Dataset

Economic instruments have been used to promote water conservation and raise funds for financing the water resources system. Thus, the study aims to analyze the evolution of raw water charges in Ceará, as well as to verify the impact of drought on costs and water collection during the period from 2011 to 2019, answering two questions: Does the collection fulfill its function of financing the water resources system? Is the pricing model flexible to absorb the effects of climate variability? We divided the methodology into content analysis and analysis of the costs of operating the system. We observed that, in general, the payment capacity is lower than the water tariff. It was found that the Status Index is negatively correlated with OAM costs. Also, the revenue generated is directed almost entirely towards OAM costs, being insufficient to finance measures, programs, and projects to improve the respective basins. The challenge is to develop a floating tariff related to water scarcity and incorporate the effects of climate variability.

经济手段已被应用于推动水资源节约，并为水资源系统的投融资活动筹集资金。据此，本研究旨在分析塞阿拉州（Ceará）原水费（raw water charges）的演变历程，并验证2011至2019年间干旱对成本与取水量的影响，同时解答两个核心问题：水费征收是否履行了水资源系统的融资职能？定价机制是否具备足够弹性以应对气候变异带来的影响？本研究将方法论框架划分为内容分析法与系统运营成本分析法两类。研究观测结果显示，整体而言用户支付能力低于现行水价水平。研究表明，状态指数（Status Index）与OAM成本呈负相关关系。此外，所产生的营收几乎全部用于支付OAM成本，无法为流域改善所需的各类举措、规划与项目提供充足的融资支持。当前面临的核心挑战在于构建与水资源稀缺性挂钩的浮动水价机制，并将气候变异的影响纳入定价考量范畴。