Clean Water Act discharge permit · NPDES MDG766028
WHETSTONE, Montgomery Village, MD: NPDES MDG766028 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
WHETSTONE, held by Montgomery Village Foundation, Inc, holds NPDES permit MDG766028, which discharges to Whetstone Run - Seneca Creek. EPA’s file records it issued October 1, 2022 and expiring November 30, 2027. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | WHETSTONE |
|---|---|
| Permittee as filed | Montgomery Village Foundation, Inc |
| NPDES ID | MDG766028 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | October 1, 2022 |
| Expiration date | November 30, 2027 |
| Issuing agency | MARYLAND DEPARTMENT OF THE ENVIRONMENT |
| Address | Montgomery Village, MD 20886 |
| Receiving water | WHETSTONE RUN - SENECA CREEK |
| Subwatershed | Great Seneca Creek (HUC 020700080802) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 10Pollutants on file
- 0Under a numeric limit
- 10With a violation of any kind
- 1With 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 |
|---|---|---|---|---|---|
| Silver, total [as Ag] | 0 | 10 | 2 | September 30, 2013 | 99,999% over the limit |
| Flow, in conduit or thru treatment plant | 0 | 121 | 0 | ||
| pH | 0 | 84 | 0 | ||
| Cyanuric acid | 0 | 58 | 0 | ||
| Chlorine, total residual | 0 | 51 | 0 | ||
| Turbidity | 0 | 41 | 0 | ||
| Flow | 0 | 21 | 0 | ||
| Copper, total [as Cu] | 0 | 9 | 0 | ||
| Poly[hexamethylenebiguanide] hydrochloride | 0 | 8 | 0 | ||
| Bromine, reported as the element | 0 | 8 | 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 MDG766028.
Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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 MDG766028 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.