Clean Water Act discharge permit · NPDES MDL021491
SENECA WWTP, Germantown, MD: NPDES MDL021491 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
SENECA WWTP, held by SENECA CREEK, holds NPDES permit MDL021491. EPA’s file records it issued January 1, 2021 and expiring December 31, 2025. 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 | SENECA WWTP |
|---|---|
| Permittee as filed | SENECA CREEK |
| NPDES ID | MDL021491 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Associated permit record |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Biosolids |
| Issued | January 1, 2021 |
| Expiration date | December 31, 2025 |
| Address | Germantown, MD 20874 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Great Seneca Creek (HUC 020700080802) |
| SIC | 4952 – Sewerage Systems |
| Other EPA IDs (FRS) | RCRA handler MDD982579427; ICIS-AIR source MD0000002403102063 |
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
- 20Pollutants on file
- 0Under a numeric limit
- 20With a violation of any kind
- 0With 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 |
|---|---|---|---|---|---|
| Arsenic total, dry weight, sludge | 0 | 148 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 0 | 148 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 0 | 148 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 0 | 148 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 0 | 148 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 0 | 148 | 0 | ||
| Copper, sludge, total, dry weight [as Cu] | 0 | 148 | 0 | ||
| Cadmium, sludge, total, dry weight [as Cd] | 0 | 148 | 0 | ||
| Selenium, sludge, total, dry weight [as Se] | 0 | 145 | 0 | ||
| Annual whole sludge application rate | 0 | 39 | 0 | ||
| Pollutant table from 503.13 | 0 | 35 | 0 | ||
| Level of pathogen requirements achieved | 0 | 35 | 0 | ||
| Description of pathogen option used | 0 | 35 | 0 | ||
| Vector attraction reduction alternative used | 0 | 35 | 0 | ||
| Ann. amt sludge disposed by other method | 0 | 2 | 0 | ||
| Annual amt of sludge incinerated | 0 | 1 | 0 | ||
| Annual sludge production, total | 0 | 1 | 0 | ||
| Annual amount of sludge land applied | 0 | 1 | 0 | ||
| Annual amt. sludge disposed surface unit | 0 | 1 | 0 | ||
| Annual amt sludge disposed in landfill | 0 | 1 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MDL021491.
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 MDL021491.
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 MDL021491 there.
Nearby on the register
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- Every permit record in Maryland, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.