N.Y. Comp. Codes R. & Regs. tit. 10, § 757.2
(a) Whenever referred to in this Part, the following definitions shall have the following meanings:
(e) Each chronic renal dialysis center shall ensure that its water treatment and dialysate supply systems protect hemodialysis patients from adverse effects arising from known chemical and microbial contaminates that may be found in water and improperly prepared dialysate. Each chronic renal dialysis center shall develop, implement and comply with policies and procedures related to water treatment, dialysate, and reuse that are understandable and include the following: