![Dervin Witmer Has the Answers to Building a Successful Onsite Business](https://cole-onsiteinstaller.imgix.net/https%3A%2F%2Fwww.onsiteinstaller.com%2Fuploads%2Fimages%2Fphoto_mar_30_09_53_35.jpg?crop=focalpoint&fit=crop&fp-x=0.5&fp-y=0.5&h=620&ixlib=php-1.1.0&q=75&w=1024&s=d503d1293e5c5f12fa9caf1289a79842)
The Dig-It Excavating crew includes, from left, Lucian Witmer, Dervin Witmer, James Sanders and Joshua Sanders. They are shown with a Kenworth vacuum truck carrying Curry Supply tank and National Vacuum Equipment blower. (Photos by Lucian Witmer)
About 90 minutes east of the bustle of greater Chicago is the rural southwestern Michigan community of Cassopolis, within easy driving distance of South Bend and Elkhart, Indiana, and Kalamazoo, Michigan. This is where Dervin Witmer has built a thriving wastewater business that...