Dry wells, salty crops forced Ottawa County to confront groundwater crisis

The dry wells, not more than 15 miles from Lake Michigan, were the first alarm bells for Ottawa County.

In 2007, wells supplying drinking water to new homes in the Highland Trail subdivision of Allendale Township started to sputter and then blink out. Allendale is in the north of Ottawa, which has been the fastest-growing county in Michigan since at least 2010. The expansion is propelled by proximity to Grand Rapids, the economic engine of western Michigan and one of the nation’s highest-growth metropolitan areas.

Then came complaints from farmers. Leaves on their soybeans had been “burned” – turned brown and crispy on the edges – because their irrigation water, pumped from deep wells, was becoming too salty. Half farmland, the county has one of the most diverse agricultural operations in the state, with apple orchards, flower nurseries, blueberry patches and row crops like corn and soybeans.

Those incidents raised eyebrows of county leaders, said Paul Sachs, then the assistant director of Ottawa County’s Planning and Performance Improvement Department.

The stories they heard sounded more like those from Arizona or California or the Texas Panhandle, dry regions where scarcity reigned, or Hawaii or Miami, where fresh groundwater is precariously balanced atop saltier layers. Leaders soon realized that something was amiss in a land of supposed plenty.

“The mindset was that because we’re on the shore of the Great Lakes water is pervasive. But even here water conservation is important,” said Sachs, who is now the department director.

“We’re not an arid state, but we still have water challenges,” he added.

Those challenges are better defined now thanks to a six-year study from Michigan State University that was commissioned in response to those incidents a decade ago. The study, which concluded earlier this year, found that Ottawa County faces a two-headed emergency: declining aquifers that are becoming more polluted with salts and nitrates.

And it’s not just Ottawa. The study identified three dozen other Michigan counties where intensive groundwater pumping will invite saltier water to invade from below.

“Michigan’s fresh groundwater is sitting on a pool of brine underneath,” said Shu-Guang Li, the Michigan State University researcher who led the study. “We talk about the Great Lakes, but deep underground, it’s salty.”

The groundwater emergency is a homegrown challenge, but one that Ottawa County is not dodging. Allendale Township instituted a six-month moratorium last month on new housing developments that plan to use wells. The county, meanwhile, is developing a strategy that will convert findings from the Michigan State study into actions to protect groundwater.

Depletion worsens pollution

The study, funded by the Ottawa County Planning Commission and the Michigan Department of Agriculture and Rural Development, unfolded in two parts.

The first report, published in 2013, sketched an outline of the problem, which links water-use behavior at home and on the farm with the county’s underlying geology.

It was clear from existing well measurements that an increasing reliance on groundwater was depleting deeper aquifers and causing groundwater quality to deteriorate. Well water, in certain areas, was becoming too salty for crops and off-putting to drink.

The first study also noted elevated nitrate levels in shallow groundwater. In a half dozen hotspots, researchers found nitrate concentrations two to five times higher than the U.S. Environmental Protection Agency standard for drinking water. High nitrate levels increase the risk of infant death from methemoglobinemia, known more commonly as blue baby syndrome. Recent studies that traced health outcomes over decades have also shown a higher risk for cancers of the bladder, colon, thyroid and kidneys at even lower nitrate exposures than the EPA standard.

Nitrate levels at the hotspots did not vary much over time, suggesting that the sources, most likely farms and septic systems, were “persistent and prevalent.”

The second report, published in March of this year, revealed a curious connection between groundwater use and the rising concentrations of chloride, or salts, in well water.

A layer of sandstone called the Marshall aquifer runs beneath Ottawa County and most household and farm wells draw water from it. Below the fresh water layer are briny waters. When water levels in the Marshall aquifer drop, briny water is pulled upward, accelerating natural upwelling that occurs. Water levels in wells south of Allendale dropped, on average, 45 feet in the last five decades and the groundwater has grown saltier.

“Essentially, if you go too shallow you have the nitrate problem,and if you go too deep you have the chloride issue,” Li said. “That’s the dilemma.”

