By Caleigh Wells for KCRW.
Broadcast version by Suzanne Potter for California News Service reporting for the Solutions Journalism Network-Public News Service Collaboration

Hours after another storm soaked Southern California, LA County’s principal stormwater engineer Sterling Klippel stands at the base of the San Gabriel Dam, looking like a kid in a candy store. He gazes in awe at the thousands of gallons of stormwater rushing through this dam every second.

“Just this October, this facility was completely drained,” he says.

This dam is almost 300 feet deep in the middle, and it went from empty to full in less than six months. And it’s just one of more than a dozen dams in the county.

Soggy Southern California has gotten more than two feet of rain this season – so far, about double an average year, making it one of the top 10 wettest years on record.

“It's amazing to see it when it's here, and every drop is precious. So we do our best to capture every drop of it,” says Klippel. 

Los Angeles County is on track to capture enough stormwater this year to quench the year-round water needs of more than a quarter of the county’s residents. It’s good news, but there is still a lot of work to do to meet local water use goals.

'A good job of for the infrastructure we have'

“We're making strides, and we just need to make sure that we don't let our foot off the gas,” says Bruce Reznik. He leads the nonprofit LA Waterkeeper, which is the city’s self-proclaimed water watchdog. “We have done a good job, for the infrastructure we have.”

That’s thanks to nearly century-old infrastructure that’s still working. 

Trickling waterfalls in the San Gabriel Mountains typically drain into giant dams like the San Gabriel Dam, which was built in the 1930s. When they get full, public works officials open the floodgates at the bottom of the dams to send the water downstream.

“From there, we release it and we send it down to our spreading grounds, which are these large basins,” says Klippel. “The water then will percolate through this kind of sandy gravelly geology here and recharge these local aquifers where later it's pumped out for local municipal water use.”

'A century worth of poor planning'

Klippel says LA County gets about a third of its water from those aquifers while the rest is imported either from Northern California or from the Colorado River.

But the City of LA’s goal is to flip that equation by 2035, using two-thirds local water and cutting Southern California's dependence on imported water. Reznik says the local infrastructure is just not set up for that yet.

“A lot of that is because … so much of LA is channelized and concretized and urbanized, that we're not letting Mother Nature do its job of capturing the stormwater, letting it recharge our groundwater,” he says. “We are trying to undo a century worth of poor planning around water, and it's going to take us a while.”

LA is so developed and has such high flood risk that for decades the county has focused on funneling water as quickly and safely as possible straight to the ocean. 

In big storms like we’ve seen this winter, that’s happening no matter how hard Klippel tries to stop it. “With so much water in the system at this point, there is some water that's still making its way to the ocean.”

Infrastructure woes can get solved with big investments, but Californians decided years ago that two-thirds of voters need to approve new taxes for stormwater capture. That’s an extremely high bar.

“Unfortunately, it's actually very hard to fund stormwater projects,” says Resnik. “There has been a decade's long lack of funding for stormwater infrastructure.”

Which is why people like Reznik were so thrilled when county voters passed Measure W five years ago that devotes $280 million each year to water projects. 

But as the climate crisis worsens, more money has to go toward maintaining current infrastructure. For example, wildfire burn scars result in more loose soil falling into the dams and leaving less space for water.

Officials anticipate it’ll take several billion dollars to hit that 2035 goal to use mostly local water.

“Which seems pretty ambitious to me,” says USC Assistant Professor of civil and environmental engineering Dan McCurry. He says stormwater capture is actually one of the best tools we’ve got for cutting down our reliance on imported water.

“We're not talking about complicated, energy-intensive, expensive engineering treatment processes like we have to do for wastewater reuse. So in some sense, stormwater capture – when it's available – is low-hanging fruit.”


Caleigh Wells wrote this article for KCRW.


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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."


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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.