Water is the essence of all life, and Griswold Water Systems’ commitment to treating water in a responsible way is the essence of our mission.

Griswold Water Systems

Our mission is to provide our customers with products that will allow their cooling system to enjoy long-term stability and operate in a consistent and reliable way.   GWS pledges to guarantee customer satisfaction by:

  • Engineering integrated water treatment and filtration products
  • Maintaining a high level of applications experience and an in-depth water treatment knowledge base
  • Manufacturing the best in shop durable products
  • Providing dedicated field service to enhance our customers’ enlightened operational practices, and
  • Supplying exemplary electronic monitoring to augment regular human oversight

3 Critical Advantages

Our products have eliminated scale and bacteria, and controlled corrosion in thousands of our customers’ cooling systems, without the use of toxic chemicals. The three-fold result: more reliable HVAC system operation, a truly green water treatment solution, and an excellent return on investment.

Meet our Team

GWS Headquarters


View Larger Map

E-Mail Orders to: orders(at)griswoldwatersystems.com

GWS Admin & Accounting

(951) 278-8992

1525 E. Sixth Street
Corona, CA 92879

Office Hours:
Mon-Fri 7am to 4pm Pacific

GWS Service

Mike Jakubowski, Service Manager
(386) 589-3657 

Office Hours:
Mon-Fri 8am to 5pm Eastern

GWS Manufacturing

Bob Kazanjy (Kaz), Engineering
(951) 278-8992 or (951) 270-1776 ext 207

1525 E. Sixth Street
Corona, CA 92879

Office Hours:
Mon-Fri 6am to 4pm Pacific