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A bill which would have given pesticide companies legal immunity from health problems caused by their products did not make it through the legislature this year in Iowa.

A recent poll from the Iowa Association for Justice found 89 percent of Iowans oppose giving pesticide companies legal immunity, including 87 percent of Republicans.

Jennifer Breon, Iowa organizer for the group Food and water Watch, said the issue is about human health, which most Iowa lawmakers understand.

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"Our legislators are Iowans as well," Breon pointed out. "Some of them are farmers. Some of them have probably used these products over the years and have family members who might have cancer or other health issues. And they have to wonder, you know, what's causing this?"

Registration records show the pharmaceutical company Bayer has four lobbyists in Iowa alone, a state where several companies often pool resources to hire just one.

More than 30 groups representing Iowans wrote a letter to House leaders calling on lawmakers to oppose the so-called "Cancer Gag Act."

Breon noted putting it on hold, at least for this year, had broad public support even outside the Statehouse in Des Moines.

"If you've seen the advertising all around Iowa on billboards and social media, this bill is backed by the industry and by Bayer in particular," Breon added.

While there is some debate about which pesticides are carcinogenic, it has been well documented they run off into groundwater. Iowa has the second-highest cancer rate in the nation and new cases are growing more quickly than in any other state.