Safe Drinking Water Act

Frankie Barnhill / Boise State Public Radio

As KBSX reported Wednesday, the biggest health risk associated with high levels of nitrates in drinking water is a condition called methemoglobinemia, which can make infants six months and younger sick. Babies who drink formula using nitrate-contaminated water are at risk of developing the condition.

Idaho Department of Environmental Quality

"Nitrate" may as well be a four-letter word in the small town of Ashton, Idaho.

The eastern Idaho town of 1,200 people is about 20 miles from the border of Wyoming. Settlers in the area in the 1890s quickly took advantage the fertile volcanic soil beneath their feet, and began diverting water to irrigate the land. Seed potatoes are the big cash crop, though wheat, barley and hay also contribute to the local economy.