Dr. Greg Kleinheinz, director of the University of Wisconsin-Oshkosh Environmental Research and Innovation Center, has overseen beach-water testing in Door County for more than 20 years. For the past five years, he’s also worked with the County of Door on a well-testing program designed to learn what’s in private-well drinking water. He goes over the cumulative results with Debra Fitzgerald, as well as the most recent testing results released a couple weeks ago. He talks about the hot spots for certain pollutants like nitrates, and what a new tracer program is turning up, and touches first upon how the data-driven beach-water testing program has evolved.