> 4
billion turnover
locations
countries
50
employees
9,000
325
patent families 

Omya Facts & Figures

170
17
Laboratories

Welcome to Omya Kansas

Omya is a worldwide mineral processing company, with North, Central, and South American headquarters located near Cincinnati, Ohio. 

In Kansas, Omya produces granulated products made from limestone, gypsum or dolomitic lime for the agriculture and turf & ornamental markets. 


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Omya is a leading global producer of industrial minerals – mainly derived from calcium carbonate, dolomite and perlite – and a worldwide distributor of specialty chemicals.

Founded in 1884 in Switzerland, Omya has a global presence extending to more than 170 locations in over 50 countries with 9,000 employees.

Committed to implementing the principles of sustainability at all company levels, Omya provides added value products and services from responsibly sourced materials to meet the essential needs of current and future generations.

Interested in applying? View our current openings or email us your resume!

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Omya, a Solution Provider - Committed, reliable, with a passion for quality 


We are serious about our obligations to regulatory and environmental matters but equally so to our employees and our local communities. We are investing in our Kansas operations to ensure good paying jobs, a state of the art production facility, and quality products for our customers. 

Our commitments include providing a high performance workplace with opportunities for advancement, and capital improvements to enhance environmental protection. 

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Making life better through our passion for minerals and chemistry

Latest News

Introducing New Names in Our Granulated Product Lines

We are pleased to announce the renaming of select granulated products to streamline our portfolio.

For the agriculture market:

Omya Calciprill 14S will now be known as Omya Sulfoprill

Omya Calciprill 95 has been rebranded as Omya Calciprill

Omya Magprill remains unchanged

For the turf market:

GreenLight Prime becomes GreenLight Greens

GreenLight is now GreenLight Fairway

GreenLight Max remains unchanged

These name adjustments are not just about simplifying; they represent a strategic move to enhance the overall clarity of our product offerings. It's important to note that this name change does not impact the quality or specifications of our products. Our commitment to delivering high-quality, reliable products remains unwavering.

Learn more about our agricuture productsLearn more about our turf products

Omya Kansas Embarks on Major Plant Improvement Project

Omya Kansas is delighted to announce the commencement of a plant improvement project at our granulation facility in Wathena, Kansas. Acquired from a highly regarded specialty fertilizer producer with over 25 years of experience in the American Midwest, this facility is a key part of our commitment to excellence.

Key Focus Areas of the Improvement Project:

Safety: Elevating the safety standards of our facility.

Efficiency: Enhancing supply chain efficiency.

Quality: Improving product quality to better meet your needs.

This renovation project underscores our dedication to improving manufacturing processes and better aligning with the evolving needs of our customers. The upgraded plant will position us more strongly in the Midwest agricultural market and throughout the U.S. as we continue to invest in its development.

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Omya Kansas Nurtures Soil, Crops and a Rural Community

Facility Undergoing Renovation Provides Granulated Specialty Fertilizer Products and New Jobs

Omya may be new in town, but the company has a 140-year history and deep roots as a leading global producer of mineral-based products that help to increase cropland productivity. Nurturing the Earth and feeding the crops, our offerings are meticulously crafted for swift action and tangible outcomes.

In addition to supplying hardworking farmers throughout the Midwest with world-class granulated products, Omya is making a positive economic impact on the region, pressing forward with a plant improvement initiative at our granulation facility in the small town of Wathena, Kansas. This project highlights our unwavering commitment to serving the heartland's farming community while refining our production methods to stay abreast of our customers' growing demands.

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Omya Completes First Stage of Improvements to Specialty Fertilizer Granulation Plant, Bringing Good Jobs to Midwest Town

Workplace improvements and higher pay revitalize Wathena, Kansas agricultural minerals facility that anchors Omya’s growing U.S. presence

 Wathena, Kan., June 18, 2024 – Omya, a leading global producer of industrial minerals and a worldwide distributor of specialty ingredients, is proud to announce the completion of the first round of improvements to its granulation facility in Wathena, Kansas, which produces granulated products made from limestone, gypsum or dolomitic lime for the agriculture and turf and ornamental markets. Omya acquired the plant in 2022 with a commitment to investing in the business, giving farmers expanded access to world-class soil products and developing it into a high-performance workplace with opportunities for advancement.

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The Vital Role of Soil Health for Drought Resilience in Midwest Crops

Keeping the soil healthy is one way Midwest farmers can mitigate the risks of droughts as climate change heats up. Drought hits the Midwest economy hard, impacting crops grown for ethanol production and animal feed in addition to human food.1 Scientists have warned that climate change will lead to more summer droughts and warmer winters in the Midwest in the years to come, altering crop growth cycles and necessitating innovative agriculture and soil management practices.2

Healthy soils with good structure, high organic matter content and active microbial communities are essential for enhancing drought resilience in row crop farming, particularly in the Midwestern U.S. By improving water-holding capacity, infiltration, nutrient availability and soil biology, healthy soils can temper the impacts of drought and support sustainable productivity in the face of changing climate conditions. 

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Macronutrient Fertilizers: Hidden Champions of Crop Nutrition

When we talk to Midwest farmers about plant nutrients, the first ones to come up are usually the big three—nitrogen, phosphorus and potassium. But macronutrients like calcium, magnesium and sulfur are also vital for growth and development. 

Calcium, magnesium and sulfur affect the growth, quality and market value of crops, as well as crop nutritional profiles, size, color, flavor and overall yield. By understanding their functions and ensuring their availability in your soil, you can raise healthier, more productive crops.

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Going back to our roots: sustainable farming with natural minerals

As our agriculture industry faces the challenge of producing more food to feed a growing population, the risk of soil degradation and the need for environmental sustainability become critical topics. 

Dr Koetting, Director Innovation & Technical Marketing Agriculture at Omya says restoring and maintaining soil health is crucial for the future of sustainable food production. “We measure soil health in terms of physical, chemical and biological properties. If any of these are deficient, then the soil will be less fertile and productive. The addition of calcium carbonate can have a positive impact on all three aspects of soil health, from improving soil structure through better flocculation, to increasing nutrient availability by raising pH, to optimizing the environment for soil microorganisms that break down organic matter.” 

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