Clean Water Act discharge permit · NPDES MD0055425
OLD SOUTH MOUNTAIN INN WWTP, Boonsboro, MD: NPDES MD0055425 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 11Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
OLD SOUTH MOUNTAIN INN WWTP holds NPDES permit MD0055425, which discharges to Trib Of Catoctin Creek. EPA’s file records it issued November 1, 2024 and expiring October 31, 2029. 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 | OLD SOUTH MOUNTAIN INN WWTP |
|---|---|
| Permittee as filed | OLD SOUTH MOUNTAIN INN WWTP |
| NPDES ID | MD0055425 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | November 1, 2024 |
| Expiration date | October 31, 2029 |
| Issuing agency | MD DEPARTMENT OF THE ENVIRONMENT |
| Address | Boonsboro, MD 21713 |
| Receiving water | TRIB OF CATOCTIN CREEK |
| Subwatershed | Dog Creek-Little Antietam Creek (HUC 020700041008) |
| SIC | 5812 – Eating Places |
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
- 12Pollutants on file
- 11Under a numeric limit
- 10With 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 |
|---|---|---|---|---|---|
| Oxygen, dissolved [DO] | 1 | 194 | 93 | October 31, 2012 | 102% over the limit |
| Solids, total suspended | 4 | 130 | 6 | January 31, 2020 | 178% over the limit |
| Coliform, fecal general | 0 | 41 | 5 | March 31, 2008 | 795% over the limit |
| BOD, 5-day, 20 deg. C | 4 | 128 | 4 | February 28, 2022 | 93% over the limit |
| Nitrogen, ammonia total [as N] | 16 | 114 | 2 | June 30, 2013 | 238% over the limit |
| pH | 2 | 67 | 2 | December 31, 2000 | |
| Flow, in conduit or thru treatment plant | 2 | 58 | 1 | November 30, 1998 | 78% over the limit |
| Chlorine, total residual | 1 | 26 | 0 | ||
| E. coli | 1 | 14 | 0 | ||
| Temperature, water deg. fahrenheit | 2 | 6 | 0 | ||
| BOD, 5-day, percent removal | 1 | 0 | 0 | ||
| Solids, suspended percent removal | 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 MD0055425.
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, MD0055425.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
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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 MD0055425 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.