Currently a quarter of Ottawa residents use a household well, according to the U.S. Geological Survey.

Making matters worse, an impermeable clay layer above the Marshall formation impedes rain from percolating downward to flush out the salts.

Based on similar geology, the research team identified three dozen other low-elevation counties in southern and eastern Michigan that are at risk of chloride contamination from groundwater pumping. Most at risk are the counties along Saginaw Bay, they found.

“This is not a problem that is limited to Ottawa County,” Li said. “Ottawa County is just more proactive.”

Sachs and colleagues in the planning department will use the study to develop a groundwater protection plan. Included will be a thorough review of county policies and regulations on the placement and design of wells and septic systems. Additional studies will take place. Grand Valley State University will survey the county for land where the soils are most suitable for recharging the aquifer. Sachs said that the county could preserve that land from development.

Education and outreach to local communities will be essential as well, to garner support.

“Conservation needs to be practiced by everyone,” Sachs said. He’s thinking about ways to incentivize homeowners to collect rainwater because “using drinking water for lawns may not be best.”

A draft plan will be ready in the spring of 2019, he said.

New policies about land use

Even before the plan is in place, the threat of groundwater depletion is swaying county land-use decisions.

In August, Allendale Township passed a six-month moratorium on new housing developments that are not connected to public water and sewer.

The moratorium was partly spurred by concerns over Trader’s View, a 52-unit housing development. Neighbors told the township planning commission that they worried about their wells going dry. They cited Highland Trail as a cautionary tale. (To fix that problem, Allendale ended up spending $2.6 million to extend public water to Highland Trail. Homeowners are repaying the cost via assessments.)

Trader’s View developers ended up reversing course. Instead of 52 additional wells, Trader’s View homes will hook into Allendale’s water system. Like most public systems in the county, Allendale Township delivers Lake Michigan water to customers, which does not have the same supply and pollution risks as wells.

Adam Elenbass, the township supervisor, said the moratorium allows town officials to consider what protections need to be put in place for groundwater.

That’s the type of thinking that county administrators hope will spread.

“It’s not a problem we can continue to ignore,” Sachs said. “If we continue to operate with blinders on, we’ll have a significant challenge down the road.”

About this project

Bridge Magazine teamed with Detroit Public Television and Circle of Blue, a Traverse City-based nonprofit, for this special report on the multiple threats to Michigan’s groundwater. Brett Walton is a correspondent for Circle of Blue. The reporting partners will host a live broadcast to discuss the report and similar threats worldwide at 1 p.m. Oct. 1. To register, follow this link.

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Comments

Le Roy G. Barnett
Wed, 09/26/2018 - 9:07am

The next crisis may well be the liquids from fracking making their way upward through geologic strata and into the potable water-table zone. Pogo told us this would probably happen, but we didn't listen.

Dave Wolf
Wed, 09/26/2018 - 9:10am

I was more than mildly surprised that this article made no mention of Nestle's significant drawing of water from the aquifer for sale and export. I recognize that their operation is but one of the "straws" that are stuck into Michigan's water resources, but it is a major consumer of groundwater, among many, that combine to create potential problems for everyone in the state.

Zeke
Wed, 09/26/2018 - 9:28am

I'm curious. Why weren't the bottling companies deep well extraction of millions of gallons of our water daily an issue within this problem. It appears according to another Bridge report today that the bottling companies are responsible for pulling up salinity levels into the shallower ground water aquifers which describes the problems this article addresses. Further, the vast millions of gallons per day they pull could affect a drawing down of the normal ground water levels.

Jim Malewitz
Wed, 09/26/2018 - 10:48am

Hi, Zeke. Thanks for reading and for offering feedback. 

Not sure which other Bridge report you're referencing. Our stories today examine groundwater contamination problems, and we sought to shed light on some of the lesser known areas of concern. 

