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District of Columbia sewage discharges in 2025

14 records of sewage discharges and water advisories in District of Columbia dated in 2025, newest first. Each record keeps the source's own times and wording; a record from the last six months, or one still in effect, also has a page of its own.

By type: Sanitary sewer overflow (SSO)12 · Combined sewer overflow (CSO)2

By source: EPA ECHO Sewer Overflow and Bypass Event report (reported to regulators)13 · DC Water (news release / public notice)1

2025 in other states: Connecticut, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Vermont, Virginia.

Source: the agencies, sewer operators and EPA records named on each row and on the Sources page. Updated 2026-11-03 02:43 UTC.

Sanitary sewer overflow (SSO): sewage spills from a sewer meant to carry sewage separately from rainwater. Combined sewer overflow (CSO): sewage mixed with rainwater spills from a shared sewer system.

Records in District of Columbia, 2025, newest first
WhenReportStatus
to Dec 7 ’25, 5:00 PMDistrict of Columbia Water and Sewer… · Broad Branch · SSO · 23,000 gallons · notice · mapended
to 1:45 PMDistrict of Columbia Water and Sewer… · Rock Creek · 024 · CSO · 100 gallons · notice · mapended
to Sep 12 ’25, 10:00 PMDistrict of Columbia Water and Sewer… · Broad Branch · SSO · 5,000 gallons · notice · mapended
to 3:00 PMDistrict of Columbia Water and Sewer… · Potomac River · SSO · 500 gallons · notice · mapended
to 6:45 PMDistrict of Columbia Water and Sewer… · Oxon Run · SSO · 5,000 gallons · notice · mapended
District of Columbia Water and Sewer… · Anacostia River · SSO · 6,200 gallons · notice · mapreported
to Aug 15 ’25, 1:04 AMDistrict of Columbia Water and Sewer… · Broad Branch · SSO · 1,000 gallons · notice · mapended
to Jul 21 ’25, 3:00 PMDistrict of Columbia Water and Sewer… · Anacostia River · SSO · 6,200 gallons · notice · mapended
to Jul 19 ’25, 3:00 PMDistrict of Columbia Water and Sewer… · Piney Branch · SSO · 1,300 gallons · notice · mapended
to 8:00 PMDistrict of Columbia Water and Sewer… · Potomac River · SSO · 40 gallons · notice · mapended
to Jun 18 ’25, 12:35 AMDistrict of Columbia Water and Sewer… · Watts Branch · SSO · 5,000 gallons · notice · mapended
to May 17 ’25, 1:45 AMDistrict of Columbia Water and Sewer… · Hickey Run · SSO · 6,000 gallons · notice · mapended
to May 10 ’25, 10:45 PMDistrict of Columbia Water and Sewer… · Hickey Run · SSO · 10,000 gallons · notice · mapended
to 4:00 AMDistrict of Columbia Water and Sewer… · Potomac River · CSO · 61,000 gallons · notice · mapended

Sources: ECHO NPDES Sewer Overflow and Bypass Event Dataset, retrieved 2026-11-03 02:28 UTC; news release / public notice, retrieved 2026-11-03 02:41 UTC. A report's record id and times show when you hover or focus its "report" link.