来自大型水监测系统的数据113 对北卡罗来纳州进行了分析，以评估其遵守 三卤甲烷（THM）和卤乙酸（HAA） 第一阶段消毒剂/消毒的监管要求 副产品规则（D/DBPR）以及潜在 未来遵守第2阶段D/DBPR。452 经过分析，只有八组数据超过了第一阶段 总THM的最大污染物水平（MCL），以及 例如，在五个受监管的HAA中，有八个超过了MCL 总体不合规率低于2%。比...更 北卡罗来纳州99.4%的人口接受了这些服务 饮用水系统暴露在含有DBP的水中 浓度低于监管限值。 这项研究为其他州和地区提供了一个模板 检查其管辖区合规性的首要机构 并提供证据证明第一阶段MCL 可在广泛的基础上实现。然而，考试 溴的掺入模式 THM和HAA物种表明，监测 只有HAA5倾向于低估总体HAA发生率 20-25%，这一因素可能是未来的一个关键问题 未来的DPB法规。包括15个参考文献、图表。

Monitoring data from 113 large water systems in North Carolina were analyzed to assess compliance with the trihalomethane (THM) and haloacetic acid (HAA) regulatory requirements of the Stage 1 Disinfectants/Disinfection Byproducts Rule (D/DBPR) as well as potential future compliance with the Stage 2 D/DBPR. Of the 452 sets of data analyzed, only eight exceeded the Stage 1 maximum contaminant level (MCL) for total THMs, and eight exceeded the MCL for the five regulated HAAs, for an overall noncompliance rate below 2%. More than 99.4% of the population served by these North Carolina drinking water systems was exposed to water with DBP concentrations below the regulatory limits. The study provides a template for other states and primacy agencies to examine compliance for their jurisdictions and offers evidence that the Stage 1 MCLs are achievable on a wide-scale basis. However, examination of bromine incorporation patterns among the THM and HAA species suggests that monitoring for only HAA5 tends to underestimate overall HAA occurrence by 20-25%, a factor that may be a key issue in future DPB regulations. Includes 15 references, figures.