The RioVation team is dedicated to designing and manufacturing practical and affordable solutions for onsite wastewater treatment challenges which impact people and our environment. We care about the contractors we work with and design treatment solutions for, their customers, and the environment that we all share and value.
Gig Drewery
Gig Drewery, alongside his wife Trina, boasts an impressive legacy spanning over four decades in addressing onsite wastewater treatment challenges. Their journey began in the early 1980s when they began installing aerobic treatment units (ATUs) in East Texas where they played a pivotal role in obtaining state approval for ATU usage in 1994. Gig is a licensed Texas installer II, licensed maintenance provider and a licensed site evaluator. They went on to found Hydro Action and transitioned from installing to designing and developing NSF-tested and certified ATU products.
Gig’s contributions extend beyond innovation; a number of his patents have become public domain and continue to shape the industry. He previously sat on the National Sanitation Foundation (NSF) joint committee for a number of years. As a founding board member of the National Onsite Wastewater Recycling Association (NOWRA) and the inaugural president of the Texas Onsite Wastewater Association (TOWA), Gig has left an indelible mark on the sector.
The couple's steadfast commitment to tackling onsite wastewater challenges, combined with over six years of intensive research and development, has led to the creation of the innovative RioVation® BioMaze® technology, which transforms septic tanks into Suspended Biofilm Generators™. Gig and Trina's enduring passion reflects their dedication to delivering sustainable, cost-effective solutions for both the industry and the environment.

Stephen Moeller
Stephen Moeller’s career journey in the industrial sector began with a solid foundation in the electrical wholesale business. Building on this early experience, he transitioned into the field of industrial electrical, controls, and instrumentation contracting, gaining valuable expertise in these areas.
For over a decade, Stephen played a pivotal role in a global organization, where he focused on developing and managing business relationships and procurement for large-scale construction projects. His dedication and strategic approach contributed significantly to the success of these initiatives.
In collaboration with Gig Drewery, Stephen is involved in the development and marketing of the RioVation® BioMaze® product line, demonstrating his entrepreneurial spirit and ability to bring innovative solutions to market. Stephen’s interest in wastewater treatment led to extensive research into the field’s current state and historical evolution. More recently, he has delved into microbiology, recognizing its importance in advanced wastewater treatment. Stephen’s commitment to continuous learning and exploration is a testament to his drive to stay at the forefront of his fields of interest.