Your Drugs in Your Water

  • Pharmaceuticals and other toxins have been found in lakes like this one, Lake Champlain. (Photo by Kinna Ohman)

Less than ten years ago, the U.S. Geological Survey found household drugs and
chemicals in almost every body of water they sampled. Each year since then, at least twenty
studies come out showing these chemicals can affect the hormone systems of wildlife –
and some studies have begun to look at effects on humans. Kinna Ohman reports that,
despite all this, little has been done to address the issue:

Transcript

Less than ten years ago, the U.S. Geological Survey found household drugs and
chemicals in almost every body of water they sampled. Each year since then, at least twenty
studies come out showing these chemicals can affect the hormone systems of wildlife –
and some studies have begun to look at effects on humans. Kinna Ohman reports that,
despite all this, little has been done to address the issue:



Every major water body in the United States, whether it’s a river, lake, or wetland,
probably has at least one scientist keeping an eye on it. Lake Champlain is no exception.
This large lake, forming much of the border between Vermont and northern New York,
has its share of scientists… and Mary Watzin is one of them.


Watzin’s the director of the Rubenstein Ecosystem Science Laboratory in Burlington,
Vermont. She’s been studying how human pollution and activities impact the lake’s fish,
birds, and other water wildlife.


Watzin’s been around long enough to see quite a few of the big pollution problems resolved,
but you can’t help noticing some frustration when she talks about the latest issue:


“We’re cleaning up our act, at least with PCBs – we’re working on mercury – and
then there’s all this new generation stuff coming along.”


This new generation of pollutants includes the active parts of household chemicals and
drugs which have the potential to impact the hormone systems in wildlife. They’re in
detergents, cleaning products, and many types of drugs such as antidepressants, steroids,
and even birth control pills. Chris Hornback is with the National Association of Clean
Water Agencies:


“They’re coming from consumer products. In the case of pharmaceuticals, they’re
coming from drugs that our bodies aren’t completely metabolizing. Or, in some
cases, from unused pharmaceuticals that are being flushed down the toilet.”


And the problem is, once these drugs and chemicals leave our house, many of them aren’t
filtered out at wastewater treatment plants. Treatment plants were not designed to handle
these types of pollutants. So any lake or river which receives treated wastewater can also
receive a daily dose of these active chemicals.


Because these pollutants can number in the hundreds, just how to study them is under
debate. Mary Watzin says the old way just doesn’t work anymore:


“The classic way to examine one of these compounds is just to test it by itself. But
the fish aren’t exposed to these things by themselves, because they swim around in
the general milieu of everything that gets dumped out.”


But looking at how mixtures of household chemicals and drugs affect fish and other
wildlife can bring up more questions than answers. Because of this, Pat Phillips, a
hydrologist with the U.S. Geological Survey says we might want to concentrate on just
keeping these pollutants out of the environment:


“One of the things we see is that we see mixtures of many different compounds
coming into the wastewater treatment plants and coming into the environment.
And its very difficult to figure out what effect these mixtures have. But if we can
remove some of them, that makes a lot of sense.”


In the past, when the issue was industrial toxins, the solution was to control these toxins
at their source. This is because wastewater treatment plants weren’t made to deal with
industrial toxins in the same way they’re not made to deal with household drugs and
chemicals. But now, Chris Hornback says controlling this new generation of pollutants at
their source just isn’t practical:


“A lot of the substances that we’re talking about now including pharmaceuticals
and other emerging contaminants are coming from the households. So, those
sources are much harder to control. You can’t permit a household. A wastewater
treatment plant can’t control what a household discharges so that’s where public
outreach, and education, and pollution prevention efforts come into play.”


These efforts are really only starting. Some states have begun pharmaceutical take-back
programs to keep people from flushing unused medicines down the drain, but
participation is voluntary.


Everyone involved agrees that in order to solve this problem, it’s going to take people
thinking about what they’re sending down their drains. But just how to broach this
somewhat private topic is yet another question.


For the Environment Report, I’m Kinna Ohman.

Related Links

Breast Cancer Dragon Boat

  • The Dream Team of breast cancer survivors paddles away. (Photo courtesy of the Dream Team)

It’s hard to imagine you would be glad to have breast cancer.
But some women are now saying getting the disease has changed
their lives for the better. These crazy-sounding women are finding new life in a sport called
dragon boat racing. Julie Grant brings us their story:

Transcript

It’s hard to imagine you would be glad to have breast cancer.
But some women are now saying getting the disease has changed
their lives for the better. These crazy-sounding women are finding new life in a sport called
dragon boat racing. Julie Grant brings us their story:


(Sound of women talking and laughing)


The sun is just beginning to set on another weekday as twenty middle-aged women start
gathering near a boathouse. They’re all wearing bright pink racing jerseys.
And they’ve all survived breast cancer.



