Assuming Google is accurate and the average American is similar to the average Canadian.
> The average American uses over 100 gallons of water per day
100 gallons/day * 365 days * 3.78 liters/gallon = 137,930 liters
Isn't that just 8 or 9 people's drinking water?
If you disagree with that, work backwards from your answer.
950,000 liters saved divided by 40,000 = 23.75 liters per year? That seems too low.