Excessive volume of urination means that you release abnormally large amounts of urine each day. The medical term for this condition is polyuria. 

An excessive volume of urination for an adult would be at least 2.5 liters of urine per day.

Polyuria is a fairly common symptom, which is often noticed when you have to get up to use the bathroom at night.

• Drinking a large amount of fluids, particularly those containing caffeine or alcohol
• Too much salt or glucose (if you have diabetes)
• Certain medications, especially diuretics
• Diabetes (including diabetes insipidus)
• Psychogenic polydipsia, most common in women over age 30
• Kidney failure
• Sickle cell anemia
• Imaging tests that involve injecting a special dye (contrast media) into your vein -- the amount of urine you produce will increase for up to 24 hours afterwards

You should keep track of the folllowing every day:

• How much you drink
• How often you urinate and how much urine you produce each time
• How much you weigh (use the same scale every day)