A range of 6.7 to 182 grams (.23 to 6.4 oz) of nitrogen-containing constituents are excreted by one person in 24 hours. Many studies give the average daily output for a healthy adult at 11 grams.

The average northern European adult produces about 40.6 fluid ounces (1.2 liters) of urine and 20.3 fluid ounces (0.6 liters) of feces daily. In one year, the same person produces 155.8 gal (589.77 liters) of urine and 57.9 gal (219.18 l) of feces. Just one person!