In the period we have records for, 2021-2023, sewage has been discharged in, or near (~3mi.), Derwydd 1621 time(s). Sewage has been discharged for a total of 21458.7 hour(s). In total: 2.44 year(s)* of elapsed time.
85.8 The stations, on average, have been monitoring for 85.8% of the total time we have data for.
Discharge Volume by Year
Hours and Spills by Year
Uptime Yearly Summary (Average)
Summary of Bodies Receiving Discharge
Tywi (Llandovery Bran To Cothi Confl) Marlais - Headwaters To Confluence With Loughor Marlas - Headwaters To Confluence With Loughor Tywi (Llandovery Bran To Cothi Confl) Tywi - Conf With Llandovery Bran To Conf With Cothi.
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Derwydd - Yearly Summary
Summary for Year 2023
569 Spills | 7753 hours
In 2023, sewage was discharged in, or near (~3mi.), Derwydd 569 time(s). Sewage was discharged for a total of 7753 hour(s). In total: 0.88 year(s)* of elapsed time.
80.6 The stations, on average, have been monitoring for 80.6% of the total time in 2023. Stations with missing data have been excluded from this calculation.
A single station may appear twice when there are multiple individual outlets in the top 3.
Summary for Year 2022
535 Spills | 6956 hours
In 2022, sewage was discharged in, or near (~3mi.), Derwydd 535 time(s). Sewage was discharged for a total of 6956 hour(s). In total: 0.79 year(s)* of elapsed time.
83 The stations, on average, have been monitoring for 83% of the total time in 2022. Stations with missing data have been excluded from this calculation.
A single station may appear twice when there are multiple individual outlets in the top 3.
Summary for Year 2021
517 Spills | 6749.7 hours
In 2021, sewage was discharged in, or near (~3mi.), Derwydd 517 time(s). Sewage was discharged for a total of 6749.7 hour(s). In total: 0.77 year(s)* of elapsed time.
93.7 The stations, on average, have been monitoring for 93.7% of the total time in 2021. Stations with missing data have been excluded from this calculation.