华盛顿州西雅图大都会区采用的创新费率概念解决了以下问题:城市和郊区客户之间应如何分摊供水系统成本，谁应为郊区增长支付费用，以及应使用何种方法计算批发供应商所需的收入。西雅图水务部与郊区批发供应商签订的合同包括新旧设施的成本分配、需求计量，以及供应“旧水”和满足郊区增长产生的需求所需的额外“新水”的单独费率。包括8个参考文献、表格、图表。

The innovative rate concepts applied in the Seattle, Washington metropolitan area address the questions of how water systems costs should be split between city and suburban customers, who should pay for suburban growth, and what methods should be used to compute revenues required from wholesale purveyors. Seattle Water Department contracts with suburban wholesale purveyors include allocation of the costs of both old and new facilities, demand metering, and separate rates for supplying "old water" and the additional "new water" needed to meet the demand created by suburban growth. Includes 8 references, tables, figures.