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
Henllan Brook | 114 Spills | 107.5 hours | 0.4
The declared body of water receiving this discharge is the "Henllan Brook" This station has discharged sewage 114 time(s). The station has discharged for a total of 107.5 hour(s). This is 0.4% of the time which we have data for. In total: 4 day(s)* of elapsed time.
85.3 | 3854.4 hours This monitor has been operational for 85.3% of its total time we have data for. There are 3854.4 hours unaccounted for due to downtime of the monitor.
The worst year in our records for the "Panton Hall CSO" is 2021, discharging sewage for 41.7 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
Henllan Brook | 35 Spills | 31.2 hours | 0.35 The declared body of water receiving this discharge is the "Henllan Brook" This station discharged sewage 35 time(s) during 2023. The station discharged for a total of 31.2 hour(s). This is around 1 day(s)* or 0.35% of the year.
93.4 | 574.6 hours This monitor was operational for 93.4% of the year. Leaving 574.6 hours unaccounted for in the data.
*This is total time in days, not individual days of the year.
Permit & Governance
Attribute
Value
Governing Body
Natural Resources Wales
Operator
Dwr Cymru Welsh Water
Primary Permit #
CM0172001
Secondary Permit #
CM0172001
2022
Henllan Brook | 42 Spills | 34.5 hours | 0.39 The declared body of water receiving this discharge is the "Henllan Brook" This station discharged sewage 42 time(s) during 2022. The station discharged for a total of 34.5 hour(s). This is around 1 day(s)* or 0.39% of the year.
99.9 | 1.7 hours This monitor was operational for 99.9% of the year. Leaving 1.7 hours unaccounted for in the data.
*This is total time in days, not individual days of the year.
Permit & Governance
Attribute
Value
Governing Body
Natural Resources Wales
Operator
Dwr Cymru Welsh Water
Primary Permit #
CM0172001
Secondary Permit #
CM0172001
2021
Note: Data is potentially unreliable in 2021 Due to high unavailability of the monitor
Clwyd - Un-Named Tributary Below Ystrad | 37 Spills | 41.7 hours | 0.47 The declared body of water receiving this discharge is the "Clwyd - Un-Named Tributary Below Ystrad" This station discharged sewage 37 time(s) during 2021. The station discharged for a total of 41.7 hour(s). This is around 1 day(s)* or 0.47% of the year.
64.1 | 3143 hours This monitor was operational for 64.1% of the year. Leaving 3143 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 2021: Communications Issue, Resolved In August 2021.
*This is total time in days, not individual days of the year.
Permit & Governance
Attribute
Value
Governing Body
Natural Resources Wales
Operator
Dwr Cymru Welsh Water
Primary Permit #
CM0172001
Secondary Permit #
CM0172001
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
Station overseen (meaning either provided, or regulated) by: Natural Resources Wales 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).