Wastewater Wales 2022-01-01 to 2023-03-31

Measurements of SARS-CoV-2 (gc/l), Ammonia (mg/l), Conductivity (ms/cm), Orthophosphare (mg/l) and Flow (l/day) taken at 43 wastewater treatment plants in Wales over the period 2022-01-01 to 2023-03-31. Also included are estimates of Combined Sewer Overflow activity (on a scale of 0 to 1) and estimates of Flow accounting for dilution. Details of the estimation process are given in O.D. Jones, A.J. Baldwin, I. Durance, W.B. Perry and A. Weightman, Estimating Wastewater Dilution Using Chemical Markers and Incomplete Flow Measurements: Application to Normalisation of SARS-CoV-2 Measurements, 2026 (under review). Collected as part of the Welsh Government Wastewater Monitoring Programme (C035/2021/2022). https://www.gov.wales/wastewater-monitoring-reports-coronavirus.