Sioux City: 712-252-5132

Serving the Tri-State Area

Certified Testing Services Inc - Logo

Storm Lake: 712-213-8378


Phone: 712-213-8378


Cell Phone: 712-299-8006


Fax: 712-213-8201



Certified Testing Services Inc

1330 North Michigan Street

Storm Lake, IA 50588


Mailing Address:

PO Box 740

Storm Lake, IA 50588


Business Hours:

Monday - Friday: 7:00 AM - 5:00 PM


Please see our staff page for names and descriptions of the employees at our Storm Lake, IA office.

Visit our Storm Lake office today

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