Two stories dominated environmental news this week. They seem unrelated — one about sewage, the other about chemicals. But they share a root cause that matters more than either headline: the growing distance between what we know is dangerous and how fast we act on it.
A River of Sewage, Three Months of Silence
On Monday, the Department of Justice — on behalf of the EPA — filed a Clean Water Act complaint against the District of Columbia Water and Sewer Authority (DC Water) over the catastrophic failure of the Potomac Interceptor. The same day, Maryland Attorney General Anthony Brown filed a separate state lawsuit.
The facts are blunt. On January 19, a 72-inch section of the Potomac Interceptor collapsed near Lock 12 on the C&O Canal in Montgomery County, Maryland. Over eight days, more than 200 million gallons of raw, untreated sewage poured into the Potomac River and its tributaries — upstream of the nation's capital.
That is not a typo. Two hundred million gallons. For context, that is roughly equivalent to 300 Olympic swimming pools of raw sewage entering a river that supplies drinking water to millions of people across Virginia, Maryland, and the District.
DC Water crews scrambled to install diversion pumps to reroute wastewater around the break. They used a section of the historic C&O Canal as a containment channel — repurposing a National Historical Park as a temporary sewer. Pumps periodically clogged with rags and wipes. On February 8, another 500,000 gallons of sewage discharged directly into the Potomac when multiple pumps failed simultaneously. President Trump declared a FEMA emergency. The Army Corps of Engineers deployed to build stormwater diversions around areas still coated in sewage debris.
The DOJ complaint seeks financial penalties, system rehabilitation, and a court order requiring DC Water to develop an Enhanced Operations and Maintenance Plan for all its sewer lines. The Potomac Interceptor conveys an average of 60 million gallons per day of sewage from parts of Northern Virginia, D.C., and Maryland. It is not optional infrastructure. It is the backbone.
What makes this story important beyond the shock factor: the Potomac Interceptor was aging infrastructure with a known maintenance profile. This was not an unforeseeable event. It was a failure of investment and maintenance — the kind of systemic underinvestment that quietly degrades water systems nationwide until something breaks in a way that cannot be ignored.
PFAS Reporting Delayed — Again
On April 8, EPA Administrator Lee Zeldin signed a final rule pushing back the start date for PFAS data reporting under TSCA Section 8(a)(7) to no earlier than January 31, 2027. This is the third extension since the reporting rule was finalized in October 2023.
The original timeline required manufacturers and importers who handled PFAS or PFAS-containing articles between 2011 and 2022 to begin submitting data by November 2024. That was pushed to July 2025, then to April 2026, and now to 2027 — each time citing delays in developing the electronic reporting system (CDX) and the need to finalize proposed exemptions for de minimis concentrations and imported articles.
We want to be fair here. Building a reporting infrastructure that can meaningfully capture data on thousands of PFAS compounds across a decade of manufacturing and import activity is genuinely complex. And the proposed exemptions for trace-level PFAS in imported goods may be reasonable — there is a legitimate question about whether requiring a small retailer to report PFAS present at 0.05% in an imported zipper serves the public interest.
But three delays in three years creates a credibility problem. The rule was finalized in 2023. By the time reporting actually begins, companies will have had more than three years of lead time. At some point, delay stops looking like prudence and starts looking like indefinite deferral.
Meanwhile, PFAS are not waiting. They are in groundwater. They are in drinking water systems. They are in the blood of firefighters and the breast milk of mothers. Every month of delayed reporting is a month we do not have comprehensive data on who manufactured what, where it went, and how much is still out there.
What Else Moved This Week
Several other developments round out a busy week in environmental regulation:
Microplastics on the radar. EPA proposed including microplastics as a priority contaminant group in its Sixth Contaminant Candidate List under the Safe Drinking Water Act. This is the first formal step toward potential drinking water regulation — a significant signal, even though actual standards could be years away. The science on microplastic health effects is still emerging, but the monitoring infrastructure needs to start now.
Utah ozone rollback. EPA proposed repealing a Biden-era decision that reclassified Utah's Northern Wasatch Front from "Moderate" to "Serious" nonattainment for ozone under the 2015 air quality standards. The proposal argues that much of Utah's ozone problem originates from out-of-state sources. Environmental groups counter that local emissions — from refineries, vehicles, and industrial operations along the Wasatch Front — are a major contributor. Downgrading the designation reduces the required pollution controls. The air did not get cleaner; the standard got looser.
Gulf oil spill traced to Pemex. A government investigation confirmed that a leaky undersea pipeline near the Abkatun offshore platform, owned by state oil company Pemex, caused the Gulf of Mexico oil spill that soiled beaches from Tabasco to Tamaulipas. An estimated 800 tons of hydrocarbons reached protected areas including the Los Tuxtlas Biosphere Reserve and the Veracruz Reef System National Park. Three employees were fired. Infrastructure decay, again.
33.5 million children breathing bad air. The American Lung Association's annual assessment found that 46 percent of American children — 33.5 million kids — live in areas with failing air quality grades. Children of color are disproportionately affected. Young lungs are still developing and more vulnerable to ozone and particulate pollution. This is not abstract. It is asthma inhalers in school nurses' offices.
The Pattern
If you step back from this week's individual stories, a pattern emerges that is worth naming: we are better at identifying environmental problems than we are at maintaining the systems that prevent them or building the systems that track them.
We knew the Potomac Interceptor was aging. We know PFAS are everywhere. We know microplastics are in drinking water. We know air quality is failing kids in nearly half the country. The science is not the bottleneck. The bottleneck is sustained investment in infrastructure, sustained commitment to data collection, and sustained willingness to act on what the data shows.
At EPR Foundation, we believe the path forward is not louder alarm bells — it is better systems. Pipes that get maintained before they collapse. Reporting rules that actually collect data on schedule. Monitoring programs that start before we have a crisis. These are not glamorous solutions. They are the ones that work.
We will be watching the DC Water litigation closely. We will be tracking whether the January 2027 PFAS reporting date holds. And we will keep doing what we do: making the regulatory landscape legible so that people who care about clean water and clean air can see what is actually happening.
Sources: U.S. Department of Justice (April 21, 2026); Maryland Office of the Attorney General (April 21, 2026); EPA Final Rule, 91 Fed. Reg. 18786 (April 13, 2026); CIRS Group regulatory analysis (April 17, 2026); McGuireWoods Contaminants Compass (April 2026); EPA Newsroom; American Lung Association 2026 State of the Air Report; Los Angeles Times / Bloomberg (April 20, 2026).