Mark Borchardt has studied the relationship between septic systems, groundwater and disease for many years. What he found has meaning for pumpers, the people who write septic codes, and the millions of people who depend on septic systems to treat their wastewater and wells to provide their drinking water.Borchardt has a doctorate in microbiology and works at a central Wisconsin laboratory funded by the U.S. Department of Agriculture and the U.S. Geological Survey. In September 2012, he and several colleagues published a study of disease-causing virus DNA in the well water of 14 communities. All 14 showed traces of at












