Geotechnical Engineering

Name: Certified Testing Services, Inc.
Address: 419 W 6th St., Sioux City, IA, 51103, USA
Telephone: (712) 252-5132

Construction Materials Testing

Your Partner in Precision and Promptness: Certified Testing Services, Inc.

At Certified Testing Services, Inc., we pride ourselves on being more than just a service provider; we're your partners in ensuring quality and reliability. With 36 years of rich experience under our belt, our journey has been one of dedication, skill, and unwavering commitment to our clients. Our client-centric approach is the cornerstone of our business, guiding every interaction and service we provide.

Why Choose Certified Testing Services, Inc.?

Fast, Accurate, and Reliable Results

Trusted Professionals

Locally Owned and Operated

Certified Laboratory

IOWA DOT

Nebraska DOT

Army Corps of Engineers

Valued Client Care

The Base of a Strong Foundation Starts Here!

Geotechnical Engineering

Geotechnical engineering involves analyzing earth materials to guide construction projects. Our experts assess soil, rock, and groundwater conditions to ensure foundations are safe, stable, and suitable for long-term development.
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Construction Material Testing

We offer comprehensive testing of construction materials, ensuring they meet stringent quality standards. From concrete to metals, our services guarantee the integrity, durability, and safety of materials used in your construction projects.
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About Us

Serving Sioux City and Storm Lake, IA, Certified Testing Services, Inc. offers experienced and professional geotechnical drilling, geotechnical engineering, building material testing, aggregate inspections, and soil testing services.
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Contact Us

We have offices in Sioux City and Storm Lake, IA. You can visit any of our locations, and our team will be there to help you. We have over 36 years of experience offering geotechnical drilling, geotechnical engineering, construction material testing, and more.
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