Clean Water Act discharge permit · NPDES MD0055352
TWIN CITIES WWTP, Secretary, MD: NPDES MD0055352 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 15Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
TWIN CITIES WWTP holds NPDES permit MD0055352, which discharges to Warwick River. EPA’s file records it issued August 30, 2017 and expiring September 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 | TWIN CITIES WWTP |
|---|---|
| Permittee as filed | TWIN CITIES WWTP |
| NPDES ID | MD0055352 |
| 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 | August 30, 2017 |
| Expiration date | September 30, 2022 |
| Issuing agency | MD DEPARTMENT OF THE ENVIRONMENT |
| Address | Secretary, MD 21664 |
| Receiving water | WARWICK RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Warwick River-Choptank River (HUC 020600050501) |
| 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
- 18Pollutants on file
- 15Under a numeric limit
- 17With 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 |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 8 | 46 | 23 | February 29, 2016 | 79% over the limit |
| Coliform, fecal general | 1 | 25 | 8 | June 30, 2026 | 507% over the limit |
| pH | 2 | 14 | 4 | July 31, 2007 | |
| Flow, in conduit or thru treatment plant | 4 | 38 | 3 | December 31, 2003 | 15% over the limit |
| Nitrogen, ammonia total [as N] | 6 | 9 | 2 | August 31, 2023 | 23% over the limit |
| Solids, total suspended | 4 | 45 | 0 | ||
| Phosphorous, in total orthophosphate | 4 | 35 | 0 | ||
| Nitrogen, total [as N] | 5 | 16 | 0 | ||
| Phosphorus, total [as P] | 4 | 14 | 0 | ||
| Flow, total | 2 | 14 | 0 | ||
| Solids, suspended percent removal | 0 | 11 | 0 | ||
| Nitrogen, organic total [as N] | 4 | 9 | 0 | ||
| Nitrite + Nitrate total [as N] | 4 | 9 | 0 | ||
| Oxygen, dissolved [DO] | 2 | 6 | 0 | ||
| Chlorine, total residual | 1 | 5 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 0 | 1 | 0 | ||
| BOD, 5-day, percent removal | 0 | 1 | 0 | ||
| Phosphate, total [as PO4] | 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 MD0055352.
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 MD0055352 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.