Clean Water Act discharge permit · NPDES MDG766837

HADLEY FARMS HOA, Gaithersburg, MD: NPDES MDG766837 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
10Pollutants under a numeric limit
0Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

HADLEY FARMS HOA holds NPDES permit MDG766837, which discharges to Cabin Branch, Great Seneca Creek. EPA’s file records it issued March 8, 2024 and expiring November 30, 2027.

HADLEY FARMS HOA, Gaithersburg, Maryland: Coverage under a general permit MDG766837; Effective; issued March 8, 2024, term to November 30, 2027, by MARYLAND DEPARTMENT OF THE ENVIRONMENT; discharges to CABIN BRANCH, GREAT SENECA CREEK.

Oxygen demand, dissolved: 8 limits, 0 violations of any kind, 0 effluent exceedances.
pH: 8 limits, 0 violations of any kind, 0 effluent exceedances.
Flow: 8 limits, 0 violations of any kind, 0 effluent exceedances.
Copper, total [as Cu]: 4 limits, 0 violations of any kind, 0 effluent exceedances.
Silver, total [as Ag]: 4 limits, 0 violations of any kind, 0 effluent exceedances.
Chlorine, total residual: 4 limits, 0 violations of any kind, 0 effluent exceedances.
Cyanuric acid: 4 limits, 0 violations of any kind, 0 effluent exceedances.
Poly[hexamethylenebiguanide] hydrochloride: 4 limits, 0 violations of any kind, 0 effluent exceedances.
Bromine, reported as the element: 4 limits, 0 violations of any kind, 0 effluent exceedances.
Turbidity: 2 limits, 0 violations of any kind, 0 effluent exceedances.

HADLEY FARMS HOA among its neighbors

EPA’s permit file holds 21 discharge permits in the Great Seneca Creek subwatershed (HUC 020700080802), MDG766837 among them. Its county holds 146, 3 of them major permits; MDG766837 is a minor permit.

Other permits in the Great Seneca Creek subwatershed (HUC 020700080802)

ASBURY METHODIST HOME INC., Gaithersburg: MDG870156, minor permit, permit term to March 31, 2025
CONCRETE GENERAL, INC, Gaithersburg: MD0072214, minor permit, permit term to June 30, 2026
DAMASCUS GARDENS APTS., Damascus: MDG767335, minor permit, discharging to MAGRUDER BRANCH, permit term to November 30, 2027
DAMASCUS WATER RESOURCE RECOVERY FACILITY, Damascus: MD0020982, major permit, discharging to MAGRUDER BRANCH -TRIB. TO SENECA CR, permit term to May 31, 2021
DAMASCUS WWTP, Damascus: MDL020982, minor permit, permit term to December 31, 2025
EDINBURG VILLAGE, Gaithersburg: MDG767305, minor permit, permit term to November 30, 2027
EMERGENT BIOSOLUTIONS ORODUCT DEVELOPMENT, Gaithersburg: MDR003697, minor permit, permit term to December 31, 2027
FARMINGDALE CONDOMINIUM, Germantown: MDG767304, minor permit, discharging to UT TO GUNNERS BRANCH I-P, permit term to November 30, 2027
GREEN FARM MAINTENANCE FACILITY, Gaithersburg: MDR003752, minor permit, discharging to SENECA CREEK, permit term to January 31, 2028
LGC CLINICAL DIAGNOSTICS, INC., Gaithersburg: MDR003689, minor permit, permit term to December 31, 2027

What the register holds for HADLEY FARMS HOA: its NPDES ID, its permit type and status, its dates, its address in Gaithersburg, Maryland, its receiving water, and 10 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MDG766837.

Identity

Facility as filed	HADLEY FARMS HOA
Permittee as filed	HADLEY FARMS HOA
NPDES ID	MDG766837
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	March 8, 2024
Expiration date	November 30, 2027
Issuing agency	MARYLAND DEPARTMENT OF THE ENVIRONMENT
Address	Gaithersburg, MD 20855
Receiving water	CABIN BRANCH, GREAT SENECA CREEK
Receiving water impaired	303(D) Listed
Subwatershed	Great Seneca Creek (HUC 020700080802)

Effluent limits and exceedances

10Pollutants on file
10Under a numeric limit
0With a violation of any kind
0With 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 demand, dissolved	8	0	0
pH	8	0	0
Flow	8	0	0
Copper, total [as Cu]	4	0	0
Silver, total [as Ag]	4	0	0
Chlorine, total residual	4	0	0
Cyanuric acid	4	0	0
Poly[hexamethylenebiguanide] hydrochloride	4	0	0
Bromine, reported as the element	4	0	0
Turbidity	2	0	0

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MDG766837.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES MDG766837.

Inspections

EPA’s inspection file holds no inspection for NPDES MDG766837.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES MDG766837.

Watch this permit

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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

This public-records page covers Clean Water Act discharge permit NPDES MDG766837, held by HADLEY FARMS HOA in Gaithersburg, MD, which discharges to Cabin Branch, Great Seneca Creek. The page lists the permit as Effective, a Minor Discharger class with 10 pollutants under a numeric limit and 0 pollutants with an effluent exceedance. The permit was issued March 8, 2024 and expires November 30, 2027.