River Derwent at Belper Sewage Treatment Works

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

River Derwent | 107 Spills |
1135.7 hours | 4.32

The declared body of water receiving this discharge is the "River Derwent"
This station has discharged sewage 107 time(s).
The station has discharged for a total of 1135.7 hour(s).
This is 4.32% of the time which we have data for.
In total: 47 day(s)* of elapsed time.

95.6 | 1138.7 hours
This monitor has been operational for 95.6% of its total time we have data for.
There are 1138.79 hours unaccounted for due to downtime of the monitor.

The worst year in our records for the "Belper Sewage Treatment Works" is 2021, discharging sewage for 596.8 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

River Derwent | 12 Spills |
188.7 hours | 2.15
The declared body of water receiving this discharge is the "River Derwent"
This station discharged sewage 12 time(s) during 2023.
The station discharged for a total of 188.7 hour(s).
This is around 7 day(s)* or 2.15% 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

98.4 | 140.1 hours
This monitor was operational for 98.4% of the year.
Leaving 140.1 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	Severn Trent Water
Primary Permit #	T/42/46187/R
Secondary Permit #	T/42/46187/R

2022

River Derwent | 35 Spills |
350.1 hours | 3.99
The declared body of water receiving this discharge is the "River Derwent"
This station discharged sewage 35 time(s) during 2022.
The station discharged for a total of 350.1 hour(s).
This is around 14 day(s)* or 3.99% 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

90.6 | 816.4 hours
This monitor was operational for 90.6% of the year.
Leaving 816.4 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	Severn Trent Water
Primary Permit #	T/42/46187/R
Secondary Permit #	T/42/46187/R

2021

River Derwent | 60 Spills |
596.8 hours | 6.81
The declared body of water receiving this discharge is the "River Derwent"
This station discharged sewage 60 time(s) during 2021.
The station discharged for a total of 596.8 hour(s).
This is around 24 day(s)* or 6.81% 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

99.5 | 42 hours
This monitor was operational for 99.5% of the year.
Leaving 42 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/42/46187/R
Secondary Permit #	T/42/46187/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

River Derwent at Belper

River Derwent at Milford

River Derwent at Ambergate

River Derwent at Duffield Church and Village Hall

Coppice Brook at Belper

Nearby Stations

Belper

Duffield

Station Data Information

Station overseen (meaning either provided, or regulated) by: The Environment Agency
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