Contact Us

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Watertown, South Dakota (Corporate Headquarters) [ map/directions ]

Minnetonka, Minnesota (Minneapolis Technical Office) [ map/directions ]

Onyx EMS Headquaters
2920 Kelly Avenue
P.O. Box 430
Watertown, SD 57201

Minneapolis Technical Office
6110 Blue Circle Drive
Suite 130
Minnetonka, MN 55343

Jeanne Goens
Inside Sales
Phone: (605) 886-2519
Toll Free: 1-800-258-7989
Fax: (605) 886-5123
E-mail: jgoens@onyxems.com