This study explores the compounded hazards of rain-induced landslides and waterborne diseases in Mabini, Batangas, an area particularly vulnerable to extreme weather events, including typhoons and monsoon rains. Given its mountainous terrain, Mabini is at significant risk for both landslides and the outbreak of waterborne diseases like leptospirosis, cholera, and dysentery, which become more prevalent during and after rainfall events. The study investigates the local infrastructure, evaluates disaster riskmanagement (DRM) strategies, and proposes a detailed action plan aimed at improving disaster preparedness, response strategies, and community resilience. Recommendations focus on enhancing slope stabilization, improving flood control, bolstering early warning systems, and strengthening communitybased disaster management (CBDRRM) strategies.