Welcome to isiWEST

Instrument & Supply WEST, Inc. (isiWEST) is a manufacturer’s representative firm dedicated to serving the municipal and industrial water and wastewater markets. A subsidiary of Instrument & Supply, Inc., manufacturers’ representatives for three decades, isiWEST represents top manufacturers of water and wastewater treatment, transfer and control equipment. From pumps, controls and accessories, to complete water and wastewater plant process equipment, we are proud to offer reliable, economical, proven products as well as innovative new technologies.

Please feel free to use this site to learn more about us, the products we offer, and our manufacturers (Links to our manufacturers’ websites are found on the ‘Manufacturers’ page.), or contact us in any way you wish. Our contact information is found on the “Contact Us” page.

If you are engaged in any municipal or industrial water or wastewater project involving treatment or transfer equipment, we hope we can be of service to you.