Thames Tidal at Crossness 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
670.6 hours | 2.55
The declared body of water receiving this discharge is the "Thames Tidal"
This station has discharged sewage 65 time(s).
The station has discharged for a total of 670.6 hour(s).
This is 2.55% of the time which we have data for.
In total: 27 day(s)* of elapsed time.
78.3 | 5694 hours
This monitor has been operational for 78.3% of its total time we have data for.
There are 5694 hours unaccounted for due to downtime of the monitor.
The worst year in our records for the "Crossness WWTW" is 2021, discharging sewage for 383.9 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
232 hours | 2.64
The declared body of water receiving this discharge is the "Thames Tidal"
This station discharged sewage 24 time(s) during 2023.
The station discharged for a total of 232 hour(s).
This is around 9 day(s)* or 2.64% 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
| Attribute | Value |
|---|---|
| Governing Body | The Environment Agency |
| Operator | Thames Water |
| Primary Permit # | CSSA.0362 |
| Secondary Permit # | 362N |
2022
Note: Data is potentially unreliable in 2022
Due to high unavailability of the monitor
Thames Tidal | 6 Spills | Due to high unavailability of the monitor
54.6 hours | 0.62
The declared body of water receiving this discharge is the "Thames Tidal"
This station discharged sewage 6 time(s) during 2022.
The station discharged for a total of 54.6 hour(s).
This is around 2 day(s)* or 0.62% of the year.
The following reasons have been given for the high spill frequency in 2022:
Data Collection - Edm Non-Representative Location
The following comments have been given on the station operators intended actions:
N/A - Ongoing Investigation
35.3 | 5662.4 hours
This monitor was operational for 35.3% of the year.
Leaving 5662.4 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:
Telemetry Or Data Archiving Failure / Issue
The following description has been given for downtime related actions intended, or taken, by the operator in 2022:
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 | Thames Water |
| Primary Permit # | CSSA.0362 |
| Secondary Permit # | 362N |
2021
383.9 hours | 4.38
The declared body of water receiving this discharge is the "Thames Tidal"
This station discharged sewage 35 time(s) during 2021.
The station discharged for a total of 383.9 hour(s).
This is around 15 day(s)* or 4.38% 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:
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
| Attribute | Value |
|---|---|
| Governing Body | The Environment Agency |
| Operator | Thames Water |
| Primary Permit # | CSSA.0362 |
| Secondary Permit # | 362N |
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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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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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