Clean Water Act discharge permit · NPDES MD0053511
LYONS CREEK MOBILE HOME ESTATE WWTP, Lothian, MD: NPDES MD0053511 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
LYONS CREEK MOBILE HOME ESTATE WWTP, held by LYONS CREEK MHC, LLC, holds NPDES permit MD0053511, which discharges to Lyons Creek Trib Of Patuxent Rv. EPA’s file records it issued November 24, 2020 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 | LYONS CREEK MOBILE HOME ESTATE WWTP |
|---|---|
| Permittee as filed | LYONS CREEK MHC, LLC |
| NPDES ID | MD0053511 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | November 24, 2020 |
| Expiration date | December 31, 2025 |
| Issuing agency | MDE |
| Address | Lothian, MD 20711 |
| Receiving water | LYONS CREEK TRIB OF PATUXENT RV |
| Subwatershed | Lyons Creek (HUC 020600060501) |
| SIC | 7033 – Trailer Parks And Campsites |
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
- 11Pollutants on file
- 8Under a numeric limit
- 11With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 4 | 127 | 53 | July 31, 2026 | 1,833% over the limit |
| Nitrogen, ammonia total [as N] | 4 | 73 | 35 | July 31, 2026 | 824% over the limit |
| BOD, 5-day, 20 deg. C | 4 | 92 | 18 | July 31, 2026 | 327% over the limit |
| pH | 2 | 39 | 7 | March 31, 2023 | |
| Oxygen, dissolved [DO] | 1 | 21 | 4 | July 31, 2026 | 28% over the limit |
| E. coli | 1 | 13 | 4 | November 30, 2023 | 248% over the limit |
| Solids, suspended percent removal | 0 | 7 | 1 | March 31, 2024 | 69% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 35 | 0 | ||
| Chlorine, total residual | 1 | 16 | 0 | ||
| Coliform, fecal general | 0 | 7 | 0 | ||
| BOD, 5-day, percent removal | 0 | 6 | 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 MD0053511.
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, MD0053511.
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 MD0053511 there.
Nearby on the register
- Discharge permits in Lothian
- Every permit record in Lothian, 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.