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District of Columbia sewage discharges in 2023
2 records of sewage discharges and water advisories in District of Columbia dated in 2023, 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)1 · Combined sewer overflow (CSO)1
By source: EPA ECHO Sewer Overflow and Bypass Event report (reported to regulators)2
2023 in other states: Connecticut, Maine, Maryland, Massachusetts, New Hampshire, New York, Pennsylvania, Rhode Island, Vermont.
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.
| When | Report | Status |
|---|---|---|
| to 8:45 PM | District of Columbia Water and Sewer… · Fenwick Branch · SSO · 5,000 gallons · notice · map | ended |
| to 8:31 PM | District of Columbia Water and Sewer… · Rock Creek · 024 · CSO · 1 million gallons · notice · map | ended |
Sources: ECHO NPDES Sewer Overflow and Bypass Event Dataset, retrieved 2026-11-03 02:28 UTC. A report's record id and times show when you hover or focus its "report" link.