Juan Luis Vilorio
Operations Director
Juan Luis began serving with Water at Work Ministry in 2013 and has led operations in the Dominican Republic since 2015. With more than a decade of leadership experience, he oversees the management of our multi-disciplinary plant support team in the DR, leading strategic initiatives, and managing local partnerships. .
Juan Luis has been vital to expanding our impact by strengthening operational systems and striving to ensure the long-term sustainability of our work. He bridges the gap between vision and execution, providing leadership that enables communities to maintain consistent access to safe, clean water.
A passionate leader, Juan Luis is driven by a deep commitment to serving others and his Christian faith is the foundation of his leadership and continues to inspire his dedication to improving lives through sustainable access to clean water and meaningful community development.
Dominican Team
Mariela Donaida Pérez Gonzalez de Melo
Operations Manager
Mariela helps ensure Water at Work Ministry runs efficiently across the Dominican Republic. She oversees day-to-day operations, coordinates field activities, and equips water plant teams with the training and support needed to serve their communities.
With a background in education, she has a passion for developing people. She plays a key role in training and mentoring water plant leaders, helping them build the skills and confidence to effectively operate sustainable, community-based water enterprises.
Mariela is deeply committed to serving others and is grateful for the opportunity to help provide both safe drinking water and the hope of the Living Water to communities throughout the Dominican Republic.
Rosmery Vilorio Marmolejos
Community Development Coordinator
Water changes lives, but stories inspire people to become part of that transformation. Rosmery helps connect people to Water at Work’s mission by building meaningful relationships with communities, donors, churches, partners, and volunteers. Through community engagement, strategic communications, and storytelling, she shares the impact of safe water and helps others see how they can make a lasting difference.
As a licensed dentist, Rosmery also leads Water at Work’s oral health initiatives, coordinating dental outreach clinics that provide preventive care, education, and compassionate service in underserved communities. She also supports the marketing and growth of community water plants, helping strengthen their sustainability while expanding awareness of the ministry’s work.
Whether serving in a community, creating meaningful content, or welcoming visitors to experience the ministry firsthand, Rosmery is passionate about helping people connect with Water at Work’s mission and become part of the life-changing work God is doing through clean water and the hope of the Living Water.
Modesto "Chinito"
Adalberto Melo Peña
Compliance and Systems Coordinator
Chinito plays a critical role in ensuring that every Water at Work plant operates with excellence, consistency, and accountability. He oversees water quality standards, monitors system performance, and helps ensure that every gallon of water produced meets the requirements established by the Dominican Republic’s Ministry of Public Health.
Known for his attention to detail and commitment to excellence, Chinito works closely with water plant teams to strengthen operational systems, maintain compliance, troubleshoot technical challenges, and continuously improve the quality and reliability of water production. His work helps ensure that families receive safe, dependable drinking water every day.
Chinito’s dedication and hands-on support make him an essential part of Water at Work’s mission to provide safe drinking water to communities across the Dominican Republic.
Jam Rafael Nivar Adamez
Administration Manager and Operations Coordinator
Jam plays a vital role in strengthening Water at Work Ministry by supporting nearly every area of the organization's operations. Jam oversees financial operations, procurement, logistics, and administrative processes withe helping ensure that projects and water plants have the resources they need to thrive.
Beyond his operational responsibilities, Jam works closely with water plant leaders to develop strategies that promote growth, financial sustainability, and long-term success. Whether improving operational systems, supporting new initiatives, or helping solve day-to-day challenges, he is always looking for ways to strengthen the ministry and increase its impact.
With a background in business administration, Jam combines strategic thinking with a servant’s heart. He also uses photography and drone videography to capture stories that connect donors and partners with the life-changing work taking place in the communities Water at Work serves.