Dulais - Headwaters To Confluence With River Neath at Nant-Y-Cafan CSO, Dulais Valley
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
Dulais - Headwaters To Confluence With River Neath | 362 Spills | 3838 hours | 14.6
The declared body of water receiving this discharge is the "Dulais - Headwaters To Confluence With River Neath" This station has discharged sewage 362 time(s). The station has discharged for a total of 3838 hour(s). This is 14.6% of the time which we have data for. In total: 159 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 "Nant-Y-Cafan CSO, Dulais Valley" is 2023, discharging sewage for 1540.5 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
Dulais - Headwaters To Confluence With River Neath | 136 Spills | 1540.5 hours | 17.58 The declared body of water receiving this discharge is the "Dulais - Headwaters To Confluence With River Neath" This station discharged sewage 136 time(s) during 2023. The station discharged for a total of 1540.5 hour(s). This is around 64 day(s)* or 17.58% of the year.
99.8 | 11.3 hours This monitor was operational for 99.8% of the year. Leaving 11.3 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 #
BW2904001
Secondary Permit #
BW2904001
2022
Dulais - Headwaters To Confluence With River Neath | 101 Spills | 919.7 hours | 10.49 The declared body of water receiving this discharge is the "Dulais - Headwaters To Confluence With River Neath" This station discharged sewage 101 time(s) during 2022. The station discharged for a total of 919.7 hour(s). This is around 38 day(s)* or 10.49% of the year.
99.9 | 0.8 hours This monitor was operational for 99.9% of the year. Leaving 0.8 hours unaccounted for in the data.
*This is total time in days, not individual days of the year.
Permit & Governance
Attribute
Value
Governing Body
Natural Resources Wales
Operator
Dwr Cymru Welsh Water
Primary Permit #
BW2904001
Secondary Permit #
BW2904001
2021
Dulais - Headwaters To Confluence With River Ne | 125 Spills | 1377.7 hours | 15.72 The declared body of water receiving this discharge is the "Dulais - Headwaters To Confluence With River Ne" This station discharged sewage 125 time(s) during 2021. The station discharged for a total of 1377.7 hour(s). This is around 57 day(s)* or 15.72% of the year.
99.8 | 14.8 hours This monitor was operational for 99.8% of the year. Leaving 14.8 hours unaccounted for in the data.
*This is total time in days, not individual days of the year.
Permit & Governance
Attribute
Value
Governing Body
Natural Resources Wales
Operator
Dwr Cymru Welsh Water
Primary Permit #
BW2904001
Secondary Permit #
BW2904001
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).