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The Ayangue commune in the Santa Elena province, Ecuador, has a water distribution for human consumption but lacks an endowment for agricultural use. This work aims to evaluate alternatives for water use through hydrogeological studies and monitoring the water quality of stabilisation ponds for a water management proposal for agriculture. The study includes: i) hydrogeological analysis of the study area; ii) groundwater study using vertical electrical soundings (VES) and laboratory tests (e.g., permeability and porosity); iii) assessment and influence of pretreated wastewater using physical-chemical analysis of water and fruit quality; and iv) water use strategies in agriculture using Strengths, Weaknesses, Opportunities and Threats (SWOT) analysis. The findings determined five zones with the potential for the extraction of groundwater at depths between 20 m and 30 m, with an approximate volume of the saturated zone of 1175.6 km³ that will allow the water resources supply for irrigation with a proposal for dikes for artificial recharge of aquifers. The analysis of treated wastewater reflects the permissible levels of contaminants that do not contaminate or harm the quality of cultivated fruits. Specifically, the success of the joint use of treated wastewater and groundwater as a sustainable water management model for irrigation is evidenced by proposals for the implementation of surface water storage techniques for aquifer recharge and the installation of tertiary purification systems, such as green filters. [ABSTRACT FROM AUTHOR]