Analysis of the potability of water from fountains in the Núcleo Velha Marabá, in the Municipality of Marabá, State of Pará, Brazil. Research, Society and Development, [S. l.], v. 14, n. 2, p. e13214248300, 2025. DOI: 10.33448/rsd-v14i2.48300. Disponível em: https://rsdjournal.org/rsd/article/view/48300. Acesso em: 5 dec. 2025.