Safe drinking water symposium next week in Des Moines


screen-shot-2017-08-21-at-1-02-58-pm
Jenna Ladd| September 14, 2017

Water quality has been a growing concern for many Iowans in recent years, primarily due to nitrate runoff from agricultural fields frequently exceeding the EPA’s safe drinking water limits. A safe drinking water symposium will be held next Thursday and Friday, September 21 and 22 in Des Moines to unpack this issue and many others.

Challenges to Providing Safe Drinking Water in the Midwest” will feature Iowa-based and nationally-recognized speakers and discussion panels related to local, regional and national water quality issues. A few of the topics to be discussed are the Health Impacts of Nitrate in Drinking Water, Drinking Water Treatment Concerns, New and Emerging Drinking Water Threats, and Communicating with the Public on Drinking Water Issues.

The one-and-a-half-day event is co-sponsored by several centers at the University of Iowa, Drake University, the University of Northern Iowa as well as the Iowa Association of Water Agencies, and the Central Iowa Drinking Water Commission.

The event, which will be held at the Drake University Shivers Facility, is open to the public. Additional information regarding agenda, registration, hotel, and parking is available at https://cph.uiowa.edu/ehsrc/drinking-water-symposium-2017.html.  Alternatively, call (319) 335-4756 to speak with an organizer.

What: Challenges to Providing Safe Drinking Water in the Midwest: A Symposium

When: September 21 from 8 am to 5 pm, September 22 from 8 am to 12 pm

Where: Drake University, Shivers Facility, Des Moines

Wildfires bring smoke to Iowa


OLYMPUS DIGITAL CAMERA
Smoke from a wildfire this May billows over a local road. (flickr/Michael Lusk)
Jenna Ladd| September 5, 2017

A yellowish haze blanketed most of eastern Iowa this Labor Day weekend thanks to wildfires in the western U.S. and Canada.

Wildfires throughout Montana, Manitoba and Saskatchewan are credited with much of this weekend’s smoke. Just this Sunday, evacuations were ordered for Glacier National Park in Montana and 140 campers were rescued from a smoldering forest on Sunday in Oregon.

As the climate changes, wet areas become wetter and dry areas become drier, allowing for longer wildfire seasons in many parts of the western U.S. According to the Union of Concerned Scientists, compared to the 1980’s, wildfires now last nearly five times as long, occur almost four times as often and burn more than six times the land area on average.

National Weather Service meteorologist Dave Cousins said that this weekend’s haze cut visibility at Davenport Municipal Airport by two and a half miles.

A report out of Dubuque revealed that the Air Quality Index (AQI) in the area is moderate to unhealthy for individuals sensitive to poor area quality.

On The Radio – Global sand shortage presents environmental problems


32970975780_ab2aa739cb_o
What was once a sand mine sits abandoned in Rangkasbitun, Indonesia. (Purnadi Phan/flickr)
Jenna Ladd| August 21, 2017
This week’s On The Radio segment discusses how the international sand shortage is leading to the degradation of waterways.

Transcript: A global sand shortage is having detrimental impacts on waterways.

This is the Iowa Environmental Focus.

The demand for sand has skyrocketed in recent years due to rapid urbanization worldwide. Sand is used to make the concrete and asphalt for every new building, road, and residence. More than thirteen billion tons of sand were mined for construction last year, with 70 percent going to Asia.

At present, sand is being extracted too fast for natural systems to replenish. To keep pace with exploding demand, sand miners are dredging lakes and rivers, chipping away at coastlines and destroying entire small islands. Sand extraction in rivers often deepens the channel, making bank erosion more likely. Similarly, when miners remove sediments, they often also remove plant life, which can have adverse impacts on aquatic food chains.

More wealthy western countries are beginning to use sand alternatives. For example, asphalt and concrete can be recycled and crushed rock can be used instead of sand in some cases.

For more information, visit iowa-environmental-focus-dot-org. From the UI Center for Global and Regional Environmental Research, I’m Betsy Stone.

Lyme disease more common due to climate change


9938173004_8aa4c9d8bb_o
Deer ticks thrive in hot and humid forested areas. (flickr/Joslyn Gallant)
Jenna Ladd| August 17, 2017

As temperatures and humidity rise in the United States, conditions are becoming more favorable for disease-carrying deer ticks.

The U.S. Environmental Protection Agency (EPA) reports that climate change has expanded the geographical range of ticks. Deer ticks specifically are most active when temperatures are above 45 degrees Fahrenheit and humidity is at least 85 percent. As temperatures and humidity rise in many parts of North America, so too are tick populations. The EPA reports that the incidence of Lyme disease in the U.S. has doubled since 1991.

