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District of Columbia sewage discharges in 2026

14 records of sewage discharges and water advisories in District of Columbia dated in 2026, newest first, 2 earlier versions or duplicates included and marked. 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)13 · Combined sewer overflow (CSO)1

By source: EPA ECHO Sewer Overflow and Bypass Event report (reported to regulators)12 · DC Water (news release / public notice)2

2026 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, 2026, newest first
WhenReportStatus
to 6:00 PMDistrict of Columbia Water and Sewer… · Rock Creek · SSO · 1,000 gallons report · notice · mapended
to Jul 2, 10:45 PMDistrict of Columbia Water and Sewer… · Broad Branch · SSO · 1,000 gallons report · notice · mapended
to Jun 30, 1:13 AMDistrict of Columbia Water and Sewer… · Broad Branch · SSO · 1,000 gallons report · notice · mapended
to Jun 15, 10:18 PMDistrict of Columbia Water and Sewer… · Broad Branch · SSO · 100 gallons report · notice · mapended
to Jun 5, 8:00 PMDistrict of Columbia Water and Sewer… · Broad Branch · SSO · 1,000 gallons report · notice · mapended
to May 21, 2:00 AMDistrict of Columbia Water and Sewer… · Pope Branch · SSO · 10,000 gallons report · notice · mapended
to Apr 17, 3:45 AMDistrict of Columbia Water and Sewer… · Potomac River · CSO · 14,767 gallons · notice · mapended
to 2:25 AMDistrict of Columbia Water and Sewer… · Potomac River · SSO · 534,772 gallons · notice · mapended
District of Columbia Water and Sewer… · Potomac River · SSO (earlier version) · volume not reported · notice · mapreported
to 3:45 AMDistrict of Columbia Water and Sewer… · Potomac River · SSO · 291,667 gallons · notice · mapended
to 1:00 AMDistrict of Columbia Water and Sewer… · Potomac River · SSO · 291,667 gallons · notice · mapended
to 9:29 PMDistrict of Columbia Water and Sewer… · Potomac River · SSO · 19,400 gallons · notice · mapended
to Jan 27, 10:10 AMDistrict of Columbia Water and Sewer… · Potomac River · SSO · 242 million gallons · notice · mapended
District of Columbia Water and Sewer… · Chesapeake and Ohio Canal, Potomac River · SSO (earlier version) · volume not reported · notice · mapreported

Sources: ECHO NPDES Sewer Overflow and Bypass Event Dataset, retrieved 2026-11-03 02:28 UTC; news release / public notice, retrieved 2026-11-03 02:40 UTC. A report's record id and times show when you hover or focus its "report" link.