Directs the Director of the Division of Water Resources to require public water systems that supply water to one or more other public water systems and obtain all or part of their water from surface water sources to conduct sampling and analysis for applicable disinfection byproducts at or near all points of delivery to consecutive systems and to provide the consecutive system with the sampling results. Directs consecutive systems providing water to other consecutive systems to conduct sampling and analysis for applicable disinfection byproducts at or near all points of delivery to those other consecutive systems and to provide the other consecutive systems with the sampling results. Requires the supplying water system and any consecutive water systems to complete a joint operations evaluation signed by a responsible official for each water system participating in the evaluation if sampling results exceed the MCL (maximum contaminant level) for any applicable disinfection byproduct. Further, requires representatives from all participating water systems to meet at least quarterly to evaluate the effectiveness of measures implemented based on the operation evaluation until all water systems have met the MCL for all applicable disinfection byproducts for four consecutive quarters. Defines applicable disinfection byproducts as TTHMSs (Total Trihalomethanes) and HAA5 (Haloacetic Acids), as those terms are more particularly defined in the Stage 2 Disinfection Byproducts Rule issued by the EPA ( 71 FR 338, January 4, 2006). Expires on the date that the rules required to be adopted by this act, as described below, become effective. 

Directs the Environmental Management Commission (Commission) to adopt rules to amend 15 NCAC 18C .1502 (Monitoring of Consecutive Public Water Systems) consistent with and substantively identical to the above provisions. These rules are not subject to Part 3 of Article 2A of GS Chapter 150B, and will become effective as provided in GS 150B-21.3(b1) as though 10 or more written objections had been received as provided in GS 150B-21.3(b2). Directs the Commission and the Department of Environmental Quality to implement 15A NCAC 18C .1502, as provided in this act, on the effective date of the revised permanent rule the Commission is required to adopt.