Swansea Bay at Afan Wastewater Treatment Works Settled Storm Overflow
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 - 2021-2023
Swansea Bay | 480 Spills | 5700.7 hours | 21.69
The declared body of water receiving this discharge is the "Swansea Bay" This station has discharged sewage 480 time(s). The station has discharged for a total of 5700.7 hour(s). This is 21.69% of the time which we have data for. In total: 237 day(s)* of elapsed time.
97 | 788.4 hours This monitor has been operational for 97% of its total time we have data for. There are 788.4 hours unaccounted for due to downtime of the monitor.
The worst year in our records for the "Afan Wastewater Treatment Works Settled Storm Overflow" is 2023, discharging sewage for 2866.7 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
Swansea Bay | 204 Spills | 2866.7 hours | 32.72 The declared body of water receiving this discharge is the "Swansea Bay" This station discharged sewage 204 time(s) during 2023. The station discharged for a total of 2866.7 hour(s). This is around 119 day(s)* or 32.72% of the year.
93.6 | 553.6 hours This monitor was operational for 93.6% of the year. Leaving 553.6 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 #
BP0287601
Secondary Permit #
BP0287601
2022
Swansea Bay | 124 Spills | 1424.2 hours | 16.25 The declared body of water receiving this discharge is the "Swansea Bay" This station discharged sewage 124 time(s) during 2022. The station discharged for a total of 1424.2 hour(s). This is around 59 day(s)* or 16.25% of the year.
99.9 | 6.1 hours This monitor was operational for 99.9% of the year. Leaving 6.1 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 #
BP0287601
Secondary Permit #
BP0287601
2021
Swansea Bay | 152 Spills | 1409.7 hours | 16.09 The declared body of water receiving this discharge is the "Swansea Bay" This station discharged sewage 152 time(s) during 2021. The station discharged for a total of 1409.7 hour(s). This is around 58 day(s)* or 16.09% 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
Natural Resources Wales
Operator
Dwr Cymru Welsh Water
Primary Permit #
BP0287601
Secondary Permit #
BP0287601
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