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
Bow Brook | 147 Spills | 700.4 hours | 2.66
The declared body of water receiving this discharge is the "Bow Brook" This station has discharged sewage 147 time(s). The station has discharged for a total of 700.4 hour(s). This is 2.66% of the time which we have data for. In total: 29 day(s)* of elapsed time.
85.6 | 3766.7 hours This monitor has been operational for 85.6% of its total time we have data for. There are 3766.79 hours unaccounted for due to downtime of the monitor.
The worst year in our records for the "Opposite St Stephen's Hall" is 2021, discharging sewage for 560.3 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
Bow Brook | 60 Spills | 62.7 hours | 0.71 The declared body of water receiving this discharge is the "Bow Brook" This station discharged sewage 60 time(s) during 2023. The station discharged for a total of 62.7 hour(s). This is around 2 day(s)* or 0.71% of the year.
77.5 | 1964.8 hours This monitor was operational for 77.5% of the year. Leaving 1964.8 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 2023: Comms Failure / Issue
The following description has been given for downtime related actions intended, or taken, by the operator in 2023: N/A - Ongoing Investigation
*This is total time in days, not individual days of the year.
Permit & Governance
Attribute
Value
Governing Body
The Environment Agency
Operator
Thames Water
Primary Permit #
TEMP.1644
Secondary Permit #
TEMP.1644
2022
Bow Brook | 23 Spills | 77.3 hours | 0.88 The declared body of water receiving this discharge is the "Bow Brook" This station discharged sewage 23 time(s) during 2022. The station discharged for a total of 77.3 hour(s). This is around 3 day(s)* or 0.88% of the year. The following reasons have been given for the high spill frequency in 2022: Performance - Gw Inundation The following comments have been given on the station operators intended actions: Scheduled
84.9 | 1322.7 hours This monitor was operational for 84.9% of the year. Leaving 1322.7 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 2022: Sensor Failure / Issue
The following description has been given for downtime related actions intended, or taken, by the operator in 2022: N/A - Ongoing Investigation
*This is total time in days, not individual days of the year.
Permit & Governance
Attribute
Value
Governing Body
The Environment Agency
Operator
Thames Water
Primary Permit #
TEMP.1644
Secondary Permit #
TEMP.1644
2021
Bow Brook | 64 Spills | 560.3 hours | 6.39 The declared body of water receiving this discharge is the "Bow Brook" This station discharged sewage 64 time(s) during 2021. The station discharged for a total of 560.3 hour(s). This is around 23 day(s)* or 6.39% of the year. The following reasons have been given for the high spill frequency in 2021: Performance - Infiltration The following comments have been given on the station operators intended actions: N/A - Ongoing Investigation
96.5 | 303 hours This monitor was operational for 96.5% of the year. Leaving 303 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
Thames Water
Primary Permit #
TEMP.1644
Secondary Permit #
TEMP.1644
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