Jack
Wed, 09/26/2018 - 2:25pm

Zeke and Dave Wolf: this particular problem is limited to aquifers in certain geographical areas and geological settings. The area & geology that Nestle pumps from (and more importantly, the thousands of other farm irrigation wells that dwarf Nestle) is completely different from that of Ottawa county and is not showing any signs of such overuse problems.

Zeke
Wed, 09/26/2018 - 8:27pm

Say Jack - the farmers use our water creates a return to the state of revenue it creates. Whereas Nestle pulls our water but does not create a return to our state - except a token miserly payment to the state for the millions of gallons of water they take away for their own profit. That contract arranged for by the Republicans needs to be voided and renegotiated for fair cost and to eliminate the deep saline contamination of the less deep pools of ground water that farmers and the general population requires.
Now I am not a scientist but there is "X" amount of ground water in Michigan so Nestle's pulling millions of gallons daily must reduce the overall total in Michigan. The quantity remaining isn't self sustaining when that draw down is in direct conflict with the past availability.

Jack
Fri, 09/28/2018 - 11:47am

Zeke, Nestle's industrial use of water is no different than the countless other industries that consume Michigan water for their own profit. It creates a return in revenue to the state just like agriculture and every other industry does. The token payment to the state that you refer to, and that is paid by all self-supplied industries (except for agriculture, by the way) is NOT a fee for the water. There is NO cost for water for anyone in this state. There are of course costs associated with the access to and delivery of water, however.
And please note that their is NO "contract" for Nestle, or any other company or industry, that was arranged by any political party in regards to Michigan water regulations. Current law was supported with virtually unanimous support (votes) in the legislature (i.e. both parties).
I do happen to be a hydrogeologist and you are exactly right that there is X amount of groundwater in Michigan, and that Nestle is pulling about 1 million gallons per day from that total. The amount that Nestle pulls is about 0.34% of the total that is consumed by all residents + industries in Michigan (about 300 million gallons per day). Please note that groundwater recharge rates in Michigan are estimated to be about 60.7 Billion gallons per day.

So yes, Nestle and all of our other withdrawals are having an impact - we collectively consume about 0.5% of the amount of groundwater that is replenished in Michigan each day. This does not take into account the amount of groundwater already underlying Michigan, which is about 220 Trillion gallons. So you can rest assured that our collective current groundwater withdrawal statewide probably falls into anyone's definition of sustainable. *NOTE that there are exceptions in specific areas and from specific aquifers, such as the portion of Ottawa County highlighted in this article. Again, that area is vastly different than the areas that Nestle pumps from, and from the areas that much MUCH more pumping than Nestle does occurs for agriculture and other industries.

But don't take my word for it or anyone , please look up all these facts and figures for yourself!! They are all out there and available if you do some homework.

Don
Wed, 09/26/2018 - 5:39pm

remember YOU voted republican that is letting Nestles Ice Mountian pump MILLIONS of gls of water out of Michigan<<<<<<<<<<< Keep voting republican help destroy our earth!!!

Phil Bednarek
Sat, 09/29/2018 - 8:03am

Really sad when a report is one sided. This reporter didnt mention that the sample study data was found to be flawed. Plus the soybean farmer actually forced the driller to go deeper against his recommendation. And the fact that Ottawa county has refused to address the lack of drainage recharge to help replentish groundwater. Instead they put a moratorium on drilling, their only competitor supplying water. Big brother pounding on us.

Dan Cole
Mon, 10/01/2018 - 1:08pm

In what way do you think the study data is "flawed"?? I have reviewed the data, and it is NOT flawed.

Why did the farmer "force" the driller to take more of his money and drill a deeper and more expensive well??

And how do you suggest Ottawa County should "address the lack of drainage recharge"? Note that the Marshall Aquifer is covered by thick layers of clay. Natural recharge takes perhaps thousands of years to replenish it, and artificial recharge is an expensive fantasy in these parts.

Yes, mandatory city water / moratorium on drilling new wells is very common throughout the country, and is borderline unconstitutional- most cases the city has won, a few cases have been won by the private well owners. In the case of Allendale however, it was absolutely the right move scientifically and in no way was it simply a money grab.