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River Colne at Bridge St CSO

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 - 2021-2021
River Colne | 57 Spills |
290.3 hours | 3.31


The declared body of water receiving this discharge is the "River Colne"
This station has discharged sewage 57 time(s).
The station has discharged for a total of 290.3 hour(s).
This is 3.31% of the time which we have data for.
In total: 12 day(s)* of elapsed time.

99 | 87.6 hours
This monitor has been operational for 99% of its total time we have data for.
There are 87.6 hours unaccounted for due to downtime of the monitor.


The worst year in our records for the "Bridge St CSO" is 2021, discharging sewage for 290.3 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 - 2021
River Colne | 57 Spills |
290.3 hours | 3.31

The declared body of water receiving this discharge is the "River Colne"
This station discharged sewage 57 time(s) during 2021.
The station discharged for a total of 290.3 hour(s).
This is around 12 day(s)* or 3.31% of the year.

99.8 | 17.5 hours
This monitor was operational for 99.8% of the year.
Leaving 17.5 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
OperatorYorkshire Water
Primary Permit #WRA7456
Secondary Permit #WRA7456 1


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