Saneamento básico no Paraná: análise da eficiência das unidades da Sanepar nos anos de 2007 e 2022

Abstract

Water is a finite natural resource and a public good essential for life and for health. The water supply chain and sewage treatment are components of basic sanitation, which aim is to assure inhabitants the access to potable water as well as to the adequate collection and treatment of waste, in order to preserve the environment. The advent of the National Basic Sanitation Law unleashed necessary changes in services of water supply and sewage treatment. This paper analyses the efficiency of the services provided by the Paraná Sanitation Company (Sanepar) in the years 2007 and 2022. The used databases were the National Basic Sanitation Information System (SNIS), the Paraná Sanitation Company (Sanepar) and the census conducted by the Brazilian Institute of Geography and Statistics (IBGE) during the observed years, applying the technique of Data Envelopment Analysis (DEA) and the Malmquist index. The study details the results referring to the outputs of the built model and the advances in efficiency along the compared years, making the services beyond universal, more efficient. It was observed that in the period there was a decrease in productivity and a change in technological efficiency. Even though, an increase in the average efficiency between the analyzed periods was noted. The decrease in productivity shows that the combination of inputs and outputs resulted in a lower relative production.