Troubled waters: Farm pollution threatens drinking water

April 12, 2012
Water that runs off fields treated with chemical fertilizers and manure is loaded with nitrogen and phosphorus, two potent pollutants that inevitably end up in rivers and lakes and set off a cascade of harmful consequences, contaminating the drinking water used by millions of Americans. This is the finding of a study by the Environmental Working Group, released today.

WASHINGTON, D.C., April 12, 2012 -- Water that runs off fields treated with chemical fertilizers and manure is loaded with nitrogen and phosphorus, two potent pollutants that inevitably end up in rivers and lakes and set off a cascade of harmful consequences, contaminating the drinking water used by millions of Americans. This is the finding of a study by the Environmental Working Group, released today.

Treating this water after the fact to clean up the contamination is increasingly expensive, difficult and, if current trends continue, ultimately unsustainable, according to findings in the report, entitled Troubled Waters: Farm Pollution Threatens Drinking Water.

The report focuses on four states in the core of the Midwestern corn belt - Illinois, Iowa, Minnesota and Wisconsin. Nutrient overload in surface and groundwater is a significant water quality problem for these states, making nitrate and phosphorus levels higher and algal blooms more frequent compared to national averages, according to the report’s authors.

“To tackle polluted source water, water utilities in the region are often forced to install expensive treatment plants that can cost millions to install and operate. USDA economists estimate that removing nitrate alone from drinking water costs more than $4.8 billion a year,” the EWG authors wrote. “The cost of dealing with algal blooms is particularly daunting. The total capital cost of water treatment that would address cyanobacterial blooms and cyanotoxins, can range between $12 million and $56 million for a town of 100,000 people.

“The only true solution is to confront the issue upstream, at the point where pollution - much of it from farms - first flows into America's precious surface water and groundwater. This year's debate over renewing the federal farm bill is a referendum on America's commitment to protecting our drinking water supplies at the source,” the authors said.

With the exception of large animal feeding operations, farm businesses are exempt from the pollution control requirements of the federal Clean Water Act, and few states have authority to compel farm businesses to adopt practices that reduce the amount of farm pollution reaching rivers, lakes and bays. As a result, the farm bill, which is renewed every five years, serves as the primary tool for addressing the environmental damage caused by polluted runoff from agricultural operations.

According to the Environmental Working Group, Congress should take three steps to ensure the new farm bill protects drinking water:

Reform Farm Subsidies - Congress should end direct payments, reduce subsidies for farm insurance programs and refuse to create new farm entitlement programs that encourage all-out production to the detriment of the environment. Instead, lawmakers should help farmers when they suffer deep losses in yields and provide options for them to purchase additional crop and revenue insurance at their own expense.

Renew the Conservation Compact - Congress should renew the "conservation compliance" provisions of the 1985 farm bill by relinking wetland and soil protection requirements to crop insurance programs. In addition, legislators should require farm businesses that receive subsidies to update their conservation plans and should strengthen the government's enforcement tools.

Strengthen Conservation Incentive Programs - Congress should strengthen programs that reward farmers who take steps to protect sources of drinking water. In addition to providing adequate funding, Congress should expand "collaborative conservation" tools that award funds to groups of farmers working together to protect drinking water sources. Greater focus should be placed on restoring buffers and wetlands that filter runoff of farm pollutants.

To read the full report, visit www.ewg.org/report/troubledwaters.

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