Does the Potomac River Sewage Spill Affect You? Health Risks and Legal Options

On January 19, 2026, a section of the Potomac Interceptor sewer line collapsed near Cabin John in Montgomery County, Maryland, triggering one of the largest sewage spills in U.S. history. Hundreds of millions of gallons of raw, untreated wastewater have since discharged into the Potomac River, prompting public health emergencies across the region and raising serious questions about accountability.

If you or a family member were in or near the Potomac River after January 19, 2026, and have experienced illness or other health symptoms, you may be entitled to compensation. Contact our personal injury lawyers at Regan Zambri Long for a free consultation.

What Caused the Potomac River Sewage Spill?

The 72-inch-diameter Potomac Interceptor, operated by DC Water, collapsed along the Clara Barton Parkway approximately 8 miles from the White House. The pipe normally carries up to 60 million gallons of sewage per day from parts of northern Virginia and Maryland to the Blue Plains Advanced Wastewater Treatment Plant in Washington, DC.

The scale of the disaster is significant:

• 243.5 million gallons of raw, untreated wastewater have been released into the Potomac River and surrounding areas, according to DC Water, which is equivalent to roughly 368 Olympic-sized swimming pools.
• The Potomac Riverkeeper Network estimates the total discharge may be closer to 300 million gallons.
• The bulk of the spill occurred in the first five days, before an interim bypass pumping system was activated.
• In early February, additional overflow events occurred, including one on Super Bowl Sunday when clogged bypass pumps caused another release.
• Repairs are estimated at $20 million, with a temporary fix taking roughly six weeks and a permanent solution projected to take nine months.
• The pipe was built in the 1960s, raising serious questions about infrastructure maintenance and oversight.
• The EPA has described the situation as an ecological crisis of “historic proportion.”
• D.C. Mayor Muriel Bowser declared a public health emergency, and the U.S. Army Corps of Engineers joined response efforts following a February 22 disaster declaration.

This is considered one of the largest sewage spills in United States history. The collapse did not just affect a small stretch of river; bacterial levels have been measured far downstream, and health advisories have been issued across multiple jurisdictions, including a 72.5-mile recreational advisory along the Virginia coastline of the Potomac.

How Contaminated Is the Potomac River After the Spill?

Testing by the Potomac Riverkeeper Network found fecal bacteria levels more than 2,700 times the limit the EPA considers safe for recreational water contact. E. coli concentrations near the spill site were hundreds of times above EPA safety thresholds, and Staphylococcus aureus (staph) continues to be detected at the site. Health advisories have been issued across multiple jurisdictions, including a 72.5-mile recreational advisory along Virginia’s Potomac coastline.

Environmental advocates have also raised concerns that rising spring and summer water temperatures could trigger algal blooms, potentially degrading water quality for months to come. In November 2025, just weeks before the spill, the Potomac Conservancy gave the river a “B” water-quality rating, noting its remarkable environmental comeback. This disaster threatens to reverse years of progress.

Health Risks from Potomac River Sewage Exposure

Raw sewage contains a host of dangerous pathogens. If you were in contact with Potomac River water, riverbank soil, or spray from the water after January 19, 2026, you may have been exposed to harmful bacteria, viruses, and parasites. DC Water has urged anyone who comes into contact with the wastewater to wash exposed skin thoroughly with soap and water and seek medical attention if symptoms develop.

Health risks associated with sewage exposure include:

• Gastrointestinal illness— nausea, vomiting, diarrhea, and stomach cramps, often caused by E. coli, Salmonella, or norovirus
• Skin infections — rashes, sores, or cellulitis from contact with contaminated water
• Staph infections — including potentially serious Staphylococcus aureus infections, which researchers are still detecting at the spill site
• Eye, ear, and respiratory infections — particularly for those who swam in, paddled on, or were otherwise immersed in the river
• Hepatitis A — a viral liver infection that can spread through contact with fecally contaminated water
• Long-term health complications — in vulnerable individuals, including children, the elderly, and those with compromised immune systems

If you experienced any of these symptoms after contact with the Potomac River since January 19, 2026, seek medical attention immediately and document your symptoms, the date of exposure, and your location. This information will be important if you decide to pursue a legal claim.

Who Is Liable for the Potomac Interceptor Collapse?

The Potomac Interceptor was built in the 1960s and had been deteriorating for decades. Determining who failed in their duty to maintain it and who must now be held accountable is at the heart of any legal claim arising from this spill.

