SuperCritical Water Oxidation

pioneering a new era in sustainable waste management

shifting the waste management paradigm

374Water’s AirSCWO™ systems significantly alter how we manage the waste our society generates. It is a disruptive technology that moves us from treatment and disposal to elimination and resource recovery.

Learn More

unlocking the value of waste

Transforming the simplest and most complex wastes such as wastewater residuals and biosolids, food waste, industrial waste, and PFAS.

Learn More



treatment to the source of generation


off-site waste hauling and disposal costs


waste to reusable water, energy, and minerals


organic pollutants and emerging contaminants

our blog

Effects of Microplastics and PFAS on Human Health

A recent study published in the Journal of Hazardous Materials found that when scientists analyzed the health of volunteer subjects, 80% had microplastics present in their blood cells. Microplastics are plastic particles smaller than 5mm, o...


We saw early on that supercritical water oxidation (SCWO) may change how waste is managed. Our commitment, investment, and execution are part of our corporate culture to make the world itself a better place.

Terry Merrell
Co-founder and Chief Financial Officer of Merrell Bros, one of the largest biosolids management companies in North America

Clean water is not a luxury – it’s fundamental to the health and safety of our communities. I am glad I was able to visit 374Water and see the hard work they are doing to eliminate PFAS contamination from our water supply.

David Price
US Congressman serving the Fourth District of North Carolina

We took notice of 374Water and their supercritical water oxidation (SCWO) process early on, identifying this technology’s potential. Stantec has long been at the forefront in sustainable resource recovery.

Michael McWhirter
Vice President, Stantec

OC San is an environmental agency whose mission is to protect public health and the environment, and a leader in the industry. The AirSCWOTM project is just another example of our long history of researching new and innovative technologies to improve wastewater treatment and resource recovery.

John B. Withers
OC San Board Chairman