HARRISBURG, Pa. – The same salt that melts ice and snow on slippery roads and sidewalks can also harm vegetation, aquatic life and even humans, according to the Chesapeake Bay Foundation, which monitors the effects of road salt on water quality.

Last year, the Pennsylvania Department of Transportation applied almost 900,000 tons of salt to state roadways.

City and town road crews used thousands more, and individuals also use salt and other compounds on their driveways and sidewalks.

While all that salt helps make icy roads safer, Harry Campbell, Pennsylvania executive director of the Chesapeake Bay Foundation, says it also alters the chemistry of groundwater, rivers and streams.

"That has the potential to affect what lives in that stream, like brook trout or certain types of species that require fresh water – and not waters with high amounts of salt in them – in order to live," he points out.

Campbell adds that melting compounds sold to the public may contain toxic additives such as cyanide, so consumers should research products before buying – and then, use only as much as necessary.

There are alternatives to salt that may lessen harm to pets or roadside vegetation. But Campbell points out that none is completely safe for the environment, and they can make their way into the drinking water supply.

"The majority of Pennsylvanians get their drinking water from surface water sources, meaning the intakes to public water supplies are relying upon these very streams and tributaries to our major waterways that are being affected," he explains.

Though drinking water is treated, Campbell adds overuse and misuse of road salts can make treatment more difficult and more costly.

And Campbell notes that, while salt is only applied to roadways during winter snow and ice storms, the huge amounts have a lasting impact.

"These salts are changing the chemistry of these streams in the longer term,” he stresses. “These aren't single event scenarios – these are changes that are being felt, even throughout the summer months."

Campbell acknowledges that roads salts are important for public safety, so the Chesapeake Bay Foundation recommends their wise use to reduce the harmful effects.



get more stories like this via email

The Environmental Protection Agency said the country's aging systems of water pipes are hotbeds for chemical and lead contamination.

More lead service line replacement programs exist in Illinois than any other state and Chicago alone has well over 400,000 lead pipes.

The nonprofit group Elevate wants everyone to have clean, safe drinking water, regardless of income or geographic location.

Patrick MacRoy, vice president of environmental health and water programs for the group, said one demographic has a higher susceptibility to lead poisoning.

"We've been focusing on child care facilities," MacRoy pointed out. "With the State of Illinois, we help administer a program to provide child care facilities with free lead and water testing, to help them meet their licensing requirements."

Extra attention, he added, is given to home-based child care sites because they are more likely to have a lead service line. Last month, President Joe Biden's Bipartisan Infrastructure Law allocated $15 billion to replace the country's weakening pipes.

Part of Biden's infrastructure law is adherence to the "lead and copper rule," removing the elements from water pipes by 2034. To better understand the mandate, the Environmental Defense Fund released a new national map of lead service line replacement programs to help locate and replace lead pipes that deliver water to homes.

Elevate's LeadCare program is focused on lead removal, which MacRoy explains is complicated and expensive.

"You have to open up a hole at the water main to make the connection, run a pipe across the yard and then reconnect it in the home, restore the property to its original condition, whether that's putting in grass seed or sod, or fixing landscaping or fixing interior drywall that you had to open up to get to where the pipe comes in the house," MacRoy outlined.

MacRoy added he welcomes federal resources and hopes to work with state and local governments to make sure they are distributed equitably to help neighborhoods that need them the most.

A 2024 study from Johns Hopkins University found 68% of Chicago children of color younger than age six are exposed to lead-contaminated drinking water.

There are nearly 150,000 miles of rivers and streams in South Dakota, but new data show many of those don't meet state standards for safe water quality.

According to the state's 2024 surface water quality report, nearly 80% of waters studied don't meet the quality requirements for their intended uses, including recreation and aquatic life. The primary contaminants are E. Coli and Total Suspended Solids, which make rivers run brown. The report says some of the culprits are river bank erosion, runoff from large farm operations and sewage overflows.

Travis Entenman, managing director with Friends of the Big Sioux River, said those can pose human health risks through drinking water.

"When there's excess nutrients in the water, it takes more cost, energy, equipment, time, money that goes into cleaning our water before we can drink it," he explained.

Much of the contamination comes from nonpoint sources, meaning it accumulates from many small inputs, which are hard to regulate. Instead, the state offers incentives for voluntary action by landowners to prevent runoff, but Entenman said there's more interest in those incentive programs than there is funding available.

Entenman expects that to change as the Natural Resources Conservation Service, which provides technical assistance to landowners, gets funding from the Inflation Reduction Act. Projects that can improve water quality include riparian buffers, waste management systems for livestock operators and alternative practices for row-crop growers. Entenman hopes to see many people get involved.

"When a river or lake becomes impaired, it's kind of like a death by a thousand cuts," he added. "So, if you're doing the right thing, but your upstream neighbor isn't, it's not going to solve the larger issue."


get more stories like this via email

The Blackwater River, which flows more than 30 miles through West Virginia's Allegheny Mountains, ranks among the top 10 most endangered rivers in the nation, according to a new report.

The river is threatened by a proposed four-lane highway construction project which would cross all of its headwater streams.

Judy Rodd, executive director of the group Friends of Blackwater, said Corridor H would involve building a bridge in an area honeycombed with old mines and explains the construction could compromise decades-old work to actively treat the water in the North Fork of the Blackwater impacted by acid mine drainage.

She is worried the highway could be a major environmental setback for the region.

"We expect in the next year to really clean up this river and bring back a trout fishery that used to be there," Rodd explained. "However, if they start building this bridge, they could be opening up old coal mines, old tunnels, which are filled with acid pollution."

Rodd noted a draft environmental impact review of the proposed project, required under federal rules, is expected to be released in the coming months.

Small businesses and the local outdoor recreation economy depend on the scenic views and wilderness surrounding the towns of Thomas and Davis. Rodd argued a four-lane highway, with accompanying construction, light and noise pollution, would drastically alter the landscape.

"It's tranquil, it's dramatic," Rodd observed. "You got bald eagles soaring overhead, you got rushing water, you got fishermen in the Blackwater Falls State Park area."

Olivia Miller, program director for the Highlands Conservancy, said the highway could be rerouted to avoid the Blackwater Falls area, and pointed to an online petition which will allow concerned residents to voice their support for a Northern route to the Federal Highway Administration.

"Right now, we are asking folks to go to the American Rivers website and fill out the action alert to send a letter to highway officials," Miller stressed.

The Blackwater River is home to the endangered Cheat Mountain salamander, eastern brook trout and many other native species.