By Gabriella Sotelo for Sentient.
Broadcast version by Suzanne Potter for California News Service reporting for the Sentient-Public News Service Collaboration

California is known throughout the country for its fruit and vegetable bounty. The golden state produces more than 40 percent of the vegetables we eat and 75 percent of its fruits and nuts. But the state has also struggled with deadly outbreaks of the E. coli pathogen on many of its produce farms - romaine lettuce and walnuts are two recent examples. When outbreaks happen, investigators work round the clock to trace the outbreak, sometimes leading back to contaminated water used to irrigate crops.

Yet exactly where the pathogen comes from originally can be harder to pinpoint. A new report from the Environmental Working Group adds some important data points. Researchers mapped 1,062 industrial meat and dairy operations in the state, and found a worrying 93 percent were located within a mile of a water source for irrigating fresh produce. What's more, 42 percent of the meat and dairy operations mapped - close to half - were found even closer: within a quarter of a mile of a waterway used for irrigation.

California is a leading producer of dairy, as well as beef. The more than one thousand concentrated animal feeding operations, called CAFOs, mapped by EWG house 76.8 million farm animals at any given time.

This many millions of farm animals produce a massive amount of manure, some of which inevitably carries dangerous pathogens like E. coli or salmonella. The bacteria then spreads, traveling through the air in the form of dust, which can settle anywhere, including irrigation canals.

Once in the canal water, pathogens travel right along with it. "If canal water is contaminated with pathogens, there is the risk to pass the pathogens to farms or the produce in the farm," Xiaohong Wei, a researcher at University of California, Davis, who was not involved with the study, told Sentient by email. "It could cause outbreaks and consumers [can] get sick...Especially while consuming the raw produce."

Typically, multiple livestock operations are clustered in close proximity to each other and a waterway, Ethan Bahe, a data analyst at EWG and an author of the report, tells Sentient. "These irrigation canals are a spiderweb," he says. "They go by multiple facilities," which makes tracing any foodborne illness outbreak back to one meat or dairy operation close to impossible.

Besides the waterways, there are also 2.6 million acres of crop fields that are located within a three mile radius of a CAFO, the report found, many of which - 60 percent - are where fruits and vegetables are planted, rather than feed crops, for instance.

On one farm, Bahe says he discovered that only a driveway appeared to separate the feedlot and the canal. And there was no berm - the raised strip of ground often found near waterways - or any other type of protection to stop contaminants from leaking into the water.

EWG researchers say the risk of contamination increases the closer a CAFO is to a body of water. Researchers for the U.S. Food and Drug Administration reached a similar conclusion: more samples of dust contained E.coli when in closer proximity to livestock operations.

Stressed and unhealthy livestock - a staple of industrial meat and dairy operations - are far more prone to spreading pathogens than their healthier counterparts, according to University of Minnesota researchers.

Yet the EPA inspects just a fraction of these operations. According to a report from the Natural Resources Defense Council, the EPA inspected just 0.6 percent of all CAFOs in 2017, for instance.

CAFOs, despite being required to obtain permits under the Clean Water Act for discharging pollutants into waterways, are not required to treat animal manure, unlike human waste. The EPA largely relies on self-reporting, which enables CAFOs to self assess and decide whether they need a permit to pollute.

Consumers can't see whether produce is contaminated, says Kerry Hamilton, a professor at Arizona State University with a background in microbial risk assessment.

While there are steps consumers can take to minimize risk, including washing produce thoroughly, The Environmental Working Group's position is that stronger protection for consumers is urgently needed at the policy level.

"What we're really hoping to call attention to here is the need for policy change," says Sarah Graddy, a senior communications director with EWG. There is an urgent need, she says, "to hold these polluters accountable for the contamination they're introducing into waterways."


Gabriella Sotelo wrote this article for Sentient.


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On Tuesday, 20 Colorado officials sent a letter to the state's congressional delegation protesting six cuts to public lands management in the new tax and spending bill signed into law by President Donald Trump.

John Clark, mayor of Ridgway, said the elimination of river and climate data programs, which are essential to managing the Colorado River Basin and forecasting drought, will put additional burdens on food producers.

"If our farmers and ranchers don't have accurate data about exactly what the situation is with the snow pack and what's happening with the climate, how can they be prepared for each growing season?" Clark asked.

