Technical Planning for Infiltration Well Siting and Biopore Implementation to Mitigate Seawater Intrusion in Kalibukbuk Village, Lovina, Bali

Seawater intrusion in the coastal aquifer of Lovina, Kalibukbuk Village, Bali, has the potential to reduce groundwater quality and increase the vulnerability of domestic services and tourism-based economic activities. This Community Service Program aimed to develop the technical planning for infiltration-well placement, determine its implementation points, and implement biopores as a participatory groundwater conservation measure. The implementation methods included coordination with the village government and school partners, repeated field surveys to assess land contours and hydrogeological conditions, identification of household wells to obtain an indicative picture of the interface zone (freshwater–saltwater boundary), and preparation of an initial technical design (site criteria, construction requirements, and implementation stages) as the basis for village-scale infiltration-well development. In this program, the PKM team completed the technical planning and determination of infiltration-well locations, while the physical construction was continued by the village community as a follow-up to the program with financial support from PKM funding. A rapid intervention was carried out through the installation of biopores at four priority points in the Pura Banyualit area, accompanied by maintenance socialization and documentation as educational media. Supporting programs, including Eco Smart Bin, composting training, simple water filtration, literacy activities, and health training, were integrated to strengthen pro-environmental behavior and social resilience. The results showed increased community understanding and engagement regarding seawater intrusion issues, the availability of site recommendations that met the technical criteria for infiltration-well construction, and positive acceptance of biopores as a simple and easily replicable technology. This approach provides a technical foundation for further infiltration-well development and initial evidence of biopore implementation for groundwater conservation in coastal areas.