A few work together to pull the canvas cover off their baby, a long, thin wooden boat.
This is what’s known as a Chinese dragon boat. The front end is a dragon’s head, with a fierce
red face and green scales running down the dragon’s neck. Dragon boat racing started 2500
years ago in China. Some say it was believed to ward off evil and disease.


At this Midwestern boathouse, these breast cancer survivors give thanks for their chance to
paddle a dragon boat. They get in, sit in pairs, and push off. There’s still some fun and laughter,
but most of the women grimace as they attempt to synchronize their race-strokes.


(Sound of prayer)



They get in, sit in pairs and push off. There’s still some fun and laughter, but most of the women grimace as they attempt synchronize their race strokes.


In a race, paddlers stroke about 75 times per minute. That’s a big change for breast cancer
survivors. They used to be told not to use their upper bodies. No carrying groceries, babies, or
vacuuming. It was thought they could get lymphedema, a swelling of the arms. But testing on
women in dragon boating has shown paddling is actually beneficial.


Paddler Lynn Fritz has had two bouts with breast cancer over the past ten years.
Fritz says she’s talked about her feelings with a support group to help her deal with the cancer.
But she loves dragon boating, she says, because it’s helping her get on with her life:


“This was something that I thought, this is fun. Instead of just, gotta introduce myself and say when I
had cancer, don’t worry you’ll get through it. We don’t talk about it out here, out on the lake it’s
just peaceful. I needed it, bad.”



The “Dream Team,” as they’re known, has started competing in dragon boat races. It’s one of
the fastest growing water sports worldwide. Some of the other teams are also exclusive to breast
cancer survivors. The Bosom Buddies and Abreast in a Boat are two Canadian teams. But most
dragon boaters are just regular paddling competitors. The women have to be strong to keep up.
The Dream Team, in only their first year on the water, won one of their races.


(Sound of boat)


Jessica Madder remembers watching dragon boaters from the dock of her vacation home in Nova
Scotia. She always admired the women. She remembers the summer of 2005, toasting them
with pink champagne as they paddled by:


“Little did I know that the following summer, I was going to arrive home and have the birthday greetings that I had developed breast cancer that year and I had been through all the treatments. In fact, I wasn’t even two
months out of treatment when I first got in a dragon boat. So that was my first introduction.”


Madder paddled all that summer in Nova Scotia. Then she came back to her home in Ohio, and
went to see her doctor:


“His nurse greeted me for my appointment and she said, ‘How are you?’ Because of course
she had seen me as a recovering patient in the spring. How are you? And I said, fantastic! I’m so healthy, I’m a
summer athlete. And I just bounced.”


When the doctor saw how well she was doing, he wanted that treatment for the rest of his
patients, so he bought the Dream Team boat and life jackets. Madder didn’t know if she could
recruit 22 women to form a full paddling team. She quickly had 72 interested. She gets teary
when she talks about them:


“I still remember Linda saying to me, ‘I’m a survivor for 11 years and this is the first time the
loneliness of cancer has left my heart.’ I mean, how am I not gonna cry? And then they say thank you. I stand there, and I am so
truthful, and say, look, I did this for myself. I just wanted to paddle a dragon boat.”


Madder jokes with her husband, she wishes she’d been diagnosed ten years earlier. She’s
hoping she’s got enough time left to start a dragon boat team on every waterway in her state.


For the Environment Report, I’m Julie Grant.

Related Links

Warming to Change Great Lakes Ecosystem?

Some researchers say global warming will impact fish habitat in the
Great Lakes. Chuck Quirmbach reports:

Transcript

Some researchers say global warming will impact fish habitat in the
Great Lakes. Chuck Quirmbach reports:


Some scientists have projected that more global warming will mean less
rain and snow falling into the Great Lakes and the continuation
of low water levels.


Researcher Brian Shuter is with the Ontario Ministry of Natural
Resources. He says if the projection comes true, there will be
more stress on the millions of Great Lakes fish:


“I mean the space for fish to live in is just gonna shrink and the less
space there is, the less fish there will be.”


