‘Iowa Watch’ article examines concerns with common Iowa herbicides


A tractor applied pesticide to a field. (Pieter van Marion/Flickr)
A tractor applies pesticide to a field. (Pieter van Marion/Flickr)
Nick Fetty | July 26, 2016

A recent article by Iowa Watch reporter Lauren Mills examines new research into the environmental and public health concerns of two herbicide chemicals commonly used in the Hawkeye State.

Atrazine and glyphosate – both of which are key ingredients in the herbicide Roundup – have come under scrutiny recently for their potential environmental and health impacts on humans. Earlier this month, California required that labels be placed on all products containing atrazine to warm consumers about the potential human health impacts of the chemical. Specifically, atrazine – the second-most commonly used pesticide in the country, according to the U.S. Department of Agriculture – has been linked to “birth defects, reduced male fertility and reproductive toxicities in women.”

Glyphosate – the most commonly used pesticide in the U.S. – was determined to be “probably carcinogenic to humans” in a 2015 report by the International Agency for Research on Cancer, a division of the World Health Organization.

Last May in Iowa City, the Pesticide Action Network of North America released a report which outlined the impact that pesticide exposure has on children living in rural areas.

To read Lauren’s full piece, visit IowaWatch.orgIowa Watch is produced by the Iowa Center for Public Affairs Journalism, an independent, nonprofit and nonpartisan news service established in Iowa City in 2010.

Study links contaminants from rural well water to birth defects


(Darin/Flickr)
(Darin/Flickr)
Nick Fetty | May 4, 2016

Water contaminants found in some rural agricultural areas could be linked to birth defects in pregnant women, according to a recent study co-authored by a University of Iowa researcher.

Peter Weyer, associate director of the Center for Health Effects of Environmental Contamination at the UI, along with Jean Brender, professor emeritus at the Texas A&M School of Public Health, studied water sources for pregnant women in rural areas of Iowa and Texas. The researchers found the presence of atrazine, nitrate and arsenic in well water samples.

Nitrate, commonly used in fertilizer, has been linked to neural tube defects, oral clefts, and limb deficiencies while atrazine, also used in fertilizer, can cause abdominal defects and gastroschisis. Arsenic contamination was found to be more of an issue in Texas where it seeps into water sources through the bedrock and if consumed by pregnant women can cause developmental problems in fetuses. While each of these compounds individually have been tied to birth defects and other health complications, the effects are unclear when two or more of these compounds are found in a single water source.

This recent study builds on work published by Weyer and Brender in 2013. Their 2013 study looked specifically at nitrate pollution in water and its links to birth defects. The researchers studied water sources for pregnant women in Iowa and Texas and used data from the National Birth Defects Prevention Study.

In both studies, the researchers recommend that before becoming pregnant, women should have wells tested for contaminants. If contaminants are found in a well women should consider other sources such as bottled water.