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Taxing for stormwater drainage systems.
N Nascimento1, V Cançado, J R Cabral
1Department of Hydraulics and Water Resources Engineering, Federal University of Minas Gerais, Av. Contorno, 842, 30110-060 Belo Horizonte, Minas Gerais, Brazil. niloon@ehr.ufmg.br
Summary
This study explores implementing a tax for urban drainage systems to achieve self-financing. Results show that source control and preserving natural creeks offer cost-effective solutions with lower user burdens.
Area of Science:
- Environmental Engineering
- Urban Planning
- Public Finance
Background:
- Urban drainage systems face challenges in self-financing.
- Increasing urbanization necessitates sustainable infrastructure funding models.
- Conventional drainage requires significant investment and maintenance costs.
Purpose of the Study:
- To evaluate the feasibility of a self-financing tax for urban drainage.
- To compare the costs of conventional drainage with source control alternatives.
- To determine factors influencing the tax burden on urban areas.
Main Methods:
- Analysis of average implementation and maintenance costs for drainage services.
- Evaluation of conventional drainage systems.
- Assessment of source control methods, specifically on-lot water detention.
- Modeling tax charges based on impermeable surface area and urban density.
Main Results:
- A tax structure can be defined to individualize charges based on service costs.
- Taxable values vary with impermeable surface area and urban density.
- Source control approaches, including on-lot detention, present viable alternatives.
- Preserving natural creeks is identified as a cost-effective strategy.
Conclusions:
- Urban drainage can be made self-financing through a well-defined tax system.
- Source control and natural creek preservation offer lower investment and user burden.
- Policy implications favor decentralized, nature-based solutions for sustainable urban water management.