Tom Philpott and Nina B. Elkadi write:

Chris Jones, the 65-year-old Democratic nominee for Iowa secretary of agriculture, stands at the edge of a pond on a 72-acre farm in eastern Iowa. “What you see here is how fertile Iowa is,” he says, looking intently into the water. Massive bluegills dart about in the clear depths. “When we go up to a corn or soy field, we don’t see this anymore.”

Jones isn’t just talking about the fish. He means the water’s clarity. Iowa’s lakes and ponds are often murky and fetid from algae blooms fed by fertilizer runoff, a byproduct of the state’s vast agricultural industry’s reliance on farming chemicals. Jones spent about a decade as a research engineer, monitoring the state’s rivers and streams. What he learned in that role about Iowa’s water is what spurred his run for office.

Iowa has a long-simmering water problem that has finally begun to boil over — and it’s changing Iowa politics. People are angry and worried about the quality of the state’s water, the health risks it poses and its increasingly undeniable tie to the state’s signature industry: agriculture.

In recent years, Iowa’s cancer rate has climbed significantly above the U.S. average. It now stands as the nation’s second highest, and Iowa is one of only three states where the rate is rising. The situation has put a spotlight on nitrates, which are linked to a growing body of science to kidney, brain and ovarian cancer. Nitrates are a key component in the deluge of chemical pesticides and fertilizers used by the state’s farmers, some of which washes off farm fields and into waterways. A second culprit is glyphosate, the active ingredient in Roundup, the world’s most common weedkiller, which the International Agency for Research on Cancer declared “probably carcinogenic” in 2015, an assessment rejected by the U.S. Environmental Protection Agency.

Historically, candidates for state-wide office in Iowa, from governor to agriculture secretary, Republican or Democrat, have avoided criticizing the agriculture industry, opting instead for platitudes about how Iowa’s farms “feed the world.” This year is different. Voters are steaming mad, and candidates on both sides of the political aisle are pointing fingers at Big Ag — and winning. [Continue reading…]