Potomac Interceptor Sewage Spill

Water Quality Monitoring Sites 

DC Dept. of Energy and Environment
Potomac Interceptor Monitoring

DC Water
Potomac Interceptor Updates

Maryland Department of the Environment
Potomac Interceptor Information

Virginia Department of Environmental Quality
Potomac Interceptor Collapse
Potomac Water Sampling

Potomac Riverkeeper
Sewage Spill Data and Updates

Health Advisories 

DC Health
Potomac Sewer Line Collapse Update

Montgomery County Health
Health Guidance for Areas Affected by PI Spill  

Virginia Department of Health
VDH Lifts Potomac River Recreational Water Advisory

CCA Letters Regarding the Sewage Spill

Request for Expanded Water and Sediment Testing 24 February 2026.pdf

Requested Sediment Testing Locations.pdf

CCA Comments on DC Water Rehabilitation Plan.pdf

Letter to DC Water regarding Potomac Interceptor Sewage Spill

DC Council hearing with testimony.pdf

Potomac River News Posted in Chronological Order

DC region faces growing risk of water shortages as Potomac River hits near-record lows
Potomac Water Shortage

Potomac River ranks No. 1 on new list of ‘Most Endangered Rivers’
Potomac Endangered

Years of Delay and Neglect Caused Potomac Interceptor Rupture
From Potomac Riverkeeper

Fox 5 - Potomac Interceptor sewage spill may impact river for up to a decade
Cleanup May Take 10 Years

DC Water News
DC Water's News and Updates

DC News Now
DC Water, federal agencies focused on environmental cleanup

The Atlantic
Washington’s Sewage Apocalypse

EPA to Take Over Potomac River Water Quality Sampling Near Interceptor Site
EPA to Take Over Potomac Water Quality Sampling

WTOP - DC Water: Rain will help rinse C&O Canal
Heavy Rain to Help Flush Out C&O

NBC 4 - DC Water repairs Potomac Interceptor
Interceptor Emergency Repair Work Completed

WTOP - DC Water completes final emergency repairs to Potomac Interceptor
PI Emergency Repair Work Completed

DC Water - Potomac Interceptor Map
Potomac Interceptor Map

DC Water - Rehabilitation Plan
Environmental Rehabilitation Plan

DC Water - Potomac Interceptor Crossing at Great Falls
Potomac Interceptor at Great Falls 

Potomac Riverkeeper
Ongoing Fecal Contamination

Fox5 Washington DC
Class Action Lawsuit Filed
Ongoing Fecal Contamination

WTOP
DC Water Sued for Damages

DC Water - Rock Blocking Potomac Interceptor
Rock Blocking Interceptor Pipe

DC Water News
Potomac Interceptor Collapse
Potomac Interceptor Updates
Restoration Plan
DC Water Potomac Interceptor Project
Repair Work on Interceptor Begins

WTOP: Two More Sections at Risk
Sections of Interceptor at Risk

The Wall Street Journal
Potomac Sewage Spill

DC Water: Sewer Collapse
Potomac Interceptor Collapse
Potomac Interceptor News

Potomac Riverkeeper
Sewer Spill Press Release