Our Leadership Team


Pauli Undesser, MWS, CAE
Executive Director

Pauli Undesser brings a vast knowledge of water treatment technologies, standards, codes and regulations, along with high-level project management skills, to her role at WQA.

Prior to accepting the role of WQA Executive Director, she served as WQA's Director of Regulatory and Technical Affairs and Water Quality Research Foundation Executive Director. Under Pauli's leadership, WQA successfully coordinated a coalition to re-write and simplify industry product certification laws in California, launched an unprecedented capital campaign for its foundation and developed an internal toxicology program.

Pauli holds a bachelor’s degree in Chemistry from the University of Illinois at Urbana-Champaign, a master’s degree in Biochemistry from Northern Illinois University, and is also a Certified Association Executive (CAE).

Tom Bruursema, MS
Associate Executive Director of Member & Public Engagement

Tom Bruursema has a rich background in the water treatment industry and in marketing and business operations.

Previously, he spent 30 years at NSF International, where for a time he was General Manager of Drinking Water Treatment Units and Environmental and Research Services. He holds a Master of Science degree in Biology from Eastern Michigan University.

Bruursema will contribute to the overall administration, leadership and cross-functional strategy execution for WQA’s membership, meeting services, marketing and communications and government affairs departments.

Jonathan Adams
Director of Information Technology

Jonathan Adams has been leading WQA's IT department since 2015. In his role as Director of Information Technology, he oversees the streamlined operation of the IT department and ensures alignment with the business objectives of the Association. Jonathan has over 10 years of experience and expertise in several areas of technology, including systems administration, networking, security, web development, and solutions delivery. Prior to joining WQA, Jonathan served as the Associate Director of IT for VML. Jonathan holds a Bachelors Degree in Management Information Systems from Eastern Illinois University and a MBA from the University of Illinois at Urbana-Champaign.

Wesley Bleed
Membership, Marketing & Communications Director

Wesley Bleed brings extensive media and public relations experience to WQA's Membership, Marketing & Communications Department. As News Director and broadcast journalist for award-winning WGN Radio, Communications Director for a statewide campaign for governor and Vice President of a Chicago area public relations/public affairs firm, Wes has a solid understanding of media relations, crisis communications, content marketing, video production, website and social media development. 

He has expanded his role with Membership because of his demonstrated strategic and creative abilities in delivering member value, benefits and sales initiatives, and his high level of existing engagement with WQA’s members, prospective member industries and key industry stakeholders. He holds a Bachelor's Degree in Speech Communication from Wheaton College.

Kelli Fleischmann
Product Certification Director

Kelli Fleischmann comes to WQA with a strong background within the drinking water industry in project management, business development and international experience.

She most recently served as Business Development Manager for Ahstrom-Munksjo in Mount Holly Springs, Pa., where she was responsible for commercial development and new market penetration. She spent several years with NSF International, serving in a variety of positions including General Manager of Global Water Systems and the Drinking Water Treatment Unit.

Zac Gleason
Laboratory Director 

Zac Gleason comes to WQA from the manufacturing and technology development sector where he oversaw contract and grant-based efforts as well as field testing, internal quality assurance, development experimentation and third-party verification/certification.

He brings more than 15 years’ experience in water, sanitation and hygiene and 10 years of laboratory oversight experience along with hands-on knowledge of more than 85 different water treatment technologies and counting. After working with government agencies and regulatory bodies from around the world, NGOs and non-profits, as well as the manufacturing and for-profit sector he has gained a diverse and unique perspective on the challenges associated with providing clean water to people from all walks of life.

Zac holds a bachelor’s degree in Microbiology from the University of Washington (Seattle). 

Kyle Jones
Finance Director

Kyle Jones is responsible for assuring WQA and WQRF’s accounting policies, procedures and practices are in accordance with generally accepted accounting principles and result in accurate and timely financial reports, as well as adhering to the investment and fiscal policies set by the WQA and WQRF Boards and Finance Committees.

Kyle came to WQA and WQRF with experience in managing nonprofit finance, audits, strategic planning, operations and systems implementation. He holds a bachelor’s degree and PBCA from Indiana University and has a solid understanding of GAAP, finance, IT, operations and nonprofit organizations. 

Tanya Lubner, PhD
Professional Certification & Training Director

Dr. Tanya Lubner has served as WQA's director of Professional Certification & Training since 2005. In this role, she oversees the development of new program areas, creation of educational materials and examinations. 

Prior to joining WQA, Tanya was a sales engineer for a manufacturer of optical spectroscopy instrumentation. 

