Clean Water Act discharge permit · NPDES GAG200021

MILL SHOALS HYDRO COMPANY, Conyers, GA: NPDES GAG200021 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
3Pollutants under a numeric limit
1Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

MILL SHOALS HYDRO COMPANY, held by Mill Shoals Hydro Company, LLC, holds NPDES permit GAG200021. EPA’s file records it issued September 1, 2015 and expiring August 31, 2020.

MILL SHOALS HYDRO COMPANY, Conyers, Georgia: Coverage under a general permit GAG200021, held by Mill Shoals Hydro Company, LLC; Effective; issued September 1, 2015, term to August 31, 2020.

pH: 2 limits, 15 violations of any kind, 1 effluent exceedance, latest November 30, 2020.
Flow, in conduit or thru treatment plant: 2 limits, 14 violations of any kind, 0 effluent exceedances.
Temperature, water deg. fahrenheit: 1 limit, 7 violations of any kind, 0 effluent exceedances.

MILL SHOALS HYDRO COMPANY among its neighbors

EPA’s permit file holds 639 discharge permits in the Little Suwanee Creek-Yellow River subwatershed (HUC 030701030301), GAG200021 among them.

Other permits in the Little Suwanee Creek-Yellow River subwatershed (HUC 030701030301)

1 CABIN DRIVE DEVELOPMENT, Conley: GAR18C1C4, minor permit, permit term to July 31, 2028
1001 MOSELEY ROAD - TRACT 3, Stockbridge: GAR397746, minor permit, permit term to July 31, 2028
1009 MOSELEY ROAD - TRACT 1, Stockbridge: GAR397744, minor permit, permit term to July 31, 2028
1303 LITHONIA INDUSTRIAL BLVD, Lithonia: GAR18C262, minor permit, permit term to July 31, 2028
1420 AZALEA DRIVE, LOT 3, Lawrenceville: GAR18BD88, minor permit, permit term to July 31, 2028
14300 HOPEWELL ROAD, Alpharetta: GAR18C2EF, minor permit, permit term to July 31, 2028
1540 SIKES ROAD, Statham: GAR3976AC, minor permit, permit term to July 31, 2028
1632 HOWELL BRIDGE RD, Ball Ground: GAR18C252, minor permit, permit term to July 31, 2028
1861 BLACK BEAR TRAIL, Big Canoe: GAR18C26E, minor permit, permit term to July 31, 2028
2178 NE HILLWOOD DR LOT 694-697, Conyers: GAR3976C5, minor permit, permit term to July 31, 2028

Identity

Facility as filed	MILL SHOALS HYDRO COMPANY
Permittee as filed	Mill Shoals Hydro Company, LLC
NPDES ID	GAG200021
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	September 1, 2015
Expiration date	August 31, 2020
Address	Conyers, GA 30012
Receiving water impaired	303(D) Listed
Subwatershed	Little Suwanee Creek-Yellow River (HUC 030701030301)

Effluent limits and exceedances

3Pollutants on file
3Under a numeric limit
3With 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
pH	2	15	1	November 30, 2020
Flow, in conduit or thru treatment plant	2	14	0
Temperature, water deg. fahrenheit	1	7	0

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES GAG200021.

Inspections

EPA’s inspection file holds no inspection for NPDES GAG200021.

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 GAG200021.

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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

This public-records page covers NPDES permit GAG200021, held by Mill Shoals Hydro Company, LLC for its facility in Conyers, GA, a minor discharger under an effective general permit coverage. The facts list 3 pollutants on file, 3 under a numeric limit, 3 with a violation of any kind, and 1 with an effluent exceedance, within the Little Suwanee Creek-Yellow River subwatershed (HUC 030701030301).