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 Thames | 22 Spills | 334.4 hours | 1.27
The declared body of water receiving this discharge is the "River Thames" This station has discharged sewage 22 time(s). The station has discharged for a total of 334.4 hour(s). This is 1.27% of the time which we have data for. In total: 13 day(s)* of elapsed time.
98.3 | 438 hours This monitor has been operational for 98.3% of its total time we have data for. There are 438 hours unaccounted for due to downtime of the monitor.
The worst year in our records for the "Hambledon Sewage Treatment Works" is 2023, discharging sewage for 334 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 Thames | 20 Spills | 334 hours | 3.81 The declared body of water receiving this discharge is the "River Thames" This station discharged sewage 20 time(s) during 2023. The station discharged for a total of 334 hour(s). This is around 13 day(s)* or 3.81% of the year.
99.9 | 2.6 hours This monitor was operational for 99.9% of the year. Leaving 2.6 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 #
CAWM.0192
Secondary Permit #
W/WR193
2022
River Thames | 0 Spills | 0 hours | 0 The declared body of water receiving this discharge is the "River Thames" This station discharged sewage 0 time(s) during 2022. The station discharged for a total of 0 hour(s). This is around 0 day(s)* or 0% 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 #
CAWM.0193
Secondary Permit #
W/WR193
2021
River Thames | 2 Spills | 0.4 hours | 0 The declared body of water receiving this discharge is the "River Thames" This station discharged sewage 2 time(s) during 2021. The station discharged for a total of 0.4 hour(s). This is around 0 day(s)* or 0% of the year.
96.4 | 311.8 hours This monitor was operational for 96.4% of the year. Leaving 311.8 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 #
CAWM.0193
Secondary Permit #
W/WR193
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Local Information
Nearby Flood Warnings
None
Nearby Alert Areas
River Thames for Henley, Remenham, and Medmenham
River Thames from Mapledurham to Sonning
River Thames for Shiplake, Lower Shiplake and Wargrave
River Thames at Hurley and Harleyford
Properties closest to the River Thames from All Saints Church, Bisham to Little Marlow
River Thames at Bisham village and Marlow town
River Thames in the Playhatch, Sonning and Sonning Eye area
River Thames for Henley, Remenham, Medmenham and its tributaries
Groundwater flooding in the Henley and Assendon area
River Thames for Shiplake, Lower Shiplake and Wargrave
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