N.Y.C. Admin. Code § 24-331: § 24-331 Sale of water; license.

It shall be unlawful for any person, except when licensed by the commissioner, to take water from any hydrant or water connection erected, or to be erected in the city, and attached to the water pipes, to be used on any boat, vessel, barge or piledriver, or to be sold or offered for sale to the owner of any boat, vessel, barge, or pile-driver.