作者研究了倒置（递增区块）费率结构作为加强亚利桑那州图森市现有节水项目的一种手段的有效性。分析了九年期间单户住宅用户的使用模式，重点是反向水价。研究结果表明，在过去十年中，图森市使用这些以保护为导向的用水率显著帮助减少了单个家庭的用水。包括9个参考文献、表格、图表。

The author examines the effectiveness of an inverted (increasingblock) rate structure as a means of enhancing an existing water conservation program in Tucson, Arizona. Use patterns of single-family residential customers during a nine-year period are analyzed, with a focus on inverted water rates. The results suggest that the use of these conservation-oriented rates in Tucson has significantly helped to reduce single-family water use during the past decade. Includes 9 references, tables, figures.