Five active wildfires have burned more than 22,000 acres on Colorado's Western Slope. The letter urged state representatives to reject any additional cuts to the U.S. Forest Service's Community Wildfire Defense Grant Program or other mitigation efforts. Republicans have argued cutting the size of government is necessary to eliminate waste, fraud and expenditures they claim are unsustainable.

Officials are also calling out a provision in the new law they believe undermines local decision-making by forcing oil and gas leasing on public lands. In addition, the law creates new barriers for clean energy leases on public lands, a move Clark worries will lead to the loss of good-paying jobs.

"If we discourage clean energy on public lands, that's going to severely impact our alternative energy workforce," Clark pointed out. "If we can't do wind and solar on public lands, it disincentivizes clean energy all across the state."

Officials are also asking members of Congress to fully fund the National Park Service to ensure proper staffing and maintenance. Clark argued standing up for lands owned by all Americans is essential to preserving Colorado's iconic natural landscapes and rural economies.

"Our economy is hugely dependent on people coming in to visit us and eat at our restaurants and experience these beautiful outdoor environments," Clark emphasized.


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A Wisconsin nonprofit is working with farmers in Southeast Wisconsin to educate communities about the importance of agroforestry, with plans to establish its first urban site in Milwaukee.

The Michael Fields Agricultural Institute has planted more than 400 trees across three sites this year, in partnership with the Savannah Institute. The sites include a community garden and two farms.

Iris Lee, owner of Lee Hemp Farms in Burlington, said agroforestry collaboration is breathing life back into her nearly 50-year-old organic family farm.

"You plant and design things that go together," Lee explained. "That will help not only humans but the animals and nature and bugs."

Agroforestry integrates trees, shrubs and perennial plants into crop and livestock systems. Lee noted one of the project's goals is to raise awareness of the practices and their larger connection to food systems, climate change and communities. The sites will also be used for educational demonstrations.

Community members and project participants helped Lee plant a trail of more than 100 trees in April, from hazelnut and elderberry, to Juneberry and pawpaw trees. They have already grown two to three feet, and she anticipates the berry trees will yield results first. Lee added she even loves talking to her trees and emphasized the physical and mental health benefits of agroforestry.

"Growing something is therapeutic," Lee observed. "To be one with nature -- meaning you know where things come from that you put in your body -- anybody that is concerned about the food and their health, to grow something is to build upon a better human being."

Nolan Burkard, research technician for the nonprofit Michael Fields Agricultural Institute, said diversifying food systems in this way is a growing area of interest for small farmers. Through agroforestry, they can also improve soil health and local climate resilience.

Burkard emphasized it requires long-term investment to get there.

"It takes quite a while for trees to grow up and start fruiting or provide their benefit," Burkard acknowledged. "That's why this project is so important because it is such an investment to plant trees."

Burkard added the institute is accepting applications until July 26 for an urban site in Milwaukee. The selected site will receive $15,000 and planning support to aid in designing it.

Despite the elimination of a handful of alternative energy tax incentives in the new federal budget, Iowa corn farmers will benefit from one that was extended.

Tax breaks and rebates encouraging investment in solar and wind power in Iowa were eliminated in the federal spending plan. However, the Trump administration extended an incentive enabling farmers in Iowa to produce more corn. The Hawkeye State is the nation's top corn producer, much of which is used to produce ethanol.

Chris Bliley, senior vice president of regulatory affairs for the biofuel trade organization Growth Energy, said grain-based fuels burn cleaner and are more environmentally friendly.

"The credit actually goes for production of lower carbon fuels that are used for transportation," Bliley explained. "It includes on-road fuels as well as sustainable aviation fuel. And so, the lower in carbon, the higher the credit."

The Trump administration has made efforts to extract more fossil fuels, which it said will move the U.S. toward energy independence.

Lawmakers in Iowa and neighboring Midwest states have introduced their own tax incentives for biodegradable jet fuel, which Bliley noted will create economic benefits for ag producers.

"To remain competitive, plants in Iowa and Nebraska and throughout the Midwest are investing in some of these key projects to lower their carbon intensity," Bliley observed.

The commercial airline industry is aiming for net-zero carbon emissions by 2050, according to the International Air Transport Association, which could continue to benefit Iowa farmers who provide corn for ethanol production.


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