Service diversification benefits many companies by generating multiple revenue streams and minimizing exposure to market downturns. But as Schulteis Pumping grew and evolved, the family-run business elected to jettison several services and instead focus on doing one thing really well: Pumping and repairing residential septic tanks.“We’ve downsized over the years,” says Nate Hill, 38, who now owns the Slinger, Wisconsin-based business with his cousin, Tim Schulteis, 43. “We’ve also become more efficient, especially by running bigger trucks. Bigger payloads equal more money.”Diversification made sense for many years, explains Jim Schulteis, whose father, Robert, founded the business in 1966. “Our generation
