County Well Index County Well Index http://www.health.state.mn.us/divs/eh/cwi/ County Well Index Online CWI ONLINE County Well Index Online (MDH) http://www.health.state.mn.us/divs/eh/cwi/ County Well Index (CWI) Online County Well Index Online http://www.health.state.mn.us/divs/eh/cwi/ http://www.health.state.mn.us/divs/eh/cwi/ http://www.health.state.mn.us/divs/eh/cwi/ County Well Index Online (MDH) County Well Index Online County Well Index Online http://www.health.state.mn.us/divs/eh/cwi/ http://www.health.state.mn.us/divs/eh/cwi/