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In the News


December 2016 werf-logo-small


Technology Spotlight  Pasteurization Technology Group (PTG) applies cogeneration principals to the problem of disinfecting wastewater using a process that is safe, toxic free, and has a low carbon footprint. First off, PTG’s systems generate low-cost electricity to save energy costs by tapping available biogas, natural gas, or both. ”
January 2016


Behind the Scenes: Learning about Pasteurization Technology Group

Watch CEO Greg Ryan, Jr. speak with Stephen Stock of “NBC Bay Area Investigates” about Pasteurization Technology Group and how pasteurization is an important solution to California’s water crisis. Learn more about the award-winning, patented technology behind Pasteurization Technology Group’s system

Click here for more on the series “Surviving the Drought” by NBC Bay Area’s 4-part series.

November 2015

Is Pasteurization the Key to Water Reuse?Andrew Salveson, PE and water reuse chief technologist at Carollo Engineers, explored pasteurization as a treatment method for recycling water in his WEFTEC presentation of “Getting Hot — The Expansion Of Pasteurization For Potable And Non-Potable Reuse.”
September 2014

To a New Level First-of-a-kind technologies enable creation of a “complete removal” tertiary treatment system from a lagoon facility in Central California

Earth Day Should Mark Fervent Commitment to Mitigate Climate Change April 22 is Earth Day, the annual worldwide celebration of support for environmental protection. The official theme of Earth Day 2014 is Green Cities, a campaign focused on helping cities (home to more than half of the world’s population) to reduce their carbon footprint. (Visit to learn how you can help your city go green.)

Craft Beer Brewers Have a New Tool to Slash Energy and Water Costs Every business, large or small, needs to keep a careful eye on energy and water costs, but for industries that use a lot of both, such as breweries, keeping those costs down can make a huge difference in the bottom line. And for a small craft beer brewer, working on tighter margins and a smaller scale, using both water and energy in the most efficient manner is key.

Wastewater Disinfection and Energy Generation Make “Hot” Couple When the Pasteurization Technology Group (PTG) first presented their heat-based wastewater disinfection system to a group of environmental engineers, they didn’t get the response they expected.
July/Aug /2013

Heat of the MomentA recent report by Global Industry Analysts (GIA) projected the global market for heat exchangers to reach $20.8 billion by the year 2018, primarily driven by rising energy costs, tightening environmental regulations and a growing global focus on energy efficiency.

PTG has raised $5 million in Series A financingPasteurization Technology Group has raised $5 million in Series A financing to make wastewater disinfection a less costly, more energy-efficient process for municipalities, agricultural businesses and other water-intensive industrial players.

Pasteurization Technology Group Raises $5M for Wastewater DisinfectionWater utilities and industrial companies are increasingly looking for efficiencies in wastewater cycles. One company that is focused on that mission, Pasteurization Technology Group (PTG), just raised $5 million in series A financing. The new round of money will be used to expand sales, especially in the industrial sector.

Ventura Water honored as leader in water reuse and desalination industry during conferencePasteurization Technology Group (PTG) is pleased to announce that Ventura Water has been honored as a leader in the water reuse and desalination industry during the 2013 WateReuse California Annual Conference held in Monterey, Calif., according to a press release.

Katerva’s “The World’s Best Sustainability Ideas” Award Winner Today Katerva announced winners in each of ten categories and three overall winners. PTG was the winner in the “Materials & Resources” category. To see the accompanying slideshow Click here.

Graton’s New Eco-Friendly Wastewater Treatment Plant Graton will soon have a new disinfection system for its wastewater treatment plant. We have picked a pasteurization process to do this, the same heating process used to kill dangerous bacteria in milk and other dairy products. It will meet the state and federal water quality standards, and it means we no longer have to use chlorine, a dangerous and toxic greenhouse gas, for the final stage of wastewater treatment.

Pasteurization Technology Group Nominated for a Prestigious Katerva Award PTG’s eco-friendly wastewater disinfection technology is identified as one of the world’s most innovative and promising new ideas and initiatives in sustainability.

Sustainable Treatment System Eliminates Need for Chemicals

The X-500 (500,000 gpd) wastewater treatment system from the Pasteurization Technology Group (PTG) is a non-toxic process designed to replace chlorine-based or UV disinfection while generating on-site electric power. The combined heat and power system (CHP) takes the pasteurization process used in the food and beverage industry and applies it to wastewater for reuse in agriculture and other industries.


Ventura Testing More Environmentally Friendly Sustainable System to Dispose of Sewage

Pasteurization Technology Group’s CEO, Greg Ryan, Jr. was interviewed by NPR affiliate KCLU’s Lance Orozco.  They discussed the wastewater treatment system that is being tested at the City of Ventura (CA).

PTG has an innovative system that utilizes the biogas from the facility to help drive a turbine that generates electricity.  They harness the waste heat to disinfect the wastewater stream without any of the harmful chemicals used in most chlorine-based treatment facilities.


Ventura Water Announces New, Green Energy Efficient Technology For Wastewater Disinfection

Ventura Water announced at a press conference on June 19th the initial results of a new non-chemical, energy efficient technology pilot program that will potentially replace the current chlorine-based disinfection process in use at Ventura Water. The project was conducted in partnership with the Pasteurization Technology Group (PTG) whose pioneering technology uses heat generated by renewable energy to kill harmful organisms, the final step in the wastewater cleaning process.


Ventura Water Tests New Wastewater Treatment Technology

Ventura Water officials have known for years they want to start treating waste without chlorine, a dangerous, expensive and difficult chemical. Looking for a replacement, they found pasteurization technology, which kills harmful bacteria and other organisms using heat.


The Men Leading the Water Revolution

A farmer and his son develop a wasterwater treatment system that utilizes biogas as a fuel for a turbine to both disinfect wastewater and also generate renewable energy.  Read the amazing story of how these two men created Pasteurization Technology Group’s disinfection system, technology that could easily replace toxic cholorine and expensive UV at waste treatment facilities around the world.


Fees and Anger Rise in California Water War

The battle over fees for water rages on between San Diego County (CA) and the Metropolitan Water District of Southern California, also known by the acronym M.W.D.  A San Francisco court is to decide.