About Us

Our Story

Born out of Water Mission, a best-in-class water systems implementer founded in 2001, the Global Water Center (GWC) was first conceptualized by George and Molly Greene in 2010 as a way to collaborate with other Water, Sanitation, and Hygiene (WASH) organizations to share best practices in order to accelerate the end of water poverty.

Officially founded in 2020, we are emerging as a strategic leader of “collective action” within the WASH sector. We’re changing the equation of water by leveraging knowledge and relationships to exponentially solve water problems globally.



Our Team

We are the collaborators and impact makers. Meet the team that leads our day-to-day operations.

George Greene, lll, PE, PhD

CEO, Founder

As the Co-Founder and Executive Chair of the Global Water Center, Dr. Greene oversees the strategic direction of the Global Water Center and is actively involved in strategic planning and the day-to-day development of Global Water Center initiatives. In 1981, Dr. Greene founded General Engineering Laboratories, which he led to become one of the largest privately-held environmental laboratories in the United States. After learning about the global water crisis, Dr. Greene and his wife Molly founded Water Mission, a Christian engineering nonprofit which has brought technical excellence to the safe water sector for over twenty years. Dr. Greene is deeply involved in the life of St. Phillips Church in Charleston, SC, and enjoys flying aircraft and spending time with his family.

Thomas Johnston, BS Forestry, JD Law

Chief Operations Officer

TJ draws on the leadership expertise and the relational development skills he has acquired as an environmental lawyer, Anglican Bishop and from a life spent leading nonprofits. TJ’s leadership is focused on supporting organizations that serve those who live on the margins physically, socially, economically and spiritually. As often as possible, you will find TJ enjoying the Lowcountry of South Carolina either on the water or outside with family and friends. There is nothing quite like the ebb and flow of the tides fused with the Lowcountry skies.

Jeff Winkler

Senior Director of Operations,

General Counsel

Jeff serves as the Senior Director of Operations and General Counsel for Global Water Center. Starting first as a volunteer upon the formation of Global Water Center in early 2020, Jeff joined the staff in 2021. With over three decades of experience in business, real estate, contract, and intellectual property law (both privately and in a large corporate environment), he now leads the day-to-day operations of GWC. Jeff received a botany degree from Duke University and focuses his free time on his church’s men’s and backpacking ministries.

Lillian Rudacille

Director of Program Management

Lillian is the Global Water Center’s Director of Program Management. In this role, she provides cross-functional leadership, management, and communications to support operational key performance objectives. Lillian received her Master of Business Administration with a focus on Sustainable Development from Marylhurst University and a Bachelor of Arts in Historic Preservation and Community Planning from the College of Charleston. Lillian has over 18 years of experience focused on program development and project management across disciplines. When she is not flying off a mountain in her hang glider, you may find her paddle boarding with her dogs or swinging a hammer volunteering with Habitat for Humanity.

Benjamin Filskov

Senior Director of Strategic Initiatives and Collective Impact

Benjamin is passionate about serving marginalized people with safe water and brings 10+ years of field experience leading financially sustainable, safe water project implementations for people in rural communities, refugee camps, emergencies, and hospitals in Africa. With his ten-year Grundfos R&D background blended with building partnerships from his time stationed in Tanzania for Water Mission, Benjamin helps merge innovative water technologies with humanitarian and development programs. By catalyzing collaboration on strategic initiatives, Benjamin serves at the Global Water Center in providing safe water to populations in need. With his wife and three children, Benjamin lives in Copenhagen, Denmark.

Eileen Dyer Jarnholt, PhD

Project Manager, Ghana Water Curriculum

Eileen’s background includes a PhD in international development studies with a focus on sustainable development in East Africa. Eileen has experience working with project management, coordination, and grant writing, as well as teaching both at the preparatory school and university level. Her education experience combined with understanding of the non-profit development sector is pivotal in managing the Ghana Water Curriculum Project at Global Water Center. Originally from the Southern United States, Eileen resides in Denmark with her husband and children.

Ed Albin


Ed is the Controller for the Global Water Center. He manages the financial activities, the donor support services and the customer relationship management software, Salesforce. Ed has over 20 years of working for non-profits as a database administrator, QuickBooks accountant, grassroots organizing, and email marketing. He holds a Bachelor of Science Degree in Accounting from Western Governors University. Ed recently moved to the Charleston, SC area and enjoys live sporting events, cooking, reading, hiking, and any time on the beach.

Lisa Mitchell, MES

Senior Director of Learning Services

Lisa joined the Global Water Center in October, 2022. She has over 20 years of progressive experience designing and delivering training and supporting capacity strengthening initiatives in Latin America, Africa, and Asia. She is dedicated to increasing the impact of WASH organizations and helping people reach their potential. In her free time Lisa enjoys swimming, pottery, and spending time in nature with her husband and son. She speaks English & Spanish. Lisa lives in Calgary, Canada.

Pamela Crane-Hoover, MS, PhD

Senior Director of Technical Services

Pamela serves as the Senior Director of Technical Services for the Global Water Center. Pamela has nearly 20 years of experience helping to design, set up, and grow sustainable water, sanitation, and hygiene (WASH) programs, as well as the systems that teams need to manage and support these programs. Her work has ranged from rural programs focused on behavior change to peri-urban micro water utilities focused on using local businesses to provide safe water delivery. She has her MS in Environmental Geology and her PhD in Water Resources from the University of Notre Dame. Pamela lives on the Central Coast of California with her husband, Ben, and two young boys where they love hiking, sharing meals with friends, and relaxing by the ocean while their boys dig holes and build sandcastles.