DC Water owns and operates the Potomac Interceptor. The pipe that collapsed was built in the 1960s, and infrastructure experts have noted that aging sewer systems across the country have been chronically underfunded and poorly maintained. If DC Water failed to properly inspect, maintain, or upgrade the pipeline in a reasonable and timely manner, it could potentially be found liable for the harm caused by the collapse.

Federal agencies may also be implicated. Maryland Governor Wes Moore publicly stated that maintaining the Potomac Interceptor has been a federal responsibility for the past century and that the federal government failed to act. The National Park Service manages the Clara Barton Parkway corridor where the collapse occurred, and the Army Corps of Engineers has since joined response efforts,  raising serious questions about federal oversight and maintenance responsibility.

Claims against the federal government are governed by the Federal Tort Claims Act (FTCA), which waives sovereign immunity under specific conditions. Importantly, FTCA claims require filing an administrative claim with the relevant federal agency before any lawsuit can be filed in federal court. There is a strict two-year statute of limitations from the date of the incident to file that claim, and the government has six months to respond before litigation can proceed. Missing this deadline can permanently bar your claim.

Contractors and third parties involved in prior maintenance or repair of the pipeline may also warrant scrutiny depending on their role in the lead-up to the collapse.

The Potomac River sewage spill is a toxic tort, a legal claim arising from exposure to harmful biological or chemical substances caused by another party’s negligence. Toxic tort cases involving contaminated water can be complex, particularly when public utilities and government entities are involved. Specific legal procedures and deadlines, including notice requirements, apply to claims against governmental bodies, making it essential to consult with an experienced toxic tort and personal injury attorney as soon as possible. Regan Zambri Long has experience handling water contamination toxic tort cases across Maryland and the DC region.

What to Do If You Were Exposed to the Potomac River Spill

If you believe you or a family member was exposed to contaminated Potomac River water and experienced illness or injury, taking the right steps now can make a significant difference in protecting your health and your legal rights.

• Seek Medical Attention. Your health comes first. Visit a doctor or urgent care facility and describe your symptoms, when they began, and that you may have been exposed to contaminated river water. Ask your provider to document the visit thoroughly.
• Document Your Exposure. Write down the date, time, and location where you were in or near the Potomac River. Note any activities — swimming, kayaking, fishing, walking along the riverbank — that may have resulted in contact with the water or soil. Photos and videos of the location are helpful.
• Save All Medical Records and Bills. Keep copies of all medical records, receipts, prescriptions, and any documentation of lost wages or other expenses related to your illness. These will be important in establishing damages.
• Preserve Evidence. If you have any clothing, equipment, or other items that came into contact with the contaminated water, preserve them. Do not wash or discard them.
• Avoid Further Exposure. Follow all public health advisories. As of February 2026, health officials across Maryland, Virginia, and the District of Columbia continue to warn the public against contact with water from the Potomac River. The risk of intermittent overflow events and continued elevated bacteria levels remains.
• Contact a Personal Injury Lawyer. Legal claims involving government entities often have strict filing deadlines. If federal agencies bear responsibility, the Federal Tort Claims Act requires filing an administrative claim before you can sue, and the clock starts from the date of your exposure. Acting quickly is critical to protecting your rights.

Talk to a Washington, DC Personal Injury Lawyer About the Potomac Spill

The Potomac River sewage spill is an ongoing public health crisis and one of the most significant toxic tort events in the Washington, D.C. region in recent memory. If you or a family member suffered health complications after contact with the Potomac River since January 19, 2026, you may be entitled to compensation.

Contact Regan Zambri Long to schedule a free consultation with our experienced personal injury attorneys. We serve clients throughout Washington, D.C., Montgomery County, Northern Virginia, and the surrounding region.

About the Author

Patrick M. Regan, Esq.

Patrick Regan is a board certified personal injury lawyer and a founding partner at Regan Zambri Long. His practice is devoted to helping those who suffered catastrophic injuries in car accidents, truck accidents, Metro accidents, and medical malpractice. Over his nearly 40-year career, Patrick has obtained some of the most significant jury verdicts in the history of Washington, DC on behalf of injured victims. Patrick is licensed to practice law in Washington, DC, Virginia, and Maryland. He received his B.A. at Hamilton College and his J.D. at the Columbus School of Law at the Catholic University of America.