River Basins Humber Trent Lower and Erewash Erewash River Erewash from Gilt Brook to Trent Ilkeston (Hallam Fields) WWTW
River Erewash at Ilkeston (Hallam Fields) WWTW
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.
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.
Operational Summary - 2021-2024
13871.9 hours | 39.56
The declared body of water receiving this discharge is the "River Erewash"
This station has discharged sewage 694 time(s).
The station has discharged for a total of 13871.9 hour(s).
This is 39.56% of the time which we have data for.
In total: 577 day(s)* of elapsed time.
92.7 | 2542.1 hours
This monitor has been operational for 92.7% of its total time we have data for.
There are 2542.14 hours unaccounted for due to downtime of the monitor.
The worst year in our records for the "Ilkeston (Hallam Fields) WWTW" is 2021, discharging sewage for 8354 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
1196 hours | 13.61
The declared body of water receiving this discharge is the "River Erewash"
This station discharged sewage 95 time(s) during 2024.
The station discharged for a total of 1196 hour(s).
This is around 49 day(s)* or 13.61% of the year.
The following reasons have been given for the high spill frequency in 2024:
Performance - Infiltration
The following comments have been given on the station operators intended actions:
Operational Improvement Completed
87.3 | 1115.5 hours
This monitor was operational for 87.3% of the year.
Leaving 1115.5 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:
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 | Severn Trent Water |
| Primary Permit # | T/61/45626/R |
| Secondary Permit # | T/61/45626/R |
2023
2856.6 hours | 32.61
The declared body of water receiving this discharge is the "River Erewash"
This station discharged sewage 160 time(s) during 2023.
The station discharged for a total of 2856.6 hour(s).
This is around 119 day(s)* or 32.61% of the year.
The following reasons have been given for the high spill frequency in 2023:
Data Collection - Confirmed Exceptional Weather – Remaining Spills Not Above Soaf Threshold
The following comments have been given on the station operators intended actions:
Resolved - January After Reporting Year
96.6 | 297.8 hours
This monitor was operational for 96.6% of the year.
Leaving 297.8 hours unaccounted for in the data.
*This is total time in days, not individual days of the year.
Permit & Governance
| Attribute | Value |
|---|---|
| Governing Body | The Environment Agency |
| Operator | Severn Trent Water |
| Primary Permit # | T/61/45626/R |
| Secondary Permit # | T/61/45626/R |
2022
1465.2 hours | 16.72
The declared body of water receiving this discharge is the "River Erewash"
This station discharged sewage 89 time(s) during 2022.
The station discharged for a total of 1465.2 hour(s).
This is around 61 day(s)* or 16.72% of the year.
The following reasons have been given for the high spill frequency in 2022:
Not Asset Maintenance - Hydraulic Capacity
The following comments have been given on the station operators intended actions:
N/A - Hydraulic Capacity
93.2 | 593 hours
This monitor was operational for 93.2% of the year.
Leaving 593 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/61/45626/R |
| Secondary Permit # | T/61/45626/R |
2021
8354 hours | 95.36
The declared body of water receiving this discharge is the "River Erewash"
This station discharged sewage 350 time(s) during 2021.
The station discharged for a total of 8354 hour(s).
This is around 348 day(s)* or 95.36% of the year.
The following reasons have been given for the high spill frequency in 2021:
Not Asset Maintenance - Hydraulic Capacity
The following comments have been given on the station operators intended actions:
N/A – Hydraulic Capacity
95.3 | 407.3 hours
This monitor was operational for 95.3% of the year.
Leaving 407.3 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/61/45626/R |
| Secondary Permit # | T/61/45626/R |
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Operator comments are presented, unedited, as they were received by us and do not reflect our views or position
Local Information
Nearby Flood Warnings
None
Nearby Alert Areas
Station Data Information
Station overseen (meaning either provided, or regulated) by: The Environment Agency
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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
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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