Clean Water Act discharge permit · NPDES MD0023914
SOUTHERN MD. PRE-RELEASE UNIT, Hughesville, MD: NPDES MD0023914 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 15Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
SOUTHERN MD. PRE-RELEASE UNIT holds NPDES permit MD0023914, which discharges to Lower Potomac River. EPA’s file records it issued July 22, 2016 and expiring August 31, 2021. 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 | SOUTHERN MD. PRE-RELEASE UNIT |
|---|---|
| Permittee as filed | SOUTHERN MD. PRE-RELEASE UNIT |
| NPDES ID | MD0023914 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | July 22, 2016 |
| Expiration date | August 31, 2021 |
| Issuing agency | Maryland Department of The Environment |
| Address | Hughesville, MD 20637 |
| Receiving water | LOWER POTOMAC RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Trinity Church Run-Wicomico River (HUC 020700110501) |
| SIC | 9223 – Correctional Institutions |
| Other EPA IDs (FRS) | ICIS-AIR source MD0000002401700038 |
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
- 16Pollutants on file
- 15Under a numeric limit
- 13With a violation of any kind
- 5With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 8 | 51 | 11 | August 31, 2017 | 95% over the limit |
| BOD, 5-day, 20 deg. C | 8 | 111 | 7 | July 31, 2018 | 91% over the limit |
| Nitrogen, Kjeldahl, total [as N] | 8 | 5 | 5 | July 31, 2020 | 180% over the limit |
| Solids, total suspended | 6 | 108 | 4 | February 28, 2005 | 89% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 35 | 3 | November 30, 2000 | 95% over the limit |
| pH | 2 | 46 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 24 | 0 | ||
| Chlorine, total residual | 1 | 24 | 0 | ||
| Coliform, fecal general | 0 | 22 | 0 | ||
| Nitrogen, total [as N] | 3 | 7 | 0 | ||
| Nitrite + Nitrate total [as N] | 1 | 2 | 0 | ||
| Nitrogen, organic total [as N] | 1 | 1 | 0 | ||
| E. coli | 1 | 1 | 0 | ||
| Phosphorus, total [as P] | 3 | 0 | 0 | ||
| Phosphate, ortho [as P] | 1 | 0 | 0 | ||
| Flow, total | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MD0023914.
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.
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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 MD0023914 there.
Nearby on the register
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- Every permit record in Hughesville, A to Z
- Discharge permits in Maryland
- Every permit record in Maryland, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.