Impacts of untreated sewage effluent on Tigris river water quality using (NSF-WQI) index. Journal of Genetic and Environment Conservation, [S. l.], v. 10, n. 1, p. 7–13, 2025. DOI: 10.63799/. Disponível em: https://gercj.com/index.php/gercj/article/view/69. Acesso em: 20 nov. 2025.