Established 1951

The original name in soil water measurement


No startup hype. Proven technology. Real support.

Simple, affordable, and reliable solutions for efficient irrigation scheduling and improved yields — for 75 years.

Grower checking irrigation data in orchard at sunset
75 Years of Excellence
100+ Countries Worldwide
ISO 9001:2015 Certified Manufacturer

Precision Measurement for
Modern Agriculture

From field-proven sensors to cloud-connected monitoring systems, our complete line of products delivers the accurate data you need for optimal irrigation decisions.

Soil sensors

Sensors

Industry-standard IRROMETER tensiometers and WATERMARK soil moisture sensors backed by decades of research and field experience.

Explore Sensors →
IRROcloud IC-10 in field

Data Solutions

Automated data collection with IRROcloud and WATERMARK Monitor systems. Real-time access from any device, anywhere.

View Data Tools →
SSAT soil solution sampler in field

Soil Sampling

Soil water tools for precise nutrient management. Easily extract soil water samples for analysis.

Learn About Sampling →

Trusted by Growers,
Researchers, and Experts

As pioneers in soil water measurement technology, we've built a reputation for accuracy, reliability, and innovation that spans 75+ years.

1951 Founded
USA Manufactured in California
6 Continents Served

Research & Extension Resources

Universities and cooperative extension agencies have used IRROMETER and WATERMARK products in research and field programs for decades. A selection of published resources:

University of Arkansas

Mississippi State University

University of Nebraska

Alabama Cooperative Extension

University of New Hampshire Cooperative Extension

University of Florida — IFAS Extension