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
Grimesmoor Dyke | 93 Spills | 127.2 hours | 0.48
The declared body of water receiving this discharge is the "Grimesmoor Dyke" This station has discharged sewage 93 time(s). The station has discharged for a total of 127.2 hour(s). This is 0.48% of the time which we have data for. In total: 5 day(s)* of elapsed time.
78.6 | 5606.3 hours This monitor has been operational for 78.6% of its total time we have data for. There are 5606.39 hours unaccounted for due to downtime of the monitor.
The worst year in our records for the "Calverton STW" is 2023, discharging sewage for 65.2 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
Note: Data is potentially unreliable in 2023 Due to high unavailability of the monitor
Grimesmoor Dyke | 19 Spills | 65.2 hours | 0.74 The declared body of water receiving this discharge is the "Grimesmoor Dyke" This station discharged sewage 19 time(s) during 2023. The station discharged for a total of 65.2 hour(s). This is around 2 day(s)* or 0.74% of the year.
54.5 | 3985.8 hours This monitor was operational for 54.5% of the year. Leaving 3985.8 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: Sensor Failure / Issue
The following description has been given for downtime related actions intended, or taken, by the operator in 2023: Resolved - Sep
*This is total time in days, not individual days of the year.
Permit & Governance
Attribute
Value
Governing Body
The Environment Agency
Operator
Severn Trent Water
Primary Permit #
T/64/45588/R
Secondary Permit #
T/64/45588/R
2022
Grimesmoor Dyke | 37 Spills | 36.8 hours | 0.42 The declared body of water receiving this discharge is the "Grimesmoor Dyke" This station discharged sewage 37 time(s) during 2022. The station discharged for a total of 36.8 hour(s). This is around 1 day(s)* or 0.42% 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
99.9 | 7 hours This monitor was operational for 99.9% of the year. Leaving 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
Severn Trent Water
Primary Permit #
T/64/45588/R
Secondary Permit #
T/64/45588/R
2021
Grimesmoor Dyke | 37 Spills | 25.1 hours | 0.28 The declared body of water receiving this discharge is the "Grimesmoor Dyke" This station discharged sewage 37 time(s) during 2021. The station discharged for a total of 25.1 hour(s). This is around 1 day(s)* or 0.28% of the year. The following comments have been given on the station operators intended actions: Scheduled
83.1 | 1477.8 hours This monitor was operational for 83.1% of the year. Leaving 1477.8 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 2021: Installation Set-Up/Design Issue
The following description has been given for downtime related actions intended, or taken, by the operator in 2021: Resolved - September
*This is total time in days, not individual days of the year.
Permit & Governance
Attribute
Value
Governing Body
The Environment Agency
Operator
Severn Trent Water
Primary Permit #
T/64/45588/R
Secondary Permit #
T/64/45588/R
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