Broadcast Audubon

Great Circle Industries i50 Waste Water Treatment Module Update

ISC-Audubon Platinum Member Great Circle Industries (GCI) has developed its initial product, the "i50", which treats sanitary wastewater, i50 cutawaysmand produces irrigation-grade product water, high in plant nutrients, low in suspended solids, and meeting the highest disinfection standards for recycled water. The capacity is 50,000 gallons per day, enough to irrigate up to 10 acres of grass, and to treat the wastewater production of 200 households.

Now, after 5 years, of product development and testing, the GCI first production module was installed at the Dublin San Ramon Water District in Pleasanton, CA in April 2013. Since its installation, the i50 has been undergoing calibration and programming to optimize automatic and remote operation, including the flow and purge rates and the output characteristics for this breakthrough technology.

During the calibration process, however, the i50 has shown its extraordinary capability to produce high quality effluent by dramatically reducing the total coliform and fecal coliform. Recent tests of output water indicate measurements of 0 total coliform at 230 MPN and fecal coliform at 40 MPN. These numbers currently qualify for Type 2 water in Texas and B+ water in Arizona. This is a substantial development because the i50 is not yet running at optimal capacity.

Later this summer, the i50 will begin testing under California’s stringent Title 22 review process funded by a $750,000 grant from the California Energy Commission. The data will be verified by Carollo Engineers.

At full throughput, the energy efficient i50 uses only 3Kwh per 1,000 gallons compared to more expensive systems using chemicals and filters. The treatment process separates solids from the liquid in the initial stages. As a result, the treated water is less expensive to produce, is disinfected, and retains a nutrient rich value. We are using a proven, state of the art UV radiation system to kill and neutralize viruses and bacteria. The i50 water output is suitable for crops, golf courses, and other critical water reuse projects. Permanently housed in a 20x8x8 shipping container, the i50’s small footprint is an ideal solution for point source waste water treatment and sewer district expansion. The chemical-free treatment system allows for a low maintenance and low cost of operation compared to conventional treatment systems. is the sales agent for Great Circle Industries. Join interested communities from Texas, Colorado, Arizona, North Dakota, and North Carolina to find out more about the i50, the intelligent solution for water reuse. The i50 can be ordered for delivery this year throughout the United States. Contact us to begin the process and take advantage of energy efficient water reuse solutions offered by the Great Circle Industries’ i50 Waste Water Treatment Module.

For more information, please contact:
Jim Medall, COO of Great Circle Industries, Inc.
704-649-2190 This email address is being protected from spambots. You need JavaScript enabled to view it.

SustainAbility Newsletter Archive Article (random)

Golf's Drive Toward Sustainability

EIFG LOGOStewardship of natural resources, engagement in the communities where golf facilities are located, and maintaining prosperous businesses are vital to the long-term health of the golf industry.

The Environmental Institute for Golf, the philanthropic organization of the Golf Course Superintendents Association of America, is leading a collaborative industry-wide effort toward a sustainable approach to golf facility management.

Sustainability is about ensuring profitable businesses while making decisions that are in the long-term interest of the environment and communities. The focus is on continual improvement by professionally managing and conserving resources and inputs, and reducing waste while providing playing conditions that satisfy golfers of today and tomorrow.

Learn More About The Environmental Institute for Golf and Golf’s Drive Towards Sustainability at:


References and Sources used in this issue of SustainAbility Newsletter Include:

Audubon Lifestyles

The International Sustainability Council

Sustainability Campaign

Golfs Drive Toward Sustainability

World Migratory Bird Day

The Golf Course Superintendents Association of America

The United States Golf Association (USGA)

Sustainable Golf & Development

Sustainable Forest Initiative

National Geographic

International Migratory Bird Day 2011 


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Sponsors are a critically important part to the success of ISC-Audubon. As a non-profit organization dedicated to advocating sustainability, we offer all of our programs to our members free of charge, and are publicly available for download on our website.

ISC-Audubon is proud to extend the opportunity to select businesses and organizations to become sponsors of our sustainability education and advocacy programs. As a sponsor, your business or organization can realize significant value.

Click here to learn more about this opportunity. 


A Coalition for Good - Spreading the Seeds of Sustainability

ISC-Audubon is a coalition of non-profit organizations and initiatives that include The International Sustainability Council (ISC), Audubon Lifestyles, Audubon Outdoors, Planit Green, Broadcast Audubon, and the Audubon Network for Sustainability. 

Funds generated through memberships and donations are used to provide fruit & vegetable seeds, wildflower seed mix, and wildlife feed & birdseed to urban and suburban communities around the world. These seeds are used by communities to establish fruit and vegetable gardens, bird and wildlife sanctuaries, and for the beautification of urban and suburban landscapes by creating flower and native plant gardens.

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