两阶段复合校正计划（CCP）可以帮助水处理厂在不产生重大资本支出的情况下优化工厂性能，从而遵守地表水处理规则。第一阶段，综合绩效评估（CPE），是一个全面的分析，确定绩效限制因素。第二阶段是全面技术援助（CTA），如果CPE表明性能可以改进，则实施该阶段。本文描述了一个在36家中小企业实施CCP的项目- 小型公用事业；只有两个运行良好，其中几个被认为是对公共卫生的威胁。资源不足并没有显著限制小型水厂的性能；相反，主要问题在于操作。减少流量和增加运行时间被认为是每天运行不到24小时的电厂的一种切实可行的替代方案。此外，如果保持整个过程的完整性，超过优化多重屏障保护的设计标准是合理的。 建立适当的费率结构，并激励工人追求优质水作为处理目标，可以克服资源障碍。在四家工厂进行CTA后，以每家工厂不到10000美元的资本成本实现了成品水浊度要求。为了实现最大效益，CCP应与现有的国家饮用水项目相结合。包括11个参考文献、表格、图表。

The two-phase composite correction program (CCP) can help water treatment plants comply with the Surface Water Treatment Rule by optimizing plant performance without making major capital expenditures. The first phase, the comprehensive performance evaluation (CPE), is a thorough analysis that identifies performance-limiting factors. The second phase, comprehensive technical assistance (CTA), is implemented if the CPE indicates performance can be improved. This article describes a program in which a CCP was implemented at 36 small and medium-sized utilities; only 2 were operating optimally, and several were considered threats to public health. Insufficient resources did not significantly limit performance of small water plants; instead, the primary problems were operational. Decreasing flows and increasing operating time were judged to be a practical alternative for plants operating less than 24 hours a day. In addition, exceeding a design standard to optimize multiple-barrier protection was found justifiable if the integrity of the overall process is maintained. Establishing adequate rate structures and motivating workers to pursue high-quality water as a treatment objective can overcome perceived resource barriers. After CTAs at four plants, finished-water turbidity requirements were achieved at a capital cost of less than $10,000 per plant. To achieve the maximum benefit, the CCP should be integrated with the existing state drinking water program. Includes 11 references, tables, figures.