Environment

From the Mayor’s Office:

“As the region continues responding to the Potomac Interceptor break, Mayor Muriel Bowser requested federal support through a Presidential Emergency Disaster Declaration request. In order to make the request, the Mayor first declared a local public emergency. In addition to seeking 100% reimbursement for costs incurred by the District and the District of Columbia Water and Sewer Authority (DC Water), the Mayor has requested federal support in the following areas: (more…)

The latest from DC Water:

“DC Water Advances Work to Repair Damaged Section of Potomac Interceptor
Emergency repair expected to take 4-6 weeks, followed by long-term rehabilitation

February 16, 2026

DC Water crews and its contractors, working under challenging conditions over the past month, are nearing completion of an enhanced bypass system that will allow emergency repairs to begin on a damaged section of the Potomac Interceptor. The emergency repair is expected to take another 4-6 weeks once the enhanced bypass system is activated and will address the immediate repairs to the damaged section of the pipe, restore wastewater flow back into the Potomac Interceptor, eliminate the temporary bypass pumping system in the C&O Canal, and allow for environmental restoration.

Over the weekend, (more…)

From DC Water:

“February 11, 2026

Our Shared Commitment to the Potomac River

To our neighbors, community partners, and everyone who cares deeply about the Potomac River,

I want to begin by acknowledging what so many residents, environmental advocates, and river users have expressed in recent weeks: the sewer break on January 19, 2026, was deeply troubling. The Potomac River is a shared natural treasure, and any event that threatens its health understandably causes concern, frustration, and a sense of loss. Those feelings are not only valid – but they are also shared by all of us at DC Water.

I want to explain how this incident unfolded and the actions we have taken to mitigate its impacts and move forward. On the evening of Monday, January 19, 2026, security cameras detected unusual activity near one of our odor control facilities along the Clara Barton Parkway. That alert led our teams to discover a collapse in a section of the Potomac Interceptor sewer line, which resulted in an uncontrolled overflow of wastewater into the Potomac River. From that moment forward, (more…)

ICYMI: Scroll down this post for “Potomac Conservancy sent a letter to DC Water calling for accountability, answers, and actions in response to the massive Potomac Interceptor sewage spill that began on January 19, 2026 in Cabin John, Maryland.”

“Pumping challenges continue at the damaged Potomac Interceptor. Two pumps clogged w/non-disposable wipes Monday night, causing an overflow & contained on-site. E. coli levels remain elevated at collapse site, downstream levels remain below EPA standards.”

The latest from DC Water:

“UPDATE: Potomac Interceptor Repair February 10

Highlights: (more…)

Just in from DDOT:

“Today, the District Department of Transportation (DDOT), along with the District Department of Energy and Environment (DOEE), announced the Neighborhood Curbside Electric Vehicle (EV) Charging Station Pilot, an initiative designed to expand access to public EV charging in residential neighborhoods across the District. The pilot will help inform future regulatory updates and establish guidelines for a permit program allowing private vendors to install, operate, and maintain curbside EV charging stations in the District’s public right-of-way. The pilot is being deployed in partnership with EV charging company It’s Electric and is funded through a federal grant awarded to the company. (more…)

“A significant overflow occurred overnight after pump capacity dropped during a high-flow period. An earlier, smaller overflow was contained. New pumps may arrive this week to help stabilize operations. Water quality sampling continues.”

The latest from DC Water:

“UPDATE: Potomac Interceptor Collapse, February 9

Highlights (more…)

The latest from DC Water:

“UPDATE: No Sewer Overflows Reported Today from Damaged Sewer Line as Excavation Work, Pumping Continues

Federal, State, and Local Officials Get Firsthand Look at Collapse Site and Repair Efforts

January 29, 2026

Over the past 24-hours, DC Water engineers for the first time report no sanitary sewer overflows escaping from a damaged section of the Potomac Interceptor since the incident happened. The 72-inch diameter pipe section collapsed on January 19, along Clara Barton Parkway and the C & O Canal National Historical Park in Montgomery County, MD.

This marks major progress in containment efforts, (more…)

From DC Water January 28, 2026:

“UPDATE: DC Water Begins Excavation to Assess Damaged Sewer Line and Lay Groundwork for Repair Efforts

Excavation is underway to access a damaged section of the Potomac Interceptor, a major sewer line that collapsed on January 19, along Clara Barton Parkway near the 495-interchange and C & O National Historical Park in Montgomery County, MD. This marks a pivotal step forward in the recovery process, allowing DC Water and its contractor to directly inspect the damaged pipe, exposing the affected section to assess its condition and formulate the best possible repair strategy.

A bypass system activated this weekend continues to successfully divert wastewater back into the sewer line further downstream of the collapse site. Engineers on-site report the lowest level of overflow from the area around the collapse since the incident started allowing the excavation activities to begin.

While still in the early stages of excavation, (more…)

Update from DC Water:

“DC Water teams and contractors are working around the clock to operate a bypass system that diverts wastewater away from a damaged section of the Potomac Interceptor. This major sewer line overflowed along the Clara Barton Parkway and C & O National Historical Park one week ago. Industrial pumps have been running since late Saturday, but heavy snow and extreme cold continue to create challenges for the equipment and operations. (more…)