Clean Water Act discharge permit · NPDES DC0000019
WASHINGTON AQUEDUCT, Washington, DC: NPDES DC0000019 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 12Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
WASHINGTON AQUEDUCT, held by WASH AQUEDUCT-DALECARLIA PLANT, holds NPDES permit DC0000019, which discharges to Potomac River. EPA’s file records it issued October 20, 2008 and expiring November 19, 2013. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | WASHINGTON AQUEDUCT |
|---|---|
| Permittee as filed | WASH AQUEDUCT-DALECARLIA PLANT |
| NPDES ID | DC0000019 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Federal facility |
| Issued | October 20, 2008 |
| Expiration date | November 19, 2013 |
| Address | Washington, DC 20016 |
| Receiving water | POTOMAC RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Nichols Run-Potomac River (HUC 020700081005) |
| SIC | 4941 – Water Supply |
| Other EPA IDs (FRS) | RCRA handler DC1960000908 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 12Pollutants on file
- 12Under a numeric limit
- 11With a violation of any kind
- 7With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Solids, total suspended | 16 | 190 | 172 | September 30, 2024 | 1,335,333% over the limit |
| Aluminum, total [as Al] | 14 | 178 | 168 | September 30, 2024 | 959,900% over the limit |
| Solids, suspended percent removal | 3 | 88 | 85 | February 28, 2015 | 567% over the limit |
| Iron, total recoverable | 14 | 44 | 38 | February 28, 2015 | 30,321% over the limit |
| Copper, total [as Cu] | 6 | 42 | 38 | February 28, 2015 | 23,488% over the limit |
| Chlorine, total residual | 6 | 15 | 8 | March 31, 2023 | 3,100% over the limit |
| pH | 16 | 21 | 1 | August 31, 2003 | |
| Iron, dissolved [as Fe] | 18 | 84 | 0 | ||
| Flow, in conduit or thru treatment plant | 18 | 84 | 0 | ||
| Copper, dissolved [as Cu] | 6 | 4 | 0 | ||
| Perchlorate [ClO4] | 2 | 1 | 0 | ||
| Chloroform | 2 | 0 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 5Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| June 25, 2026 | Effluent Violations - Unapproved Bypass | EP6 |
| June 22, 2026 | Effluent Violations - Unapproved Bypass | EP6 |
| May 12, 2026 | Effluent Violations - Unapproved Bypass | EP6 |
| May 21, 2018 | Effluent Violations - Numeric effluent violation | EP6 |
| July 17, 2017 | Effluent Violations - Numeric effluent violation | EP6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, DC0000019.
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID DC0000019 there.
Nearby on the register
- Discharge permits in Washington
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- Every permit record in District of Columbia, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.