Tasca Fabiane Andressa, Finotti Alexandra Rodrigues, Goerl Roberto Fabris
Dept. of Environmental Engineering, Federal University of Santa Catarina, Delfino Conti Street, s/n - Trindade, 88040-900 Florianópolis City, SC, Brazil E-mail:
Dept. of Geosciences, Federal University of Santa Catarina, Delfino Conti Street, s/n - Trindade, 88040-900, Florianópolis City, SC, Brazil.
Water Sci Technol. 2019 Jan;79(2):278-290. doi: 10.2166/wst.2019.043.
In this paper, a stormwater fee specifically for small municipalities was developed through a simplification of the Equivalent Residential Unit (ERU) system, which is the main method applied in the United States. The Simplified ERU is based on the amount of impervious area and the fee considers the operations and maintenance costs, besides having a single class of billing. It was applied in Santo Amaro da Imperatriz city, located in the southern region of Brazil, which can be classified as a small city. The value of the Simplified ERU (294.32 m) was similar to the average impervious area in the United States (269.42 m) and it was equivalent to $0.28 per square meter (within the range of other countries' fees). The method proved to be a feasible and rapid technique for funding stormwater services, and its simplicity allows its application in different locations. This funding model can generate revenue to address current stormwater problems, such as the lack of funding for existing drainage infrastructure, and contribute to downstream flooding reduction. This paper also intends to encourage discussion about the methods for designing a stormwater fee in the academic community, which is still incipient.
本文通过简化等效住宅单元（ERU）系统，开发了一种专门针对小城市的雨水排放费，该系统是美国采用的主要方法。简化后的ERU基于不透水面积，该费用除了采用单一计费类别外，还考虑了运营和维护成本。它应用于位于巴西南部地区的圣阿马罗·达因佩拉特里斯市，该市可归类为小城市。简化后的ERU值（294.32平方米）与美国的平均不透水面积（269.42平方米）相似，相当于每平方米0.28美元（在其他国家的费用范围内）。该方法被证明是一种为雨水排放服务筹集资金的可行且快速的技术，其简单性使其能够在不同地点应用。这种融资模式可以产生收入，以解决当前的雨水排放问题，如现有排水基础设施资金不足，并有助于减少下游洪水。本文还旨在鼓励学术界对雨水排放费设计方法进行讨论，目前这方面仍处于起步阶段。