Heidi Fuller

Director of Curriculum Design

As Director of Curriculum Design, Heidi leads curriculum design and instructor training with the Technical and Vocational Education and Training (TVET) institutes throughout Africa and Asia, as well as GWCs growing list of technical training courses. She became passionate about improving access to safe water when she experienced the dangers of contaminated water while biking through India and Southeast Asia in the early 2000s. After spending three years as a high school science teacher, Heidi transitioned 15 years ago into the nonprofit sector to design and deliver technical water-based programs. She currently resides north of Toronto, Canada, with her two children. She enjoys spending time outdoors and participating in adventurous activities, such as skiing, mountain biking, climbing, hiking, and camping.

Alyson Rockhold

Director of Global Engagement

As the Director of Global Engagement, Alyson maintains Global Water Center’s communications and builds relationships with key stakeholders. Through powerful content and personal connections, Alyson aims to welcome many more people into GWC's mission to solve the water crisis. During the first 10 years of her career, Alyson used her Master's in Public Health and Master's in Medical Science to serve with mission agencies in Haiti, Tanzania, and Zambia. While fundraising for that work, Alyson developed a passion for helping nonprofits share their stories and pivoted her career into communications. Alyson lives with her husband, Brian, near Denver, Colorado, where they enjoy hiking, backpacking, and camping.

Advisors & Associates

Advisors and Associates are essential to the Global Water Center’s collective impact. Advisors are subject matter experts in business, development, data analytics, engineering, and the WASH sector. Our Advisors and Associates also share our mission and values to scale capacity and impact through the professionalization of the WASH sector.

Andrew Armstrong, PE, PhD

Global Lead, Data Integrity at Uptime Global

Andrew oversees data verification and validation at Uptime Global. He also coordinates technical assistance activities with partners to enhance data integrity. Previously, Andrew spent a decade working for Water Mission, where he led a global advisory team responsible for sustainable service delivery, behavior change communication, and monitoring, evaluation, and learning. He has also led the development and delivery of technical training programs for rural water professionals at the Global Water Center. He holds a MSc in Environmental Engineering and a graduate certificate in global health from the Water Institute at the University of North Carolina at Chapel Hill, a BSc in Mechanical Engineering from Clemson University, and is a professionally licensed environmental engineer in the United States. Recently, Andrew earned his PhD in Geography and the Environment from the University of Oxford, where his research examines the drivers for revenue generation from user payments for rural piped water services.

Lona Robertson, MEd, EdD

Senior Learning Advisor

With extensive expertise in applied instructional design in the water, sanitation, and hygiene (WaSH) sector and higher education, Dr. Robertson officially joined Global Water Center as a Senior Learning Advisor in 2023. Previously, she worked for the Centre for Affordable Water and Sanitation Technologies (CAWST) where she collaborated with GWC on the design and development of two online solar-powered water systems courses. Dr. Robertson’s educational background includes a doctorate in Instructional Systems Technology from Indiana University and a master’s degree in Distance Education from Athabasca University. Now in semi-retirement, Dr. Robertson continues to pursue her passion for WaSH capacity development by working remotely from her cabin in British Columbia where she enjoys hiking, golfing, painting, and spending quality time with family and friends.

Lara Lambert

Director of Program Development at Water Mission

Originally from South Africa, Lara serves as the Sr. Director of Program Development for Water Mission, leading a team of subject matter experts in WASH service delivery models, financing, behavior change communication strategies, and monitoring, evaluation, research, and learning. With 10+ years of professional experience within the WASH sector, Lara has provided both technical and program support in Sub-Saharan Africa, Southeast Asia, Latin America, and the Caribbean. Lara holds a master’s degree in both Higher Education and community-based Conflict Resolution and Reconciliation.

Tom Duong

Software Product Manager at Assetas

Tom is the co-founder of Assetas, a technology company, and has over 25 years of experience in the energy sector. His main interest is using technology to tackle grand challenges, such as pollution management. He’s proud to have stumbled into the ‘safe water’ sector and is looking to contribute.

Katy Ditchfiled

Human Resources Advisor

Katy has nearly 15 years of experience in building culture and growing companies strategically. She is passionate about cultivating successful and positive partnerships with our team, while developing and integrating effective programs in human resources strategy, workforce planning, employee relations, compliance, benefits, and risk management. A graduate of the University of Georgia, Katy has worked in the insurance, healthcare, and software industries serving on various boards including Associated Builders and Contractors, National Association of Women in Construction, Trident United Way, and Palmetto Society for Human Resource Management. Katy lives with her husband and two young boys in Mount Pleasant, SC, where they love seeking out new adventures and creating memories together.

Megan Theiling Draper

Advancement + Global Engagement Advisor

Megan is a strategic and innovative thought leader, relationship builder, problem solver and certified fundraising professional. She has two decades of success managing comprehensive advancement programs and is a Certified Fund Raising Executive (CFRE) as well as a member of the Association of Fundraising Professionals (AFP). Her company, Philanthropē Reimagined, strategically encourages, equips and excites organizations for generational impact. Megan is passionate about helping good people do good things. She lives with her husband and two children in Mount Pleasant, South Carolina.