A systems analysis of micropollutant risks in municipal wastewater treatment in the context of the EU 2022 UWWTD update proposals: PRESENTATION ONLY

Stephen Palmer, Technical Director, Stantec, UK


Regulatory Context

  • Original 2023 REUL list of regulation for revocation updated: WRD, UWWTD, Bathing Waters, Sludge Directive now all taken off revocation list
  • However: UWWTD updated by EU in 2022: all WwTW >100,000PE to provide quaternary treatment for micropollutant removal by 2035
  • Currently unclear how devolved Gov’ts of UK will converge or diverge from EU 2022 update with respect to micropollutants and to what degree.
  • BUT: OFWAT Asset Investment Strategy Guidance (April 2022)
  • 25 year horizon and no regret scenario requirement implies a need to consider what may be the biggest driver of increased treatment capability over next 25 years
  • Systems analysis: Biggest driver of increased treatment increase in treatment capability over next 25 years is micropollutants

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