Shuter also anticipates higher summertime water temperatures and less
ice cover in the lakes. That’s a change that could lead to more warm
water fish like bass and fewer of the cold water fish like salmon
and trout that people like to eat.


Shuter says the change could also promote the growth of invasive
species that favor warmer water temperatures. So, he encourages tighter
controls on invasives and more water conservation programs.


For the Environment Report, I’m Chuck Quirmbach.

Related Links

Algae Blooms on the Rise

Algae blooms in lakes and oceans can be toxic to people and wildlife. Federal researchers say these blooms have become much more common and
widespread over the last 30 years. Rebecca Williams has more:

Transcript

Algae blooms in lakes and oceans can be toxic to people and wildlife.
Federal researchers say these blooms have become much more common and
widespread over the last 30 years. Rebecca Williams has more:


Researchers say harmful algal blooms are happening along all the
coastal states. They’re also happening more often in freshwater lakes.


Quay Dortch is with the National Oceanic and Atmospheric
Administration. She’s an author of a new government report. She says
some kinds of algae can make shellfish unsafe to eat:


“When the toxin levels get high enough to be a problem for human
consumption they have to close the shell fisheries, sometimes these
discolor the water or they make water smell, or they can produce
aerosols that cause irritation when you breathe.”


Dortch says humans are a likely cause of the increase in algal blooms.
Excess nutrients from farming, lawn fertilizers and sewer systems fuel
algae growth.


The report estimates these blooms cost the US economy 82 million
dollars a year.


For the Environment Report, I’m Rebecca Williams.

Related Links

Funding for Clean Water Lacking

Cities and states across the country will need to spend hundreds of billions of
dollars to maintain and improve the nation’s sewer and water systems. A new
report says these communities are not getting enough help from the federal
government. Chuck Quirmbach has more:

Transcript

Cities and states across the country will need to spend hundreds of billions of
dollars to maintain and improve the nation’s sewer and water systems. A new
report says these communities are not getting enough help from the federal
government. Chuck Quirmbach has more:


A study by the consumer group Food and Water Watch says the federal share of
clean water infrastructure spending has shrunk from 78 percent 30 years ago to
three percent today.


The group says it’s time to create a national Clean Water Trust Fund, potentially
from fees or taxes. Wenonah Hauter is executive director of Food and Water
Watch. She acknowledges the Bush Administration has been focused on funding
the Iraq war:


“Well, I think it’s a matter of priorities and I that having clean and safe and
affordable drinking water for future generations has to be a number one priority.”


Hauter says without more national funding, people will continue to pay more in
property taxes and storm water assessment fees.


For the Environment Report, I’m Chuck Quirmbach.

Related Links

Epa Cites Improved Fuel Economy

The Environmental Protection Agency says cars and trucks are starting to get better gas
mileage. That comes after a long period of worsening fuel economy.
Dustin Dwyer reports:

Transcript

The Environmental Protection Agency says cars and trucks are starting to get better gas
mileage. That comes after a long period of worsening fuel economy.
Dustin Dwyer reports:


The EPA says over the past three years, average vehicle fuel economy has improved by
about five percent, but that’s a small reversal after 20 years in which gas mileage only got
worse.


Jim Kliesch is with the Union of Concerned Scientists. He says the problem is that
getting more miles per gallon has not been a priority for automakers:


“The industry has been improving their vehicles for years. It’s just that they’ve been
applying their technical innovations to performance and not to fuel economy.”


Automakers say they’re now working to make cars more fuel efficient. In part that’s
because they have to under new fuel economy rules for trucks. And lawmakers in
Washington are debating new rules that could force even higher fuel efficiency.


For the Environment Report, I’m Dustin Dwyer.

Related Links

Old Stuff Gets New Life

  • Tennis ball art made of 160 balls. Some of the balls can be moved around in order to create different formations. (Photo courtesy of Britten Stringwell)

Everyone has stuff. Probably too much stuff. Stuff you don’t use anymore, stuff that’s just
gathering dust in a box somewhere. Sure, you could recycle it. Or, as reporter Jennifer
Guerra discovered, you could turn some of that stuff into art:

Transcript

Everyone has stuff. Probably too much stuff. Stuff you don’t use anymore, stuff that’s just
gathering dust in a box somewhere. Sure, you could recycle it. Or, as reporter Jennifer
Guerra discovered, you could turn some of that stuff into art:


