It Isn't Cut and Dry: General Considerations in the Development of Wet Weather Flow Improvement Scenarios for Wastewater Treatment Facilities

In recent years, municipal utilities have been facing the need to provide significant improvements on how they manage wet weather related flows in their wastewater treatment facilities as the result of increased regulatory and public pressures. This paper argues for new perspectives in regulatory approaches and how our industry defines improvement scenarios (i.e. establishing basis of design conditions and configuring treatment process configurations) to address wet weather flow treatment requirements, and proposes alternative means for dealing with the many factors that will end up influencing the evaluation process of improvement scenarios.