About GreenWater Laboratories

Established in 2001, GreenWater Laboratories/CyanoLab is the only private full-service laboratory of its kind, with a strict focus on cyanobacteria and the toxins they produce. This allows us to push the limits of cyanobacteria research and provide quality results.

Unlike other private companies, we do not make advancements proprietary, but rather share our observations and techniques in peer reviewed research. We are scientists first, which has allowed both our business and non-business relationships to grow.

Our experts work closely with our clients to provide technically advanced testing, analyses, monitoring and research – tailored to fit each of their individual needs. Our company mission is to provide accurate and reliable data with the highest level of quality so that our clients can make informed decisions.

Meet the
Cyanobacteria Experts

Amanda Foss, M.S., M.S.
President & Chemist

Amanda is the lead chemist and President of GreenWater Laboratories. As the lead chemist at GreenWater Laboratories, Amanda brings a wealth of experience to the table. Amanda directs all laboratory tasks and manages all major projects. She oversees all laboratory tasks and ensures that major projects are completed on time and to the highest standard. Amanda has almost two decades of experience with cyanotoxin analysis and has published several peer reviewed articles in the cyanobacteria field. Amanda directs research involving the development and validation of methods for the extraction and quantification of algal toxins from biological matrices (e.g. In addition to her scientific expertise, Amanda is also responsible for running CyanoLab – the purified reference material division of GreenWater Laboratories. Through her leadership, CyanoLab has become a trusted source of reference material for labs around the world. . Overall, Amanda's contributions have been instrumental in establishing GreenWater Laboratories as a leader in the field of algal toxin analysis.

Andrew Chapman, M.S.
Phycologist & Limnologist

Andy has been the senior phycologist at GreenWater Laboratories since its establishment in 2001. Under Andy's tenure GreenWater Laboratories has become a leading facility for the identification and analysis of algae in water samples. Andy is a nationally recognized phycologist with over 20 years of experience with identifying algae. He has published numerous research articles on the subject of algae identification, including in the journals Harmful Algae and Phycologia. In addition, Andy has consulted on algae-related issues for governmental organizations and private companies alike. Andy has organized, assisted and administered workshops on the identification and classification of freshwater algae for such organizations as the Florida Lake Management Society, the North American Lake Management Society, and the Florida Fish and Wildlife Conservation Commission.. His expertise in the field has made him a sought-after speaker at conferences and workshops around the country.

Laura Kostrzewski, M.A.
Marine/Aquatic Scientist

Laura is a highly accomplished marine and aquatic scientist, with an impressive academic background that includes a master's degree from Jacksonville University, received with honors. Her passion and commitment to protecting our planet's water resources is unparalleled - she truly is a force to be reckoned with in this industry. One of Laura's many strengths lies in her unique ability to apply her clinical science background (acquired during her time as a veterinary technician) to her work in extracting water and biological specimens for toxin analysis. Her expertise is invaluable in assisting with data interpretation and maintaining laboratory operations, ensuring that the highest standards are always met. What truly sets Laura apart, however, is her deep sense of dedication to environmental conservation and animal welfare. Her unwavering commitment to making a difference every single day is an inspiration to everyone who works alongside her. We are incredibly fortunate to have her as part of our team, working tirelessly to protect our planet's precious resources.

Christopher Schaller, B.S.
Chemist

Chris is a highly qualified individual who received a Bachelor of Science degree in Chemistry with a minor in Communication Studies from the University of Florida. With several years of academic and clinical research experience under his belt, Chris brings a wealth of expertise and knowledge to his role at GreenWater Laboratories. As a key member of our team, he is responsible for performing sample extractions, designing experiments, and managing assay-based screenings such as Enzyme Linked Immunosorbent Assay (ELISA). Chris's passion for scientific advancement and environmental conservation is unmatched, and it is what drives his work in our field. With Chris on board, we know that we can continue to move forward and make significant strides in our efforts towards a healthier, more sustainable future. In summary, Chris is a highly skilled and dedicated professional whose expertise has been integral to the success of our team. We are fortunate to have him as a member of our organization, and we look forward to seeing how he will continue to make a difference in the years to come.

Sumantro Ray, B.S.
Marine Scientist

Sumantro Ray is an experienced chemist and graduate of the School of Marine and Atmospheric Sciences at SUNY Stony Brook, NY. More than a decade of laboratory experience and a lifelong passion for the aquatic environment has brought him to Greenwater Lab where he is responsible for sample extraction and assay-based screenings such as Enzyme Linked Immunosorbent Assay (ELISA). Having a thirst for knowledge and penchant for science communication, Sumantro hopes to meld his experience and passion to become an authority on the subject of algae and cyanobacteria and join the experts here at GreenWater Laboratories.

Madison Clark,
Phycology Assistant

Maddie is a highly skilled and diligent laboratory technician who has been working in the field for several years. With her background as a veterinary technician/assistant, Maddie is a perfect fit for her current role at GreenWater Laboratory where she is responsible for analyzing sampels for potentially toxigenic cyanobacteria via microscopy. She is committed to creating a positive impact on the world through her work and is constantly looking for ways to improve her skills and knowledge. Currently pursuing her A.A. in general studies, Maddie has a clear vision of where she wants to be in the future. Her ultimate aspiration is to specialize in Phycology or advance her career in the veterinary field. Maddie's passion for her work and her dedication to her goals make her an asset to any team.

Emma Kostrzewski,
Laboratory Technician

Emma is a passionate student with a strong ambition to become a marine scientist, driven by her profound love for the ocean. Currently, she serves as a laboratory technician, specializing in toxin extractions, where her meticulous work plays a vital role in understanding and combating environmental threats. In addition to her toxin extraction duties, Emma eagerly contributes to phycology research, spending hours peering through microscopes to study cyanobacteria. Her dedication to exploring the intricacies of marine life and her hands-on experience in the lab highlight her commitment to making a positive impact in marine science and environmental conservation.

Amanda Thomas
Receptionist / Intake Specialist

With a strong appreciation for the outdoors, water, and animals, Amanda Thomas brings a deep respect for the environment into every aspect of her work. Her passion for environmental preservation informs both her personal values and professional approach. Before transitioning into a laboratory setting, Amanda served as a 911 Dispatcher—a role that demanded precision, adaptability, and the ability to remain calm under pressure. This experience sharpened her organizational skills and gave her a unique perspective on managing day-to-day operations efficiently. Amanda holds an Associate of Applied Science (AAS) degree and is known for being a fast learner who thrives in dynamic environments. Whether solving problems on the fly or streamlining workflows, she approaches each challenge with focus and resilience.

Get updates on new products, services and research news from GreenWater Laboratories. Our newsletter is sent approximately every 6 months to a year or when critical algal news is “blooming”.

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Contact Us

Our scientists are here to help, please reach out if you have questions.

(386) 328 - 0882
(877) 869 - 2542

205 Zeagler Drive, Suite 302, Palatka, Florida 32177

Professional GreenWater Lab photos by Brant Sanderlin/Berry College

About GreenWater Laboratories