Vivienne Armentrout has only the essentials in her house. A table, some chairs, a
sideboard. Maybe a vase with fresh cut flowers from her garden. But that’s it. No clutter,
no knick knacks. Armentrout doesn’t like to have stuff lying around her house. So she
gets rid of it. But she doesn’t just throw it out or recycle it:


“The thing is, it’s easy to recycle. You just load up everything take it down to drop off
center and put it in the appropriate bin. And that’s okay for material recovery. But a lot of
objects have a real use still and that would be a waste. ”


Like fabric, for example. Armentrout says there’s nothing inherently wrong with
recycling old neck ties or curtain remnants. But if you go that route, the material will
probably just end up being turned into stuffing for seat cushions:


“But I think making them into a beautiful piece of art is a much better use.”




Now you might be thinking to yourself, okay, sounds like a cool idea…but I’m not an
artist! That’s ok, you don’t have to be. That’s where someone like Britten Stringwell
comes in. Stringwell calls herself a…


“A creative, inspirational doer…or artist.”


Stringwell and Armentrout live in the same town. But they never met until Armentrout
read an article about Stringwell in a local paper. Stringwell had some art work on display
at a coffee shop, so the paper was doing a little bio on her. When Armentrout read that
Britten Stringwell used recycled materials in her pieces, Armentrout immediately went to
work. She went through boxes of stuff she had in her attic and in her basement. Armentrout
invited Stringwell over to her house and together, the two sifted through old metal gears, antique
furniture knobs and wooden beads.


Some of the items Stringwell took home with her. Some she didn’t. Stringwell’s quick to
point out that she doesn’t just take anything that’s handed to her:


“I don’t like to keep collecting things, but if I can help to inspire other people who
would use them, too, is really important.”


I think that’s key to understanding what drives Stringwell to do what she does. She likes to make connections, she likes to form relationships with people.


People – strangers – will read or hear about Stringwell and they’ll invite her into their
house. Virtual strangers! Sometimes they have her over for tea, maybe a light snack. And
then, they just talk. Mostly, about all the stuff they’ve got in their basement and their attic,
and it’s those stories – the stories BEHIND the items and not the actual items themselves – that
Stringwell says inspires her the most:


“More recently, I guess I’ve been interested in not talking so much when I enter a space,
but kind of seeing where the person leads me. And just kind of finding out what’s
important to them or what story comes up and why does this object inspire me more
or them more…”




For example, that’s how Stringwell discovered someone’s box of old tennis balls. An
older woman invited Stringwell into her home one day. The two walked through her
basement, where there were boxes of stuff everywhere. When they came to the box of
tennis balls, the older woman went on and on about her love of the game, and about how she
and her partner used to play tennis all the time when they were younger.


So, Stringwell took those tennis balls home with her and she gave them new life. She put
them in an art piece. Tennis balls that otherwise would have stayed in a box in a
basement or ended up in a landfill somewhere. Stringwell created an interactive composition of
sorts. So within the composition, the balls can be arranged by the viewer to form different
shapes and patterns:


“What’s important is that it becomes this new, physical game. What was important
to them about it. They might not be as physical as they were when they were
younger and playing tennis, but now they can take these things out and play a
matching game and they will change it around and recreate it.”


Of course not everyone is a creative inspirational doer, like Britten Stringwell. But that doesn’t mean you can’t reduce, reuse and recycle. That part’s easy. Everybody gets that. And maybe, while you’re at it, you’ll start to look at all the stuff around you in a different way. Maybe you’ll find your own way to recreate, repurpose and reimagine.


For the Environment Report, I’m Jennifer Guerra.

Related Links

Virus Killing Great Lakes Giants

  • Fishing guide Rich Clarke of Clayton, NY, is famous for muskie hunts. He's worried so many adult muskies are falling victim to VHS. (Photo courtesy of Rich Clarke)

Fall is when avid anglers flock to the Great Lakes for one of the most
challenging freshwater catches: the muskellunge, or muskie. Some call it
“the fish of 10,000 casts.” This year’s muskie season is clouded by bad news
of a new fish disease and invasive species crowding muskie habitat. David
Sommerstein reports scientists are watching this top-of-the-food-chain
species carefully:

Transcript

Fall is when avid anglers flock to the Great Lakes for one of the most
challenging freshwater catches: the muskellunge, or muskie. Some call it
“the fish of 10,000 casts.” This year’s muskie season is clouded by bad news
of a new fish disease and invasive species crowding muskie habitat. David
Sommerstein reports scientists are watching this top-of-the-food-chain
species carefully:




It’s a cool afternoon as fishing guide Rich Clarke fillets the day’s catch:


“Went out, caught some northerns, a few bass, some jack perch. Had a
pretty good morning.”


