Water Professionals International (WPI) | The Association of Boards of Certification (ABC)

Water Professionals International (WPI) is an established and influential organization within the water and wastewater sector serving its membership since 1972. The WPI association provides a voice for international certification issues and is a tool for building lifelong professional relationships. Water Professionals International (WPI) is an established and influential organization within the water and wastewater sector serving its membership since 1972. The WPI association provides a voice for international certification issues and is a tool for building lifelong professional relationships. Since 1972, Water Professionals International (formerly known as the Association of Boards of Certification) has been the central water industry authority that ensures these women and men are prepared to meet the standards that their communities can trust in through our testing and certification services.