The Northeastern U.S. has experienced the sharpest increase Lyme disease transmission. This part of the country is becoming more humid, making conditions better for ticks to emerge from the ground and latch onto hosts. New Hampshire, Maine, and Vermont have seen the largest spike in Lyme disease incidence since 1991, followed closely by Delaware and Massachusetts. On average, the EPA reports, these states now see 50 to 100 more cases per 100,000 people than they did in 1991.

In the future, deer tick populations are expected to double in the U.S. and become up to five times more numerous in Canada.

lyme-figure1-2016
Incidence of Lyme disease per 100,000 people. (EPA)

End-of-summer means more fish kills statewide


The end of the summer is when fish are most vulnerable to changes in their environment, so even a small amount of pollution can cause major fish kills in Iowa’s waterways. (flickr/AgriLife Today)

The state Department of Natural Resources warns Iowans to consider how fish are affected when using chemicals and fertilizers.

The end of the summer is when fish are most vulnerable — temperatures are high, and dying and decaying plant life reduce dissolved oxygen in the water. Fish and other aquatic wildlife are stressed, meaning pollution can lead to more fish kills.

In 2016, the DNR reported 15 fish kills, 11 of which occurred in the latter part of the summer, after July 15. In the last two weeks, the DNR has investigated four fish kills around the state.

The DNR reminds farmers and homeowners that what they put on their fields or lawns will wash into waterways, where it could harm wildlife. Even a small amount of a chemical can cause serious damage.

“We have received several reports of small summer fish kills at many lakes, ponds, and a few streams throughout Iowa,” said Chris Larson, fisheries supervisor for the DNR in southwest Iowa, in a press release. “We have also had some fish kills caused by pollutants.”

Rarely, however, will all of the fish in a single body of water die at once. Usually the ecosystem can bounce back from a fish kill and balance its population again within a few years.

Farmers and homeowners can prevent pollution-caused fish kills by not applying chemical fertilizer or manure before it rains, and following disposal instructions on pesticide labels.

On The Radio – Kent Park Lake sees improvements


Iowa DNR officials hope to remove the lake from the Impaired Waters List. (Iowa Water Science Center)

This week’s On The Radio segment provides details about restoration and improvement projects at Kent Park Lake in Johnson County.

Jenna Ladd | August 7, 2017

Transcript: The Iowa Department of Natural Resources is on track with its plans to improve water quality and recreational opportunities at Kent Park Lake in Johnson County.

This is the Iowa Environmental Focus.

In partnership with the Johnson County Conservation Board and Stanley Consultants, Iowa DNR plans to wrap up the first phase of park improvements this fall, which included restoring and constructing catch basins, adding ADA complaint facilities and installing bio-retention cells to keep storm water run-off from entering the lake.

Kent Park Lake was drained this spring in preparation for lake restoration projects. In the second phase, DNR plans to remove sediments from the lake basin, reshape parts of the bank and lake basin and add fish habitat. According to a press release from the department, the project’s aim is to remove the lake from the Iowa DNR Impaired Waters List and to provide more recreational activities for park visitors.

Project officials held a public meeting last month at Kent Park to discuss the preliminary plans for phase two with local residents.

For more information about the project, visit iowa-environmental-focus-dot-org.

From the UI Center for Global and Regional Environmental Research, I’m Betsy Stone.

Wildfires become more common and intense as Earth warms up


lodgepole_complex
Smoke billows from the Lodgepole Complex wildfire of eastern Montana. (Montana Public Radio)
Jenna Ladd| July 26, 2017

A wildfire as large as New York City is currently ripping across eastern Montana, and experts say climate change making fires like these larger and more common.

As climate change takes hold, wet areas are becoming wetter and dry areas are becoming drier. Rising temperatures in spring and summer months mean that soils are remaining dry for longer, which makes drought more likely, thereby lengthening the wildfire season.

According to the Union of Concerned Scientists, wildfires have become more likely and more intense since the 1980’s. They last nearly five times as long, occur almost four times as often and burn more than six times the land area on average.

Moving forward, residents of fire-prone regions can expect the wildfire season to lengthen. In the southwestern U.S., scientists predict wildfire season will increase from  seven months to twelve months.

The economic impacts of wildfires are staggering. Since 2000, the U.S. Forest Service has spent more than $1 billion on fire suppression in one fiscal year on two occasions. During the first decade of the 21st century, wildfires cost an average of $665 million per year in economic damages.

In their full report on this issue, the Union of Concerned Scientists say it’s not too late for humans to slow the course of climate change. They write,

“The global temperature is increasing and the climate is changing due to the greenhouse-gas emissions we have already produced, leading to a likely rise in the incidence of wildfires. But it is not too late. What we do now has the power to influence the frequency and severity of these fires and their effects on us.”