Staying on top of customer needs is one of the skills Jay and Anita Brendel have used to maintain the successful business they started in 1972. The name, Brendel’s Septic Tank Service, reflects the initial focus of the White Lake, Mich., business.When the company was featured in Pumper in 2001, about 65 percent of the business was septic-system related, and the remaining 35 percent was in portable sanitation. Twelve years later, those percentages have reversed. Besides more of the Brendels’ signature red restrooms in the 150-mile radius around their base, they also carry a diversified line of restroom and shower
