Which Two ways in which to heavy rain can affect the efficiency of waste water treatment facilities?

Heavy rain can overwhelm wastewater treatment facilities by increasing the volume of inflow, leading to potential overflows and bypassing of treatment processes. Additionally, rain can dilute the concentration of pollutants in the incoming wastewater, making it more challenging to effectively treat and remove contaminants. This can result in untreated or inadequately treated effluent being released into the environment, posing risks to water quality and public health.