While isolated hot spots of nitrates plague groundwater in Jackson Hole, the pollutant doesnât yet pose a problem in much of the valley. Fluoride, which can yellow teeth, naturally occurs in high levels in water drawn up from wells near Munger Mountain and Red Top Meadows. And hard water that can calcify and clog up plumbing and kill hot water heaters is pretty widespread throughout Teton County. Those are some of the insights that can be gleaned from a new batch of maps produced over the last year and a half by the Teton Conservation District. Thereâs one countywide map each for ei...