Rivers running around Washington, D.C. are no stranger to contamination. Aging combined sewer systems routinely dump wastewater into local waterways through discharges known as combined sewage overflows, while legacy pollution from past military activities pollute the water as well, particularly in the Anacostia. D.C.’s agencies have evolved to address the environmental stressors of sewage and industrial pollutants like polychlorinated biphenyls (PCBs), but certain industrial pollutants remain unaddressed.
The Anacostia River Park, which borders the Anacostia River, is a Superfund site (a contaminated site listed under CERCLA’s National Priority List for cleanup) due to chemical dumping associated with former U.S. military activities. The river itself contains remnants of this cheap dumping practice that has harmed generations of primarily communities of color living by and off the river, from playing in its river banks to consuming its fish. After over 150 years of dumping toxic waste into the river, the Office of the Attorney General of the District of Columbia sued the U.S. government in early 2025 under CERCLA and the Brownfield Act. OAG alleged that the dumping was an intentional act of noncompliance with environmental laws, seeking “costs, damages, and a declaration of future liability” against the government.
D.C.’s Department of Energy and the Environment (DOEE) initiated the Anacostia River Sediment Project to clean up the river’s contamination in 2013, culminating in the release of the 100% Design Report in the summer of 2025. The report outlines the remedial design with considerations such as the feasibility, cost, and benefits of certain remediation design options, factoring in stakeholder input. While the report is a milestone in clean up efforts and is partially funded by entities like Pepco who contributed to its pollution, it is largely aimed at PCB contamination, leaving out other contaminants like PFAS which have been documented to reside in the Anacostia watershed. In line with the report, D.C.’s OAG alleged that the river contained PCBs and other industrial contaminants such as heavy metals, notably leaving out any mention of PFAS – which in some regards, may be the most insidious pollutant in the river due to their persistent, bioaccumulative nature. However, the District’s 2023 suit against major chemical corporations like 3M acknowledges that corporations and the DOD used and released products containing PFAS into the river; establishing an understanding of PFAS contamination.
Per- and polyfluoroalkyl substances, or PFAS, are a class of highly persistent, stable, and health-harming chemicals that have evaded substantive national and global regulation for decades. This regulatory ‘hole’ has been permitted via a lack of governmental oversight, systemic failures to hold corporations accountable for dumping, and improper corporate disclosures as to the toxicity of the chemicals. PFAS have been shown to cause a myriad of health conditions, from increased cholesterol to developmental effects to cancer. The exposure pathways of PFAS are well documented, where the chemicals can impact humans via dermal exposure, ingestion, and inhalation and often travel through industrial discharges into bodies of water as exceptionally mobile, stable compounds. The chemicals then bioaccumulate in various ecosystems, meaning that seafood in water bodies contaminated by PFAS are unsafe to consume. DOEE’s fishing advisory issued in 2024 highlights this fact and advises the public not to eat eel, carp, striped bass, or largemouth bass caught in the Anacostia due to high PFAS levels and to instead opt for smaller fish containing less PFAS in their tissues. Maryland’s Department of the Environment similarly issued a fishing advisory for the watershed for PFAS contamination.
The chemicals as both a class and individually are not yet adequately addressed in our drinking water, let alone our water bodies. With the U.S. EPA setting back its PFAS drinking water regulations at the dawn of the second Trump Administration, it is no surprise that water bodies and water quality are not a focus in the PFAS space. There is no government attempt to remediate PFAS in the Anacostia River as there is for PCB and other harsh contaminants, but the chemicals are present. OAG’s 2023 natural resource damages complaint against chemical manufacturers, seeking monetary damages, states that “PFOA and/or PFOS were detected at all locations tested” in D.C.’s waterways.
The Anacostia Riverkeeper found 8-10 different PFAS chemicals in the six samples collected from the river. The measurable PFOA (a common, “long chain” PFAS compound) concentrations in the samples ranged from 3.5-8 ppt, despite the EPA’s advisory limit of 0.004 ppt, and PFOS (another long chain PFAS compound) concentrations similarly ranged from 4.7-7.7 ppt, exceeding the EPA’s PFOS advisory limit of 0.002 ppt. Furthermore, the Environmental Working Group took water samples at certain locations across the U.S. and found significant levels of PFAS in samples from the Joint Base Anacostia–Bolling military installation situation along the Anacostia. For instance, one sample taken from the base was discovered to have a combined value of 10.6 ppt of the two “short-chain” PFAS (PFHxA and PFPeA) measured in the study.
Demonstrating the urgency of the public health issue and the recognized presence of PFAS in the river, the Anacostia Riverkeeper submitted public comments to DOEE to its “Early Action Area Remedial Design Report” at the 90% design phase, urging the agency to incorporate remediation plans for PFAS in its 100% Design Report. The Riverkeeper noted that it was “irresponsible for [DOEE] to know there is PFAS contamination in the Anacostia River but to not consider it in [the] [remediation], potentially yielding a final product that is already outdated before it’s even constructed.” The agency responded that it was infeasible at that point in the project because PFAS samples were not incorporated into the plan and “revisions would delay the project by years.”
Given budgetary limitations, the decision to exclude PFAS from river remediation efforts is a multi-pronged determination based on cost, time, resources, and practicality. PFAS are notoriously difficult and costly to filter from water (although there are emerging more cost-effective techniques) and now local governments and utility companies are made to grapple with federal and corporate failures. The argument that the addition of PFAS into the plan would significantly alter a nearly decades-long remediation planning process has merits, but at the same time, PFAS remediation should become a priority for federal and local governments to protect human and ecological health. This is especially pertinent following the allegations in the District’s natural resource damages complaint.
Although drinking water regulations are likely the first step, addressing the Anacostia’s PFAS contamination in some capacity should be made part of D.C.’s plan to remediate the river. This effort is necessary to safeguard the health of the communities that rely on and live by the river. It would also be a showing to other governments that water quality remediation includes PFAS – contaminants that have been ignored for far too long to the detriment of our health.
