Hydrogeological connectivity and microbiological contamination by Escherichia coli: A GIS application in the Santa Marta Micro-Watershed, Tarrazú, Costa Rica. UNED Res. J. [Internet]. 2026 Apr. 6 [cited 2026 Jul. 30];18(1):e6179. Available from: https://revistas.uned.ac.cr/index.php/cuadernos/article/view/6179