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KSI is a growing manufacturing company in Michigan.  For 30 years our focus has been on manufacturing high-quality HDPE sanitary and storm water products right here in Michigan.

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Advantages  of  KSI's  HDPE Products

  • Structural Performance

  • TSS Removal/Storage Volume Performance

  • Water Tightness Integrity Performance

  • Chemical Resistance Performance

Our Team

Our team is committed to understanding our clients needs and to completing projects as defined by the client. We actively query and listen to our clients to understand their needs and expectations. KSI offers value engineered alternatives based upon our knowledge and experience. We are proud to provide our clients with a quality value added product in a timely manner.

Ray Kennedy, P.E.

President / Owner

(810) 444-4413

Alicia Grifka, R.A.

General Manager

(586) 419-5922


Todd Kirby

East MI Territory Manager

(248) 770-4107

Mike VanPutten

SW/Central MI Territory Manager

(616) 416-0057

Steven Derry

Office Coordinator

(800) 699-4046

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