The amount of urine produced depends on the following:
(i) Amount of water ingested. If large amount of water is ingested regularly large amounts of dillute urine will be produced. In case sufficient water is not ingested urine produced will be less in amount but will have high concentration of nitrogenous wastes and this is harmful for the excretory system and the body.
(ii) Amount of waste produced in the body decides how much urine is to be excreted.
(iii) The release of some hormones also regulate the amount of urine produced.