Iowa Governor Terry Branstad told reporters Tuesday that Des Moines Water Works — a private utility that provides water to some 500,000 residents in the Des Moines area — should “just tone it down” when it comes to monitoring water pollution from agriculture.
“The Des Moines Water Works ought to just tone it down and start cooperating and working with others, like Cedar Rapids is doing, and other communities in the state of Iowa,” Branstad reportedly said when asked if the state government would work to help Des Moines Water Works customers impacted by the utility’s expected 10 percent rate increase.
Water Works claims that the rate hikes are necessary to cover the increased costs of water treatment due to nitrate pollution, which comes from largely unregulated fertilizer runoff from surrounding farmland. According to the Des Moines Register, Water Works has spent $1.5 million for nitrate removal since December of 2014, and plans to spend up to $183 million more for new nitrate removal equipment built to keep up with high levels of pollution.
The EPA allows up to 10 milligrams of nitrates per liter in public drinking water — anything higher than that is considered a threat to public health. The Des Moines and Raccoon rivers, from which the Des Moines Water Works pulls its water, both have exhibited levels in excess of federal standards, a trend that’s mirrored in major rivers across the state. According to an April report by the Des Moines Register, nitrate levels across Iowa’s major rivers have more than tripled, increasing from about 2 milligrams per liter on average in 1954 to more than 7 milligrams per liter between 1954 and 2010.
“It’s unmistakable. The long-term trend is decidedly upward,” Keith Schilling, a research scientist at the Iowa Geological Survey at the University of Iowa, told the Des Moines Register. Researchers say that the rise of row-cropping, farm drainage tiles, and the loss of perennial crops have helped make nutrient runoff an issue in Iowa.
In response to high nitrate levels, the Des Moines Water Works announced in January of this year that they would sue three neighboring counties that have failed to properly manage the nutrients applied to their farmland.
“When they build these artificial drainage districts that take water, polluted water, quickly into the Raccoon River, they have a responsibility to us and others as downstream users,” Bill Stowe, general manager of the Des Moines Water Works, told Iowa Public Radio in a January interview.
But taking aggressive action like this, Branstad said Tuesday, has alienated Des Moines Water Works from state officials and legislatures, many of whom represent districts where agriculture is the primary economic driver. In each of the three counties that the Des Moines Water Works is suing (Buena Vista, Calhoun and Sac counties), farms account for 98 percent of the surface land.
“If they want to cooperate and work with us, they are much more likely to get assistance and support,” Branstad said. “If they are continuing to sue and attack other people, that is not doing to get them the kind of assistance and support they would like to have.”
Branstad contended that the state has taken steps to reduce nitrate pollution through a set of voluntary measures known as the Iowa Nutrient Reduction Strategy. The Des Moines Register survey of nitrate pollution did show a slight decline in nitrate levels in recent decades, perhaps due to farmers employing more conservation practices.
“I think we in the state of Iowa want clean water and we want to do everything we can,” Branstad told reporters. “We have a nutrient reduction strategy. We are working on a cooperative and collaborative basis.”
But Graham Gillette, chairman of the Des Moines Water Works Board of Trustees, told the Des Moines Register that Branstad’s comments were “hurtful and derogatory.”
“There is no one in a better situation to help with the water situation in the state than the governor, and I am just baffled why he is not interested in even participating in the conversation,” Gillette said.