Clean Water Act discharge permit · NPDES MD0065439
MILL BOTTOM WWTP, Frederick, MD: NPDES MD0065439 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 13Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
MILL BOTTOM WWTP holds NPDES permit MD0065439, which discharges to Middle Potomac River. EPA’s file records it issued April 14, 2017 and expiring April 30, 2022. 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 | MILL BOTTOM WWTP |
|---|---|
| Permittee as filed | MILL BOTTOM WWTP |
| NPDES ID | MD0065439 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | April 14, 2017 |
| Expiration date | April 30, 2022 |
| Issuing agency | MDE |
| Address | Frederick, MD 21771 |
| Receiving water | MIDDLE POTOMAC RIVER |
| Subwatershed | Bush Creek (HUC 020700090701) |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 16Pollutants on file
- 13Under a numeric limit
- 13With 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 |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 8 | 43 | 43 | May 31, 2020 | 273% over the limit |
| Nitrogen, ammonia total [as N] | 8 | 27 | 23 | January 31, 2026 | 188% over the limit |
| Nitrogen, Kjeldahl, total [as N] | 0 | 49 | 21 | October 31, 2006 | 253% over the limit |
| Solids, total suspended | 6 | 19 | 16 | February 29, 2016 | 511% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 7 | 5 | February 29, 2004 | 80% over the limit |
| E. coli | 1 | 2 | 1 | December 31, 2014 | 27% over the limit |
| pH | 2 | 1 | 1 | May 31, 1999 | |
| Phosphorus, total [as P] | 4 | 4 | 0 | ||
| Chlorine, total residual | 1 | 3 | 0 | ||
| Nitrite + Nitrate total [as N] | 2 | 2 | 0 | ||
| Phosphorous, in total orthophosphate | 2 | 2 | 0 | ||
| BOD, 5-day, percent removal | 0 | 1 | 0 | ||
| Solids, suspended percent removal | 0 | 1 | 0 | ||
| Nitrogen, total [as N] | 4 | 0 | 0 | ||
| Nitrogen, organic total [as N] | 2 | 0 | 0 | ||
| Oxygen, dissolved [DO] | 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 MD0065439.
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
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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 MD0065439 there.
Nearby on the register
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- Every permit record in Frederick, 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.