Our Team

Dr. Dan Wickham

Founder and President

Inventor and President Dan Wickham, PhD, served in the United States Navy and has practiced ecological research and science since 1972. Born in 1945 in the state of Michigan he grew up along the shore of a small lake spending virtually all of his free time immersed in nature and the aquatic environment. He started college in 1963 but then spent the next few years in the US Navy. Cruising the Caribbean and Mediterranean on the USS Boston he discovered his fascination with the ocean. Upon return to college he enrolled at the University of Miami to take advantage of their powerful program in Oceanography and Marine Biology.

He received a BS in biology in 1970 and returned to Michigan to attend the Limnology program at Wayne State U in Detroit. After earning his Masters in Biology he then had the unique opportunity to move to California where he became the Director of the Aquaculture facility at the UC Bodega Marine Laboratory. During that period he was introduced to Wastewater technology, working with Dr. George Tchobanoglous, who was co-principle investigator on the Lobster project. While at Bodega Bay he was able to enroll in the UC Berkeley Zoology department Ph.D. program, studying Marine Ecology and fisheries.

Wickham received his Ph.D. in 1979 and remained at Bodega Bay as a research ecologist. During that period he pursued a parallel interest in wine making, a longtime fascination, and started a small winery, Sea Ridge, on the Sonoma Coast. For ten years he split his time between research and winemaking. This allowed him to add practical hands-on experience in industrial scale microbiology as a winemaker to his academic background in the study of bacteria and phytoplankton.

In 1989 he was introduced to a new process using bacteria to clean up petroleum contaminated soil through a composting process. He rapidly became immersed in this new technology and shifted his focus back to waste treatment. One of the striking features of the wastewater industry was its lack of understanding about the use of selected cultures in their microbiological systems. This led him to create the ABG – a device that allowed him to grow and utilize a special group of facultative bacteria in septic tanks and other wastewater systems. He co-founded SludgeHammer Group and his company has become a leader in providing innovative, cost-effective environmental treatment at scales ranging from individual homes to small communities.

William M. Stoddard

Vice President

William M. Stoddard, Vice-President, brings more than two decades of experience in sales, project management, advanced waste treatment system design and development, spending most of his career as top consultant for one of the largest distribution companies in the State of Michigan. He also brings enormous amounts of construction experience and troubleshooting abilities to the SludgeHammer team. Will’s energy and positivity is contagious. His love for the SludgeHammer technology and the environment continue to fuel his passion to make the world’s wastewater safer and more green for our future generations.

Kathleen A. Beer

General Manager

Kathleen A. Beer, General Manager, brings accounting and operations management expertise to the Corporation. She holds a Bachelor of Science degree in accounting from Lake Superior State University, is a former Court Reporter and has 30 years of experience managing high-income producing law firms.  She has been with the SludgeHammer Group, Ltd., for thirteen (13) years now and is a wealth of information.

Justin Sorenson


Justin Sorenson, P.E. is a licensed engineer with more than 20 years of experience in the fields of civil and environmental engineering. Justin graduated from the University of Michigan-Ann Arbor in 1998. He has designed and managed commercial, residential and industrial projects involving stormwater, wastewater, structural design, and all facets of site development. Justin enjoys bringing difficult projects from concept to completion. He has successfully reversed health department permit denial decisions using SludgeHammer technology. On his off time, Justin rides enduro motorcycles, mountain bikes, and spends family time on their boat in Northern Michigan. He looks forward to the successful completion of your challenging project.

Harry Luzius


Harry Luzius, Engineer, has more than 25 years of experience in the field of civil engineering. He has designed and administered the construction of several million-dollar projects, including sewer collection systems, lift stations, and wastewater treatment systems. Harry is a graduate of the U.S. Military Academy at Westpoint and earned a Master of Science in Foreign Service from Georgetown University.

Chris Putnam

Manager of SludgeHammer Global Manufacturing

Chris has an in-depth mechanical and manufacturing background and is responsible for technology fabrication, assembly,  inventory and quality control. He is also a fireman, first responder, devoted husband and father to three amazing kids. Chris’s hard work and devotion to protecting the environment through Advanced waste water solution is portrayed daily.

Dax Shepherd-Beer

Director of Positivity, Cuteness and Overall Morale Booster!

DAX brings daily joy into the office and supports every staff member with his sweetness and overwhelming ability to bring gladness and happiness. DAX is also responsible for quality control and loves his career at SludgeHammer.