ABOUT HSI WATER
Seven decades of water stewardship—and we’re just getting started.
HSI Water delivers practical, field-proven solutions to complex water challenges—helping customers improve water quality, system performance, and long-term sustainability across industries.
OUR APPROACH
LEADERSHIP
OUR HISTORY
INSPIRED BY NATURE, ENGINEERED FOR YOU.
By improving water chemistry, our technology helps:
HSI Water develops practical water treatment solutions that improve water quality and make it more usable across agriculture, industry, and environmental applications. Our systems are designed to condition water to behave more like natural rainwater—helping balance pH, manage alkalinity and sodium adsorption ratios, and improve how water interacts with soil, plants, and infrastructure.
increase crop performance
protect turf and landscapes
support responsible wastewater management
create more sustainable water use across industries
Today, HSI Water is led by a team combining
legacy expertise with forward-thinking leadership.
With Derek Gonseaux and Jake Manchaca alongside industry pioneer Terry Gong and legacy family John Harmon, the company continues to expand its capabilities while staying rooted in the same principles it was built on—practical solutions, strong partnerships, and real-world results.
OUR HISTORY
In 1955, Darrell Harmon watched his family’s land struggle season after season. Crops weakened. Yields declined. And despite every effort, the soil wasn’t responding.
So he looked deeper.
What he discovered wasn’t visible from the surface—high pH levels and salt buildup were preventing water from ever reaching the root zone. The land wasn’t lacking effort. It was lacking usable water.
From that discovery, the first Harmon SO₂ Generator was created—a simple, effective system designed to restore the natural relationship between water and soil.
A proven solution, decades later
More than 70 years later, that same innovation continues to solve the same core challenge—helping water do what it’s meant to do.
Thousands of systems have been installed across the United States and around the world, supporting growers, vineyards, golf courses, and industrial operations in improving water quality and performance.
Every unit is still built in the United States with care, tested in real-world conditions, and designed to deliver results where it matters most—in the field.
Born on a farm. Built to last.
Today, HSI Water carries that legacy into the future—combining proven chemistry with modern innovation and expanded applications.
From agriculture and vineyards to golf courses and industrial water reuse, the mission remains the same:
Looking forward
to turn complex water challenges into reliable, sustainable solutions.
a commitment to better water—everywhere it’s needed.
What started as a solution for one farm has grown into
