Public urination is primarily regulated by littering ordinances, with special regulations for parks and transit.
PUBLIC URINATION (GENERALLY) (called “Littering Prohibited”) – NYC Sanitation Code §16-118 (this is a violation):
Behavior that is not allowed:
6) causing / allowing filthy liquid or matter to fall on the streets
PUBLIC URINATION (GENERALLY) (called “Throwing or dropping offensive matter into streets… prohibited”) – NYC Health Code §153.09 (this is a misdemeanor):
Behavior that is not allowed:
Throwing or putting any offensive liquid or substance onto city streets or sewers
Part of "Prohibited Uses" of parks -- Parks Department Regulations §1-04 (this can be a violation or misdemeanor)
Behavior that is not allowed:
k) public urination or defecation in parks
Part of “Disorderly Conduct” in transit facilities - Transit Authority Rule 1050.7 (this is a violation):
Behavior that is not allowed:
a) creating “unsanitary conditions” in transit facilities (urinating in places other than toilets)