Nearly a year after the U.S. Supreme Court left key watersheds unprotected by the Clean Water Act, the Polis administration has designated new protections for some 385 miles across 15 rivers and streams in the Upper and Lower Colorado, Eagle, Yampa and Roaring Fork river basins.

Chad Rudow, water quality program manager with the Roaring Fork Conservancy, said the Outstanding Waters designation is an important tool for protecting drinking water.

"Which means it's protecting the actual quality of the water, and that's the highest level of protection that can be given to a stream within the state of Colorado," he said.

The designation aims to protect existing high-quality waterways from any future degradation, including pollution from development, mining, oil and gas extraction, and other uses. It does not affect any existing uses in the watershed, so long as they don't degrade current water quality.

The designation, which won unanimous approval by the Colorado Water Quality Control Commission in late August, comes after years of work done by conservation groups.

Carrie Sandstedt, senior officer with The Pew Charitable Trusts, said protections are still needed for many streams in the state, and added that protecting water quality is critical not only for drinking water but also healthy wildlife habitat and ecosystems.

"This designation not only protects rivers and streams, it also protects their associated wetlands. It helps preserve important plant life and other species critical for healthy freshwater habitats," she said.

The designation also protects one of the state's biggest economic drivers. A recent study found that Colorado's river basins generated nearly $11 billion in outdoor recreation spending in 2019. Rudow noted clean water is essential for swimming, rafting and other activities across the Roaring Fork Valley.

"We have the second longest contiguous reach of Gold Medal water in our watersheds, so that's high-quality fishing streams. People come from all over the world, literally, to go fly fishing," he explained.

New research at Iowa State University shows elevated nitrate levels have an outsize effect on the state's most vulnerable populations.

Studies show exposure to nitrates can increase the risks of birth defects and various types of cancer.

ISU Water Resources Assistant Professor Liu Lu said nitrates, which are prominent in ground and surface water near commercial agriculture operations, exceed safe levels, and affect Iowa's most vulnerable.

"Such as people of color," said Lu, "low-income populations, elderly, and also children."

Despite their negative health impacts, the Iowa Environmental Council reports only 4% of public water utilities in Iowa have nitrate removal systems.

The data show the presence of nitrates in the water is especially high in rural communities, and Liu said northeast Iowa's Blackhawk County stands out in her research.

"This county has very high nitrate in their treated water," said Lu. "They also have very high social vulnerability. So, people living in that county are disproportionately exposed to high nitrate in their drinking water."

Her research includes an interactive map that shows which parts of the state have the highest nitrate pollution in their groundwater.

Liu's work was published in Environmental Science: Water Research & Technology.



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Compared with other states, North Dakota has yet to see a big invasion of aquatic nuisance species. But officials are not letting their guard down, and to protect regional lakes, they ask boaters to pitch in with key cleaning steps.

The North Dakota Game and Fish Department says because of its location, North Dakota has largely been shielded from nonnative plants, insects and other organisms infesting its waterways as they have in coastal areas and the Great Lakes region.

Ben Holen, the department's aquatic nuisance species or ANS coordinator, said the southeastern part of the state has seen activity, namely with zebra mussels.

"Zebra mussels, they're manipulators of the ecosystem. They completely cover docks," he explained. "They clog water intakes. They push nutrients to the bottom, which increases vegetation growth out there."

That's bad news for native species, as well as economic activity from water recreation. As North Dakotans prepare their boats for the summer, they're asked to memorize key steps for each outing. Those include cleaning, draining and drying all equipment after every use, with a focus on removing all plants or animals from the watercraft prior to leaving the site. Doing so means these tiny creatures won't find their way to the next lake.

While his department does its mitigation work, Holen said, boat owners are being given tools to aid in their responsibility. Each year, boat-cleaning stations are being set up at access points to various North Dakota lakes.

"We've been looking to provide more and more each year for boaters, so it's never been easier for boaters to get cleaned, drained, dry at the boating access," he continued.

Holen said if boaters are not eager to help out, they could feel an economic pinch later through tax increases and higher water bills if state and local agencies have to clean or replace infrastructure damaged by an infestation.


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Iowa lawmakers are considering a bill that would require property owners to disclose the presence of lead water service lines during a real estate transaction.

Some of Iowa's residential water lines date back more than a century.

The Centers for Disease Control and Prevention estimates at least half of the children in the United States are at risk of lead exposure from water lines.

The Iowa Environmental Council's Director of Climate Initiatives Cody Smith said the problem is especially acute in Iowa, where most of the homes built before 1980 have lead in the lines that bring water to the house, and added it will be extremely expensive to address.

"It's estimated that fixing Iowa's lead service line issue would cost about $900 million statewide," said Smith. "So, this is a pressing health concern for the children in our state."

Iowa is responding to a federal rule passed last year that requires all service lines that contain lead to be replaced by 2035.

House File 876 would require sellers to disclose that their house has lead service lines in a real estate transaction.

Iowa utility companies are notifying people if their house has lead in its service lines and offering assistance to remediate it.

Smith said homeowners can also find out for themselves if there's lead in their pipes.

"You can use, like, a penny to scratch your service line where it comes in to often the foundation of your home," said Smith. "And you'll see if it's copper. It it's copper, you're fine. Or if it's PVC plastic, you're fine. But oftentimes, it's going to be a lead service line."

HF 876 has passed the Iowa House and awaits action in the Senate.




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