River Mole at Leatherhead 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 - 2021-2023
2475.4 hours | 9.41
The declared body of water receiving this discharge is the "River Mole"
This station has discharged sewage 167 time(s).
The station has discharged for a total of 2475.4 hour(s).
This is 9.41% of the time which we have data for.
In total: 103 day(s)* of elapsed time.
99 | 262.8 hours
This monitor has been operational for 99% of its total time we have data for.
There are 262.8 hours unaccounted for due to downtime of the monitor.
The worst year in our records for the "Leatherhead WWTW" is 2023, discharging sewage for 967.5 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
967.5 hours | 11.04
The declared body of water receiving this discharge is the "River Mole"
This station discharged sewage 61 time(s) during 2023.
The station discharged for a total of 967.5 hour(s).
This is around 40 day(s)* or 11.04% of the year.
The following reasons have been given for the high spill frequency in 2023:
Performance - Asset Configuration (E.G. Ps/Rising Main/Storm Tanks)
The following comments have been given on the station operators intended actions:
Scheduled
98.6 | 116.5 hours
This monitor was operational for 98.6% of the year.
Leaving 116.5 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 # | CTCR.1780 |
| Secondary Permit # | 1780 |
2022
712.2 hours | 8.13
The declared body of water receiving this discharge is the "River Mole"
This station discharged sewage 46 time(s) during 2022.
The station discharged for a total of 712.2 hour(s).
This is around 29 day(s)* or 8.13% of the year.
The following reasons have been given for the high spill frequency in 2022:
Performance - Asset Configuration (E.G. Ps/Rising Main/Storm Tanks)
The following comments have been given on the station operators intended actions:
N/A - Ongoing Investigation
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
| Attribute | Value |
|---|---|
| Governing Body | The Environment Agency |
| Operator | Thames Water |
| Primary Permit # | CTCR.1780 |
| Secondary Permit # | 1780 |
2021
795.7 hours | 9.08
The declared body of water receiving this discharge is the "River Mole"
This station discharged sewage 60 time(s) during 2021.
The station discharged for a total of 795.7 hour(s).
This is around 33 day(s)* or 9.08% 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 - Ongoing Investigation
99 | 87.6 hours
This monitor was operational for 99% of the year.
Leaving 87.6 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 # | CTCR.1780 |
| Secondary Permit # | 1780 |
FloodMapper is not affiliated with this monitoring stations operator(s) or any other entities that may be mentioned on this page.
All trademarks and registered trademarks are the property of their respective owners.
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
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
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
FloodMapper is an independent site and is not associated with any government bodies (e.g. Environment Agency).
Copyright © FloodMapper 2023-2024.
All Rights Reserved