Clean Water Act discharge permit · NPDES DC0000094
PEPCO - BENNING, Washington, DC: NPDES DC0000094 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 22Pollutants under a numeric limit
- 12Pollutants with an effluent exceedance
PEPCO - BENNING, held by PEPCO Environment Management Services, holds NPDES permit DC0000094, which discharges to Anacostia River. EPA’s file records it issued June 19, 2009 and expiring June 18, 2014. 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 | PEPCO - BENNING |
|---|---|
| Permittee as filed | PEPCO Environment Management Services |
| NPDES ID | DC0000094 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | June 19, 2009 |
| Expiration date | June 18, 2014 |
| Address | Washington, DC 20019 |
| Receiving water | ANACOSTIA RIVER |
| Subwatershed | Lower Anacostia River (HUC 020700100204) |
| SIC | 4911 – Electric Services |
| Other EPA IDs (FRS) | RCRA handler DCR000500157 |
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
- 34Pollutants on file
- 22Under a numeric limit
- 32With a violation of any kind
- 12With 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 |
|---|---|---|---|---|---|
| Copper, total [as Cu] | 6 | 91 | 54 | September 30, 2021 | 4,098% over the limit |
| Zinc, total [as Zn] | 10 | 87 | 48 | December 31, 2019 | 1,541% over the limit |
| Iron, total [as Fe] | 2 | 51 | 45 | June 30, 2026 | 2,364% over the limit |
| Solids, total suspended | 14 | 73 | 26 | December 31, 2021 | 467% over the limit |
| pH | 18 | 82 | 12 | March 31, 2015 | |
| Cadmium, total [as Cd] | 6 | 41 | 8 | September 30, 2014 | 140% over the limit |
| Lead, total [as Pb] | 6 | 34 | 5 | December 31, 2013 | 112% over the limit |
| Temperature, water deg. centigrade | 2 | 3 | 3 | June 30, 2011 | 171% over the limit |
| PCB-1260 | 9 | 33 | 2 | June 30, 2026 | 170% over the limit |
| PCB-1254 | 9 | 29 | 2 | June 30, 2005 | 99,999% over the limit |
| Chlorine, free available | 4 | 2 | 2 | September 30, 2006 | 90% over the limit |
| PCB-1242 | 9 | 26 | 1 | June 30, 2005 | 10% over the limit |
| Flow, in conduit or thru treatment plant | 21 | 71 | 0 | ||
| Oil & Grease | 10 | 59 | 0 | ||
| Toxicity, Acute | 4 | 44 | 0 | ||
| Iron, total recoverable | 4 | 31 | 0 | ||
| Nickel, total [as Ni] | 4 | 31 | 0 | ||
| Nitrogen, total [as N] | 0 | 25 | 0 | ||
| Phosphorus, total [as P] | 0 | 24 | 0 | ||
| Bromine, reported as the element | 4 | 6 | 0 | ||
| Chlorine, total residual | 1 | 4 | 0 | ||
| BOD, 5-day, 20 deg. C | 2 | 2 | 0 | ||
| Benzo[k]fluoranthene | 0 | 2 | 0 | ||
| Indeno[1,2,3-cd]pyrene | 0 | 2 | 0 | ||
| Benzo[a]anthracene | 0 | 2 | 0 | ||
| Dibenzo[a,h]anthracene, dry weight | 0 | 2 | 0 | ||
| 4,4'-DDT | 0 | 2 | 0 | ||
| Dieldrin | 0 | 2 | 0 | ||
| Heptachlor epoxide | 0 | 2 | 0 | ||
| Chlordane | 0 | 2 | 0 | ||
| 4,4'-DDD | 0 | 1 | 0 | ||
| 4,4'-DDE | 0 | 1 | 0 | ||
| Chromium, total [as Cr] | 4 | 0 | 0 | ||
| Benzene | 1 | 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 12, 2026 | Effluent Violations - Numeric effluent violation | EP6 |
| September 7, 2018 | Monitoring Violations - Analysis not Conducted | EP6 |
| September 7, 2018 | Effluent Violations - Numeric effluent violation | EP6 |
| February 12, 2018 | Effluent Violations - Numeric effluent violation | EP6 |
| November 8, 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, DC0000094.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
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 DC0000094 there.
Nearby on the register
- Discharge permits in Washington
- Every permit record in Washington, A to Z
- Discharge permits in District of Columbia
- Every permit record in District of Columbia, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.