Clarke’s specialty is hunting for muskies, 60 pound fish with a lot of fight:


“I mean, the rod screams, they yank, yank, and yank. It doesn’t come all that
often, but when it comes, it’s one of the most exciting things you’ll see when
you fish in fresh water.”


Clarke worries that magical hit might become even more rare. Since 2005,
several hundred of those prized muskies were found belly-up dead, victims
of viral hemorrhagic septicimia, or VHS.


(Sound of hose)


Clarke washes down his fillet table. He mutters VHS is just another non-
native organism threatening the muskie. There are already more than 180
invasive species in the Great Lakes-St. Lawrence River system:


“Everything from the goby to the , y’know, and weed species and all
sorts of stuff, spiny water fleas, you name it, all sorts of stuff that are not native to this
waterway that we have to deal with, and it changes the whole ecology.”


A new invasive species is found every six to nine months. Scientists can
barely keep up in understanding the impact on the native environment.




In a nearby bay of the St. Lawrence River in northern New York State,
Roger Klindt, John Farrell, and a crew drag a huge net through the water:


“We’ve got two people pulling it slowly through the vegetation just trying
to basically corral fish.”


This is called seining, getting a sample of all the fish that live here. Klindt
and Farrell have been doing this in the same marshy shallows for more than
20 years. And Farrell says what they’ve found this year is disturbing:


“Muskellunge numbers in the index are at their lowest levels on record since
we’ve been collecting data.”


Down from almost 50 in the spring spawning run of 2003 to just 4 this year.
Farrell’s a researcher with the State University of New York Environmental
Science and Forestry. He says this could be the result of VHS killing so
many adult muskies in their reproductive prime.




Yet another invasive species is also troubling, the round goby. It’s an ugly
little fish from Eastern Europe that breeds like crazy. Farrell and Klindt
count minnows flipping and fluttering in the seining net:


“15 black gins, 8 blunt nose, 5 spot tail.”


“I didn’t actually count things, I was just picking gobies.”


Farrell says they’ve found more round gobies in these marshes than ever
before:


“Which is a bit of a surprise to us.”


Now the muskie young have to compete with round gobies for food:


“How these species are going to respond to the presence of gobies is
unknown at this time, but they have high predation rates, they’re very
prolific, becoming extremely abundant, so the food web in this system is
shifting.”


This is what frustrates people who study invasive species. Once researchers
train their focus on one, like the fish disease VHS, another emerges to
confound the equation. Roger Klindt is with New York’s Department of
Environmental Conservation
:


“Change happens, y’know, nothing stays the same forever. But when we
have invasive species and exotic species come in, the change is often so
rapid that native species can’t adapt to it.”


That talk makes anglers nervous. Peter Emerson’s been fishing around here
for years. In fact, he participated in a catch and release program that brought
muskie populations back to health in the 1980s:


“There was a real bonanza, til this virus showed up. I’m hopeful they don’t
go extinct.”


Biologists expect adult muskies that survived VHS will develop resistance to
the disease. But they fear the next generation won’t inherit the immunity,
causing more die-offs of one of America’s most prized freshwater fish.


For The Environment Report, I’m David Sommerstein.

Related Links

Power Plant Tests Carbon Capture

  • A pipe has been connected to the flue gas duct at We Energies' coal-burning power plant near Milwaukee. The pipe will suck out a small amount of gas and treat it with chilled ammonia, allowing CO2 to be separated and captured. (Photo by Erin Toner)

Coal-burning power plants have done a lot to reduce
pollution that leaves their smokestacks. But the power
industry is not controlling the main greenhouse gas –
carbon dioxide. That could change in the next decade.
One utility is about to begin the first test ever of technology
to reduce CO2 emissions at power plants. Erin Toner
reports:

Transcript

Coal-burning power plants have done a lot to reduce
pollution that leaves their smokestacks. But the power
industry is not controlling the main greenhouse gas –
carbon dioxide. That could change in the next decade.
One utility is about to begin the first test ever of technology
to reduce CO2 emissions at power plants. Erin Toner
reports:


