In 1988 Sanderson DeHaan Irrigation opened for business with a 1980 Ford 
F-150 and a trailer serving Kalamazoo and the surrounding areas. With hard work and superior customer service Scott Sanderson and Greg DeHaan turned SDI into one of the leading underground sprinkler contractors in South West Michigan. The tradition of quality workmanship and dedication to customer service has continued with Jon DeHaan and Dick Fridley leading SDI for the past 12 years. Now with a fleet of more than 30 sprinkler trucks we service over 6,000 satisfied customers in Southwest Michigan.