How much raw sanitary wastewater is typically contributed per person per day?

The typical contribution of raw sanitary wastewater per person per day is approximately 120 gallons. This figure is based on averages from various studies and represents the daily usage of water for various household activities such as bathing, cooking, cleaning, and toilet flushing.

This value is significant as it is a crucial factor in designing wastewater treatment plants, as it helps in estimating the overall flow rates that must be managed. Understanding this average allows professionals to plan adequately for treatment capacity, chemical use, and energy requirements in the treatment process.

While other options may reflect certain localized averages or specific usage scenarios, the 120 gallons per person per day is a widely accepted estimate that aligns well with national averages, ensuring effective infrastructure planning in municipal wastewater systems.