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Harvest Public Media reports on food systems, agriculture and rural issues through a collaborative network of reporters and partner stations throughout the Midwest and Plains.

As fertilizer pollutes tap water in small towns, rural Kansans pay the price

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David Condos / Harvest Public Media
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Former Haviland mayor Robert Ellis tried to save the town money by putting water filters in everyone's homes. But after state regulators said no, Haviland had to build this multimillion-dollar nitrate removal plant that it'll be paying off for decades.

For towns with only a few hundred residents, keeping tap water clean and safe can pose a crippling expense. The predicament is likely to become more common in western Kansas as farm chemicals seep into dwindling water supplies.

HAVILAND, Kansas — Fifteen years ago, Robert Ellis got a letter he never wanted.

Haviland’s drinking water had failed a state safety test. It had more nitrate than federal limits allow. And as mayor of this small town east of Dodge City, it was his job to help the town figure out what to do.

Building a new water treatment plant would cost millions, so the town started installing water filters one home at a time. That penciled out far cheaper than one central plant.

But state regulators told them no. Those in-home filters wouldn’t cut it.

The town pleaded its case in a series of meetings and hearings that lasted years. To no avail. If Haviland didn’t build a plant, Ellis said, the state would have fined the town thousands of dollars a day.

“There was quite a battle,” he said. “But as usual, the government won.”

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David Condos / Harvest Public Media
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The small town of Haviland sits east of Dodge City on US 54. The town's nitrate removal plant, the tan warehouse shown on the right, cost $2.4 million to build.

So after a decade, Haviland finally agreed to build a nitrate removal plant to get its contaminant levels under the limit.

The price tag? $2.4 million — for a town of just 700 people. It was almost as if every last person in Haviland just got a bill for roughly $3,500.

Today, the water in Haviland is cleaner and safer. The regulators are satisfied. But Ellis said when the town’s residents see the plant, they just think about how much it’s costing them.

“They’ve been drinking out of their garden hose all their lives. … They don’t worry about the nitrates,” Ellis said. “All they look at (is) their water bill.”

Dozens of other small towns across Kansas have found themselves in similar spots in recent years — caught between massive costs and small budgets, between answering to their residents or state regulators, between the way agriculture sustains their economies and the way it channels some chemicals, like nitrates, into their water.

A plant to clean up nitrates cost $1.1 million in Everest, a northeast Kansas town of about 270 people.

St. John in central Kansas spent just under $3 million on a plant to get rid of nitrates for its 1,200 residents.

In Woodston near Hays, the nitrate removal plant cost $1.15 million — for a town of fewer than 100 people.

And more than 30 other rural towns across Kansas still run over the legal limit for everything from nitrates to arsenic to chemical byproducts of the very treatments used to make the water drinkable.

For towns this small, a multimillion-dollar project weighs heavy. Even years later, Haviland’s current mayor, Aaron Stokes, said it “dominates … the conversations we're having.”

“It's hard to do anything else,” he said, “because we've got this thing looming over us.”

And in addition to the price of construction, the Haviland plant — which requires a $5,000 semi-truck load of salt every few months — takes a lot to maintain.

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David Condos / Harvest Public Media
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Haviland town leaders Aaron Stokes, right, Robert Ellis and Kay Unruh stand in front of city hall.

Water bills in Haviland have just about tripled to cover the costs, including repaying a $1.55 million loan the town got from the state. For homes using 5,000 gallons of water, monthly bills went from less than $15 to $42.

City Council President Kay Unruh said it will still take decades for Haviland to pay it all off.

And the most frustrating part, she said, is the town came up with an alternative — those in-home filters — that could have better fit the town’s financial limitations but felt “backed into a corner” when it came to building the plant.

The state didn’t believe Haviland could maintain all those filters spread throughout the town, which includes a senior living center and a college with fewer than 200 on-campus students, even though Unruh said the in-home reverse osmosis filters would have actually removed more nitrate than the plant does.

She described it as another example of the state or federal government not trusting rural Kansans to decide what’s best for themselves.

“Our hands are tied financially because all of our resources are going to comply with these regulations,” Unruh said. “We feel like we’re being strangled.”

Something in the water

People in western Kansas have enjoyed historically cheap tap water that’s drawn from the underground Ogallala aquifer and treated only with chlorine.

“Very few rural water districts have a treatment plant,” Kansas Rural Water Association consultant Bert Zerr said.

If that water stays within federal safety standards, it’s ready for the faucet. But when it goes over the limit, Zerr said, residents’ water bills shoot up.

“If they’re not doubling, they’re close to it,” he said.

