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
Golbourne Brook | 251 Spills | 1160 hours | 4.41
The declared body of water receiving this discharge is the "Golbourne Brook" This station has discharged sewage 251 time(s). The station has discharged for a total of 1160 hour(s). This is 4.41% of the time which we have data for. In total: 48 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 At Tattenhall STW" is 2023, discharging sewage for 551.2 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
Golbourne Brook | 91 Spills | 551.2 hours | 6.29 The declared body of water receiving this discharge is the "Golbourne Brook" This station discharged sewage 91 time(s) during 2023. The station discharged for a total of 551.2 hour(s). This is around 22 day(s)* or 6.29% 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
99.7 | 25.4 hours This monitor was operational for 99.7% of the year. Leaving 25.4 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 #
CM0105502
Secondary Permit #
CM0105502
2022
Golbourne Brook | 77 Spills | 254.7 hours | 2.9 The declared body of water receiving this discharge is the "Golbourne Brook" This station discharged sewage 77 time(s) during 2022. The station discharged for a total of 254.7 hour(s). This is around 10 day(s)* or 2.9% of the year. The following reasons have been given for the high spill frequency in 2022: N/A - Ongoing Investigation The following comments have been given on the station operators intended actions: Scheduled
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
Attribute
Value
Governing Body
The Environment Agency
Operator
Dwr Cymru Welsh Water
Primary Permit #
CM0105502
Secondary Permit #
CM0105502
2021
Golbourne Brook | 83 Spills | 354 hours | 4.04 The declared body of water receiving this discharge is the "Golbourne Brook" This station discharged sewage 83 time(s) during 2021. The station discharged for a total of 354 hour(s). This is around 14 day(s)* or 4.04% of the year. The following comments have been given on the station operators intended actions: N/A - Ongoing Investigation
99.9 | 1.7 hours This monitor was operational for 99.9% of the year. Leaving 1.7 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 #
CM0105502
Secondary Permit #
CM0105502
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Local Information
Nearby Flood Warnings
None
Nearby Alert Areas
Mill Brook at Tattenhall
River Dee catchment in England from Whitchurch to Chester
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