permit #
CM0230601
2021
Ceiriog - Confluence Dee To Teirw | 29 Spills | 258.7 hours | 2.95 The declared body of water receiving this discharge is the "Ceiriog - Confluence Dee To Teirw" This station discharged sewage 29 time(s) during 2021. The station discharged for a total of 258.7 hour(s). This is around 10 day(s)* or 2.95% 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
The Environment Agency
Operator
Dwr Cymru Welsh Water
Primary Permit #
CM0230601
Secondary Permit #
CM0230601
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