Those small-town treatment plants are becoming more common in farm country where more nitrate from fertilizer runoff and cattle feedlot waste makes its way into the ground.

A recent nationwide study from Iowa State University shows the use of nitrogen fertilizer nationwide has increased 34-fold since the 1940s. And agricultural regions from central California and eastern Washington to the Great Plains are home to some of the country’s most likely places for nitrate violations.

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USGS
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Two maps from the United States Geological Survey show predicted nitrate concentrations in shallow groundwater, left, and deeper groundwater that's commonly used for drinking water. Agricultural regions like western Kansas and the High Plains have some of the most widespread predicted violations.

Closer to home, a Kansas State University study that tested water wells in rural central Kansas between the 1970s and 2016 found that nitrate levels increased in 95% of those wells.

David Cwiertny, who directs the Center for Health Effects of Environmental Contamination at the University of Iowa, said nitrate levels will likely continue rising until those regions do more to keep the chemical from getting into water supplies in the first place.

“We can’t be surprised that we have increasing levels of nitrate in our water,” Cwiertny said. “We know that we’re putting down increasing amounts of nitrogen on the land.”

So just how dangerous are these chemicals in the water? It’s complicated.

To start, the federal standards for drinking water were set more than two decades ago to guard against severe health consequences — effects that someone would experience shortly after drinking a chemical.

But Cwiertny said even the safety regulations crippling the budgets of so many small towns are likely too loose.

Recent research suggests drinking water with nitrate for years could cause other serious health issues — things like bladder cancer, birth defects and preterm delivery — even at concentrations below the legal limits.

“We know so much more about what chemicals are out there and what the chemicals we know about can do to us,” Cwiertny said. “Our regulations need updating.”

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David Condos / Harvest Public Media
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A pipe at Haviland's treatment plant carries water out of the large nitrate removal vessels shown to the right.

The inevitable

Climate change threatens to make things worse.

As drought becomes more common, farmers pump more water from the aquifer to irrigate crops. And as underground water levels dwindle, the chemicals in that water become more concentrated.

“It's been taken for granted that our water, groundwater especially … you can just take it right out of the tap and not have to be concerned about the quality,” Kansas Farm Bureau public policy director Kent Askren said. “That was probably never the case, but it certainly is not the case today.”

And what about the people adding fertilizer to the ground?

Askren said that while Kansas farmers may not use less fertilizer than they did decades ago, they do have the ability to use it more efficiently thanks to new technology.

Historically high fertilizer prices mean farmers have plenty of reasons to do just that.

“Sometimes the picture is painted that agriculture is just willy nilly out there, throwing this stuff out,” he said. “This is one of their most expensive inputs. … They don't want to waste an ounce of it.”

But even if every farmer stopped fertilizing tomorrow, it could take decades for the nitrates already in Kansas groundwater to dissipate.

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David Condos / Harvest Public Media
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Utilities director Rod Huffman stands next to the water well in Oakley that has too much nitrate. The town plans to build a new treatment plant to get its water back under the federal limit.

And for western Kansas towns that have yet to see chemicals increase in their water, it’s likely just a matter of time before they do.

“I would not be surprised,” Oakley utilities director Rod Huffman said, “especially in the farming community areas, where the stuff that causes it the worst is.”

Three years ago, Huffman received his own dreaded letter from the state. One of Oakley’s water wells had too much nitrate.

So the northwest Kansas town of about 2,000 people had to start giving out bottled water to residents and posting notices around town warning of the potential danger each time it turns on that well.

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David Condos / Harvest Public Media
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Each time Oakley turns on its well that is over the limit for nitrates, the town receives this warning notice from the state to post in local restaurants and businesses.

The town plans to build a filtration plant, but even if all goes well, that likely won’t be up and running for two years.

And it has already doubled water rates to prepare for the cost. Huffman said monthly water bills in Oakley are now between $70 and $80. That’s higher than the average bill in much larger cities, such as Wichita ($52) and Lawrence ($58).

Oakley could try to push back against the regulations or try to find a temporary solution — like drilling a new well in a spot where nitrate concentrations are lower — that could buy some time.

But Huffman said that as nitrate levels rise regionally, it’s going to keep getting harder to find wells that are under the limit. And if the town doesn’t bite the bullet now, he’s worried it’ll only cost millions more to build a treatment plant in the future.

“It’s not gonna be cheap, but it’s cheaper than not doing nothing at all,” Huffman said. “It’s just not gonna get any better.”

David Condos is the western Kansas correspondent for the Kansas News Service and High Plains Public Radio, based in Hays, Kansas.
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