N.Y. PBS Law § 89-I

§ 89-i. Complaints as to price of water; investigation by commission;\nforms of complaints. Upon the complaint in writing of the mayor of a\ncity, the trustees of a village or the town board of a town in which a\nperson or corporation is authorized to supply or distribute water for\ndomestic, commercial or public uses, or upon the complaint in writing of\nnot less than twenty-five customers or purchasers of such water in such\nmunicipality or upon complaint of a water-works corporation supplying\nsuch water, as to the rates, charges or classifications of service for\nwater sold and delivered in such municipality, or upon the complaint in\nwriting of the department of state, or as to the methods employed in\nfurnishing such service, the commission shall investigate as to the\ncause of such complaint. When such complaint is made, the commission\nmay, by its agents, examiners and inspectors, inspect the works, system,\nplant, devices, appliances and methods used by such water-works\ncorporation in supplying and distributing such water, and may examine or\ncause to be examined the books and papers of such water-works\ncorporation pertaining to the supplying and distributing of such water.\nThe form and contents of complaints made as provided in this section\nshall be prescribed by the commission. Such complaints shall be signed\nby the officers, or by the customers, purchasers or subscribers making\nthem, who must add to their signatures their places of residence, by\nstreet and number, if any.\n