Who We Are

Our Team

Located around the world, we’re leaders, educators, technicians, and engineers who are working together to end the global water crisis.

Thomas Johnston

Chief Executive 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.

Pamela Crane-Hoover

Chief Strategy Officer

Pamela serves as the Chief Strategy Officer 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.

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.

Lisa Mitchell

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.

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.

Megan Theiling Draper

Interim Senior Director, Advancement & Engagement

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). Using her experience at 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.

Eileen Dyer Jarnholt

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.

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

Alyson maintains GWC’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 missions 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 near Denver, Colorado, where they enjoy hiking, backpacking, and camping.

Reuben Kogi

Senior Technical Advisor

Reuben Kogi is the Global Water Center’s senior technical advisor of sustainable water infrastructure. In 2023, he joined GWC as a consultant to facilitate solar-powered water systems courses and offer in-person training in Karnataka, India.

With almost 20 years in the water sector, Kogi is an experienced electro-mechanical engineer. He has been a commercial leader and consultant for global companies in the water sector in multiple countries in Africa and most recently, the Middle East. Additionally, Kogi previously delivered technical training to Water Mission staff. As a subject matter expert in sustainable water solutions, Kogi will be helping GWC in both its learning and technical services. Kogi lives with his wife and three children in Nairobi, Kenya. When he’s not dealing with water, he enjoys cycling, traveling, and serving his local church.

Ronia Wendling

Project Coordinator

Ronia Wendling is the contractual project manager of Global Water Center’s Ghana Water Curriculum. Since graduating with a master's degree in human security in July 2023, she has interned with the United Nations Human Security Unit in program management and worked with International Aid Services on climate adaptation, gaining insight from field implementation in Kenya. With a background in inclusive green development and cross-cultural work, she is filling in during a colleague’s maternity leave to help GWC manage and coordinate the TVET project in Ghana. Ronia currently lives in Denmark. In her free time, she enjoys cooking and baking.

Eric Wei

Carbon Credit Program Director

As President of both United Carbon 4 Safe Water, LLC and Carbon 4 Safe Water, LLC, Eric works closely with GWC to structure carbon financing for safe water projects. Originally from Hong Kong, he is a graduate of Amherst College and received his MBA degree from Wharton. He has had a long career in finance, with 10 years of sell-side experience in investment banking and 25-plus years on the buy-side in private equity. After a brief retirement, he pivoted his career toward impact and climate change investments, spending time at NatureVest, the impact investment arm of The Nature Conservancy, and as NCS lead at Lombard Odier. In his free time, Eric enjoys cooking and trying new foods, all manners of sports including show jumping, and traveling with his family.

Steven Cooke

System Administrator

As the system administrator, Steven Cooke manages GWC’s IT infrastructure. He is passionate about using his IT-related role to serve GWC’s mission of helping people access safe water. Based in Charleston, S.C., Steven received his associate degree from Trident Technical College and his bachelor’s degree in cybersecurity from Charleston Southern University. He previously served as a web developer. In his free time, Steven enjoys climbing and hiking.

Tess Brodie

Technical Services Program Manager

From developing courses and trainings to working on a remote monitoring and management platform for water projects, Tess is driven by a desire to help communities flourish. She has eight years of experience in the WASH sector as a civil engineer and diverse expertise in monitoring, evaluation, and learning and program management—specifically for safe water and community health projects in West and East Africa. She and her husband live in California’s San Francisco Bay area, where she enjoys hiking, going to the beach, and solving jigsaw puzzles.

Anne Lyngdoh

Carbon Credit Program Associate

Anne Lyngdoh is assisting carbon programs within the WASH sector to increase sustainability. Prior to joining GWC, Anne worked on existing and developing carbon projects with a community-based implementing organization in India. With over 10 years of experience in the environmental services sector, her familiarity and prior engagement with carbon standards are invaluable for GWC’s collaboration and support of reducing carbon emissions through safe water projects. Anne and her husband live in New England, where she enjoys hiking and gardening.

Chelsea Inglis

Carbon Credit Program Associate

Chelsea Inglis desires to use her carbon credit certifying experience to support durable and adaptable international water projects. As a Peace Corps Volunteer in Togo, she witnessed the challenges of implementing and maintaining water projects. Then she worked as a carbon project officer focused on carbon standards and markets, community engagement, environmental stewardship, methodologies, and sustainable practices. Chelsea lives in Savannah, Georgia and enjoys going to the beach, paddle boarding, walking, and reading.

Advisors & Associates

Advisors and Associates are subject matter experts in business, development, data analytics, engineering, and the water sector.

Andrew Armstrong

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

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

Sr. Director Of Program Design and Monitoring, Evaluation, and Learning 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.

Katy Ditchfield

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.

Board of Directors

The distinguished leaders on our board supply strategic vision and support as we pursue our mission.

George Greene, lll, PE, PhD

Executive Chair of the Board, Co-Founder of GWC and Water Mission

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.

Charles "Charlie" Young

Rear Admiral (retired), USN, Board Director

A native of South Carolina, Admiral Young graduated from the U.S. Naval Academy and served in the U.S. Navy for 36 years as a submariner and an acquisitional professional. Following his Navy retirement in 2006, Admiral Young worked for Oceaneering’s Advanced Technologies Divisions as the VP for Strategic Business Planning. Charlie is the grandfather of 9 grandchildren, an active member of St Andrews Anglican Church in Mt Pleasant, and he greatly enjoys outdoor activities including golf.

Chapman “Chappy” McKay

Vice President for Sales and Marketing and a partner with Trident Construction

Chapman “Chappy” McKay is the Vice President for Sales and Marketing and a partner with Trident Construction in Charleston, SC. Prior to joining Trident Construction, he served in leadership positions with McDevitt Street Bovis, the South Carolina Department of Commerce, and was an officer with South Carolina National Bank. His background includes project planning, program management, project management, construction, urban renewal, military base redevelopment, project finance, and community service.

George Greene, lV, PE

CEO of Water Mission

George Greene IV, PE is the Chief Executive Officer and President of Water Mission. A licensed professional engineer in South Carolina, Mr. Greene graduated from Clemson University with a bachelor’s degree in chemical engineering. In 2011, he completed Harvard Business School’s Program for Leadership Development followed by a Work Study Program with Water Mission’s Strategic Partner Grundfos at their corporate headquarters in Bjerringbro, Denmark. He is an active member of the American Institute of Chemical Engineers, the American Society of Civil Engineers, St. Andrews Anglican Church, and the C12 Group, a network of Christian executives working together to integrate faith and business.

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.

Steve Vanderboom

Founder and Chairman Emeritus, Pace, Inc.

A South Dakota native, Steve received a BS in Civil Engineering from South Dakota Mines and an MS in Environmental Engineering from the Univ of MN. He founded Pace Analytical in Minneapolis, MN in 1978. Steve served as CEO for 41 years, then as Executive Chairman. Pace is the largest privately held environmental and pharmaceutical testing business in the US with over 80 laboratories and over 4,000 employees. Vanderboom received the Lifetime Achievement Award from the Environmental Business Journal and from the American Council of Independent Laboratories. Steve serves as a Board member of the Global Water Center and is active in his church, YPO, CEO, and numerous philanthropic efforts. Steve and his wife Julie live in Medina, MN in the summer and Naples, FL in the winter.