Rudimentary septic systems and shallow well contamination: A study in the Brazilian Semi-Arid region. Research, Society and Development, [S. l.], v. 14, n. 1, p. e8114148101, 2025. DOI: 10.33448/rsd-v14i1.48101. Disponível em: https://ojs34.rsdjournal.org/index.php/rsd/article/view/48101. Acesso em: 28 jun. 2025.