When you think about air pollution, you might think of
power plants with giant brick chimneys pumping dark
smoke into the sky. here’s not as much of that stuff being released
into the air as 30 years ago. That’s because power plants have added equipment to control certain types of pollution:


“Okay, just to give you an idea of what we’re looking at,
this big silver building is where all the particulate is
removed, we’re going from that toward the stacks, so
we’re looking at the discharge emissions control
devices…”


Ed Morris oversees environmental projects at We Energies’
coal-burning power plant in Pleasant Prairie, Wisconsin. In
the past few years, it’s installed equipment that’s cut sulfur
and nitrogen emissions by up to 95 percent. Now it’s going
after carbon dioxide, or CO2, the most prevalent manmade
greenhouse gas that no utility has yet controlled.


By the end of the year, the We Energies plant will begin the
first test in the country of a new technology called “carbon
capture:”


“We are designing the technology to achieve up to 90
percent CO2 removal.”


Sean Black is with Alstom, the company that designed the
process. It will inject chilled ammonia into a tiny stream of
boiler gas. This will theoretically allow the CO2 to be
separated and captured. The test will see how much can be
removed before the gas is sent up the chimney.


Black says after the test in Wisconsin, it’ll go on to a full-
scale demonstration at an American Electric Power coal-
burning plant in West Virginia:


“And that will provide the marketplace with the
credibility that this technology is ready for commercial
deployment.”


The coal-burning power industry is trying to get carbon
capture ready because it believes the government will soon
start regulating CO2 emissions.


Kris McKinney manages environmental policy for We
Energies, and its pilot CO2 program:


“Technology doesn’t exist today to capture, let alone
store, the CO2 emissions, reductions that would be
required in the event that federal legislation is passed.”


Power companies have been criticized for moving too
slowly on cutting CO2 pollution. Some environmentalists
say utilities could have been doing more earlier, but won’t
spend the money on new technology if they’re not required
to by the government.


We Energies’ Kris McKinney says they’re wrong about the
status of the technology, but right about the money. He
says that’s because the cost of adding the CO2 reduction
equipment has to be passed on to customers:


“Whatever happens has to happen over a longer period
of time…it needs to be thought out in a way that doesn’t
cause dramatic cost impacts, unanticipated cost
impacts.”


McKinney says rushing to add new pollution controls
would be a huge risk. And in the case of carbon capture,
he could be right.


The government’s
has raised concerns about the chilled ammonia process. A
report that has not been made public says 90 percent CO2
reduction has not happened in early testing, and might not
be possible.


It also says carbon capture could dramatically increase the
energy needed to run a power plant.


George Peridas is a science fellow with the
Natural
Resources Defense Council
, an environmental
organization:


“The publicity that this is receiving is disproportionate
to the actual results that they have achieved. And there
are fundamental scientific reasons to question whether
this can be done.”


Alstom, the company developing chilled ammonia carbon
capture, says it won’t comment on the government’s report
because it hasn’t been made public. Company officials do say they’re confident the technology will work. They’re predicting the full-scale process will be
ready to retrofit existing plants or to build into new ones in
five years.


If so, it’ll be one option for a power industry that’s under
increasing pressure – and likely government mandates – to
clean up its dirty legacy.


For the Environment Report, I’m Erin Toner.

Related Links

Epa to Regulate Bug Zapping Washing Machines

There’s a new generation of washing machines that use charged particles
of silver to kill bacteria. Rebecca Williams reports the Environmental
Protection Agency says it’s going to regulate the machines as
pesticides:

Transcript

There’s a new generation of washing machines that use charged particles
of silver to kill bacteria. Rebecca Williams reports the Environmental
Protection Agency says it’s going to regulate the machines as
pesticides:


The Samsung Silver Ion machine generates tiny charged particles of
silver that kill bacteria on contact.


The EPA has decided any kind of machine that generates ions to kill
pests has to be regulated as a pesticide.


Andrew Maynard is a scientist with the Woodrow Wilson International
Center for Scholars. He says there are worries that these kinds of
machines could kill helpful bacteria:


“What’s causing concern is the release of these charged silver atoms
into the environment which can kill bacteria but also might end up
killing bacteria we don’t want them to.”


Maynard says there are about 130 products on the market now that use
tiny silver particles to kill bacteria. They’re in everything from kitchen
countertops to food containers.


But he says EPA hasn’t decided whether to regulate those products as
pesticides.


For the Environment Report, I’m Rebecca Williams.

Related Links