Clean Water Act discharge permit · NPDES MD0064530
SANDY HOOK WASTEWATER TREATMENT FACILITY, Sandy Hook, MD: NPDES MD0064530 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
SANDY HOOK WASTEWATER TREATMENT FACILITY, held by Washington County Department of Water Quality, holds NPDES permit MD0064530, which discharges to Potomac River Frederick County. EPA’s file records it issued April 25, 2017 and expiring May 31, 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 | SANDY HOOK WASTEWATER TREATMENT FACILITY |
|---|---|
| Permittee as filed | Washington County Department of Water Quality |
| NPDES ID | MD0064530 |
| 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 25, 2017 |
| Expiration date | May 31, 2022 |
| Issuing agency | MARYLAND DEPARTMENT OF THE ENVIRONMENT |
| Address | Sandy Hook, MD 21758 |
| Receiving water | POTOMAC RIVER FREDERICK COUNTY |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Piney Run-Potomac River (HUC 020700080202) |
| 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
- 11Pollutants on file
- 9Under a numeric limit
- 10With a violation of any kind
- 4With 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 | 83 | 80 | December 31, 2002 | 97% over the limit |
| Solids, total suspended | 4 | 37 | 28 | March 31, 2026 | 706% over the limit |
| Nitrogen, ammonia total [as N] | 8 | 34 | 26 | March 31, 2026 | 1,247% over the limit |
| BOD, 5-day, 20 deg. C | 4 | 21 | 11 | May 31, 2017 | 396% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 11 | 0 | ||
| pH | 2 | 4 | 0 | ||
| Chlorine, total residual | 1 | 2 | 0 | ||
| E. coli | 1 | 2 | 0 | ||
| BOD, 5-day, percent removal | 0 | 1 | 0 | ||
| Solids, suspended percent removal | 0 | 1 | 0 | ||
| Flow, total | 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 MD0064530.
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 MD0064530 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.