Meet Kelle Zeiher

Kelle Zeiher serves as Garratt-Callahan’s Membranes and Desalination Product Manager, where she combines scientific precision with practical insight to help customers achieve reliable, high-purity water systems. With a Ph.D. in Chemistry and extensive experience in analytical research, product development, and technical support, she brings both depth and creativity to solving complex water treatment challenges.

Before joining Garratt-Callahan, Kelle led scientific initiatives in safety, process optimization, and innovation, earning multiple U.S. patents and contributing to numerous technical publications. A respected voice in the industry, she has shared her expertise as a guest on the Scaling UP! H₂O podcast, discussing how to maximize water’s potential through sound chemistry and system design.

Beyond her technical work, Kelle is a nationally published author of both fiction and non-fiction, including Chicken Soup for the Soul: Living with Alzheimer’s and Other Dementias and the Undercover Cat Mystery series. She draws on both expertise and creativity to help clients overcome their most challenging water treatment issues.

News Wastewater Solutions

BioLargo & Garratt-Callahan Partnership
Written byKelle Zeiher

BioLargo, a science and engineering company that invents and commercializes platform technologies to solve some of the most challenging environmental problems, has partnered with Garratt-Callahan (G-C). This joint project creates and develops a wastewater treatment product design to salvage usable water from commercial facilities wastewater streams. BioLargo already partnered with G-C and specifically wanted to leverage the existing relationship. G-C will receive 25-35 test units for solid separation, waste, and waste treatment in the project’s first year.

Read More BioLargo & Garratt-Callahan Partnership
Reverse Osmosis

Reverse Osmosis Systems Explained
Written byKelle Zeiher

Our most abundant and valuable resource can be detrimental to the very systems that purify it, contain it, and ultimately distribute it to our homes and businesses. Given this, ensuring water is safe for use involves more than just treating it with chemicals to control bacteria and remove contaminants.

Read More Reverse Osmosis Systems Explained
Case Studies

Printing Company Saves $78,000 in the First Year After Using G-C’s Expert Solution
Written byKelle Zeiher

Challenges Poor water quality at a Nevada printing company, with very high silica levels (67 PPM), limited the plant to running its boilers at a maximum of 10 cycles of concentration. Because it was difficult to control the high conductivity required, the system experienced frequent foaming and carryover, and energy costs were escalating. Approach Garratt-Callahan…

Read More Printing Company Saves $78,000 in the First Year After Using G-C’s Expert Solution

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Meet Kelle Zeiher

BioLargo & Garratt-Callahan Partnership

Reverse Osmosis Systems Explained

Printing Company Saves $78,000 in the First Year After Using G-C’s Expert Solution