What is 1 MGD in cubic feet per second?

To convert million gallons per day (MGD) to cubic feet per second (ft³/sec), it is important to understand the relationship between these units. One million gallons is equal to approximately 3,785.41 liters, and there are about 7.48 gallons in one cubic foot. This means that:

1 MGD = 1,000,000 gallons/day
= 1,000,000 gallons/day × (1 ft³ / 7.48 gallons)

= 133,680.55 ft³/day

Since there are 86,400 seconds in a day, we can convert this flow rate to cubic feet per second by dividing by the number of seconds in a day:

133,680.55 ft³/day ÷ 86,400 seconds/day ≈ 1.55 ft³/sec

This calculation shows that 1 MGD is equivalent to approximately 1.55 cubic feet per second, making that the correct answer. Understanding these conversions is essential for mechanical technologists working in water and wastewater treatment, as flow rates are vital for system design and operation.