She holds a doctorate in inorganic chemistry from the University of Wyoming.

Mike Sennett
General Counsel

Mike Sennett comes to the Water Quality Association as General Counsel following many years as an antitrust and competition law partner with the global law firm Jones Day.  Mike is very familiar with the association, its operations and industry leadership, its Gold Seal Certification Program and laboratory services, and its members, their needs and their products and services, having served as outside legal counsel to WQA for more than 25 years.  He also is an adjunct faculty member at Loyola University of Chicago School of Law, serves on the board of the Institute for Consumer Antitrust Studies and is a longstanding trustee of Children’s Home & Aid, an Illinois social services agency assisting families and children in Illinois where the need is greatest.

Mike holds an A.B. with honors in philosophy and English from Quincy University and a J.D, cum laude from Loyola University Chicago, in addition to graduate work in jurisprudence and economics at Northwestern University
Angie Silberhorn, CMP
Meeting Services Director

Angie Silberhorn is WQA's Meeting Services Director, responsible for developing the strategic and operational plan to manage the Association’s conventions and key meetings along with other key customer and member events. She came to WQA after eight years with the Warehousing Education and Research Council, most recently as its Director of Events and Strategy. She holds a Bachelor of Science in Hospitality and Tourism Management from Roosevelt University and is a Certified Meeting Professional.

The Greater Midwest Chapter of the Professional Convention Management Association honored Angie with the 2020 Robert J. Donovan Award, presented to an outstanding meeting professional who leads by example, inspires volunteerism and is committed to the growth of the industry.

Eric Yeggy
Technical Affairs Director

Eric Yeggy plans and coordinates the activities of the Technical Affairs department as well as the WQA Water Sciences Committee, which is charged with tackling the technical challenges facing the drinking water treatment industry. Additionally, Eric serves as the Scientific Consultant for the Water Quality Research Foundation (WQRF) and plays a key role in review and prioritization of research proposals. Eric has been part of the WQA team since 2009 and has since led the development of new industry standards for Sustainability of Water Treatment Products, and industry performance standards for Electrochemical Water Treatment Systems.

Eric holds a Bachelor’s degree in Chemistry from the University of Northern Iowa and began his career in the environmental testing industry. As an analytical chemist in the testing industry, he brings a wealth of knowledge to WQA, including gas chromatography, mass spectroscopy, inductively coupled plasma analysis and numerous other techniques used to test waste water, soil, drinking water, consumer products and industrial materials.

Sam De Laender
International Operations – London, UK

Sam De Laender is an experienced professional certification audit manager. As an independent contractor based in Europe, he serves as the WQA representative for international operations. Sam is responsible in further developing and implementing WQA's international operations in the areas of international membership, product certification, international events and trade shows.

Sam holds a master's degree in Engineering from the University of Leuven, Belgium. Prior to joining WQA, he served as an auditor for product certification at NSF International in Brussels, Belgium, and as audit manager for Europe, Middle East and Africa.

HS Choi
Country Manager - South Korea, Taiwan and Japan

HS (HeungSoon) Choi serves as an independent contractor for WQA's operations in South Korea, Taiwan and Japan. Working as an independent contractor based out of Seoul, HS also performs factory inspections on behalf of WQA's Gold Seal Product Certification Program and works to increase awareness of WQA Membership, Product Certification and Professional Certification.

Prior to representing WQA, HS worked as a business development manager for Underwriters Laboratories (UL Korea) in South Korea. HS holds a bachelor's degree from HanYang University College of Engineering in Seoul..

Vaneet Gupta
Country Manager - India

Vaneet Gupta represents WQA as country manager for India. Vaneet is responsible for representing WQA in India by developing business, conducting audits and acting as our client and member contact for the India market.  

Vaneet has an extensive water and water treatment industry background. He holds a Bachelor’s degree in Mechanical Engineering from Dr. Harisingh Sagar University, MP, India, as well as a Masters of Business Administration from the Centre for Management Development, Modinagar, UP, India.

Julia Zhu
Asia Pacific Operations Manager

Julia Zhu, based in Shanghai, serves as the Operations Manager representing WQA in China. Julia is responsible for the overall operations of WQA in China, including business development, increasing WQA brand awareness and developing public and government relationships.  

Julia has water-related product certification with rich experience in operations, project management, customer services and business development.  Before joining WQA, she was in charge of multiple business lines for NSF, including Water Programs in China.  Julia holds a Bachelor’s degree in Applied Psychology from East China Normal University and is studying for her MBA at Fudan University.