River Basins South West Tamar Plym Meavy Gratton Wastewater Treatment Works
River Basins . . . Meavy Gratton Wastewater Treatment Works
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River Meavy at Gratton Wastewater 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.
Operational Summary - 2021-2023
River Meavy | 468 Spills |
8877.3 hours | 33.77


The declared body of water receiving this discharge is the "River Meavy"
This station has discharged sewage 468 time(s).
The station has discharged for a total of 8877.3 hour(s).
This is 33.77% of the time which we have data for.
In total: 369 day(s)* of elapsed time.

71.6 | 7445.9 hours
This monitor has been operational for 71.6% of its total time we have data for.
There are 7445.99 hours unaccounted for due to downtime of the monitor.


The worst year in our records for the "Gratton Wastewater Treatment Works" is 2022, discharging sewage for 3522.8 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 Meavy | 175 Spills |
3347.5 hours | 38.21

The declared body of water receiving this discharge is the "River Meavy"
This station discharged sewage 175 time(s) during 2023.
The station discharged for a total of 3347.5 hour(s).
This is around 139 day(s)* or 38.21% of the year.

The following reasons have been given for the high spill frequency in 2023:
Performance - Infiltration

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

AttributeValue
Governing BodyThe Environment Agency
OperatorSouth West Water
Primary Permit #302125
Secondary Permit #302125

2022
River Meavy | 173 Spills |
3522.8 hours | 40.21

The declared body of water receiving this discharge is the "River Meavy"
This station discharged sewage 173 time(s) during 2022.
The station discharged for a total of 3522.8 hour(s).
This is around 146 day(s)* or 40.21% 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

15 | 7446 hours
This monitor was operational for 15% of the year.
Leaving 7446 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:
Resolved - Nov


*This is total time in days, not individual days of the year.

Permit & Governance

AttributeValue
Governing BodyThe Environment Agency
OperatorSouth West Water
Primary Permit #302125
Secondary Permit #302125

2021
River Meavy | 120 Spills |
2006.9 hours | 22.91

The declared body of water receiving this discharge is the "River Meavy"
This station discharged sewage 120 time(s) during 2021.
The station discharged for a total of 2006.9 hour(s).
This is around 83 day(s)* or 22.91% of the year.

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

AttributeValue
Governing BodyThe Environment Agency
OperatorSouth West Water
Primary Permit #302125
Secondary Permit #302125


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