Zeolite is an abundant porous mineral found on the Earth's surface in Ecuador due to volcanic activity in the soil. Natural mordenite (Z.A.) can be used as an adsorption agent in wastewater and groundwater containing hardness, composed of dissolved salts that increase conductivity as well as total dissolved solids (TDS). This study demonstrates its effectiveness in improving water quality for general use and potentially for consumption in groundwater from a facility located in the Milagro Canton, Guayas Province. Three unfiltered well-water samples from the facility and five samples filtered through a previously constructed aquarium-type filter were analyzed. The samples were tested for pH, conductivity, hardness, fecal coliforms, and initial TDS levels for comparison purposes. The results showed that the unfiltered samples had hardness levels of 340 mg/L, 355 mg/L, and 360 mg/L, respectively, with a maximum conductivity of 780 µS/cm. In contrast, the filtered samples exhibited a significant reduction, reaching a maximum hardness of 240 mg/L and a conductivity of 653 µS/cm, representing an average efficiency of 29%.