Surface water systems or systems using ground water under the direct influence of surface water that are community or nontransient noncommunity water systems, serve 15 or more service connections or serve 25 or more persons, and use conventional filtration treatment shall operate with enhanced coagulation to achieve the total organic carbon (TOC) percent removal levels specified in section 5-1.63 of this Subpart, unless the system meets the alternative compliance criteria described in section 5-1.62 of this Subpart.
N.Y. Comp. Codes R. & Regs. Tit. 10 §§ 5-1.60