Clean Water Act discharge permit · NPDES NCG110140

MOUNT AIRY WWTP, Mount Airy, NC: NPDES NCG110140 discharge permit, effluent exceedances, inspections, penalties

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

MOUNT AIRY WWTP, held by City of Mount Airy, holds NPDES permit NCG110140. EPA’s file records it issued June 1, 2023 and expiring May 31, 2028.

MOUNT AIRY WWTP, Mount Airy, North Carolina: Coverage under a general permit NCG110140, held by City of Mount Airy; Industrial stormwater; Effective; issued June 1, 2023, term to May 31, 2028.

North Carolina holds 3,311 Industrial stormwater coverages of this permit type in EPA’s file; 2,885 were issued before NCG110140. City of Mount Airy holds 5 permits in North Carolina.

Other permits held by City of Mount Airy

MOUNT AIRY WWTP, Mount Airy: NC0021121, issued September 28, 2020
SPENCER'S MILL SITE REDEVELOPMENT PHASE 3 IMPROVEMENTS, Mount Airy: NCC241965, issued July 16, 2024
GRANSTONE CONFERENCE CENTER, Mount Airy: NCC253224, issued October 28, 2025
CITY OF MOUNT AIRY, Mount Airy: NCL021121, issued January 1, 2021

Coverages issued nearest NCG110140

June 1, 2023: LINCOLNTON WWTP, Lincolnton, NCG110134, held by City of Lincolnton
June 1, 2023: CHERRYVILLE WWTP, Cherryville, NCG110135, held by City of Cherryville
June 1, 2023: BLACK RIVER WASTEWATER TREATMENT PLANT, Dunn, NCG110136, held by City of Dunn
June 1, 2023: RANDLEMAN WWTP, Randleman, NCG110138, held by City of Randleman
June 1, 2023: YADKIN VALLEY SEWER AUTHORITY WWTP, Elkin, NCG110139, held by Yadkin Valley Sewer Authority
June 1, 2023: ASHEBORO WWTP, Asheboro, NCG110141, held by City of Asheboro
June 1, 2023: MAYODAN WWTP, Mayodan, NCG110142, held by Town of Mayodan
June 1, 2023: REIDSVILLE WWTP, Reidsville, NCG110143, held by City of Reidsville
June 1, 2023: DENTON WWTP, Denton, NCG110144, held by Town of Denton
June 1, 2023: NORTHEAST WWTP, Conover, NCG110145, held by City of Conover

MOUNT AIRY WWTP among its neighbors

EPA’s permit file holds 25 discharge permits in the Little Yadkin River subwatershed (HUC 030401011005), NCG110140 among them. Its county holds 58, 0 of them major permits; NCG110140 is a minor permit.

Other permits in the Little Yadkin River subwatershed (HUC 030401011005)

0 MEADOWBROOK DRIVE, King: NCC243434, minor permit, permit term to March 31, 2029
ALEXANDER APARTMENTS, King: NCC231484, minor permit, permit term to March 31, 2029
ALTIUM PACKAGING - MT. AIRY, Mount Airy: NCG050432, minor permit, permit term to May 31, 2023
AMAZON.COM SERVICES LLC - WNC9, Mount Airy: NCG060466, minor permit, permit term to June 30, 2026
APPLEWOOD, Yadkin, Old Richmond: NCC240425, minor permit, permit term to March 31, 2029
CARPENTER CO, Mount Airy: NCG050172, minor permit, permit term to May 31, 2023
CENTRAL CARE WWTP, Mount Airy: NC0038822, minor permit, permit term to February 29, 2024
CK TECHNOLOGIES, Mount Airy: NCG050391, minor permit, permit term to May 31, 2023
CONCRETE SUPPLY CO - MOUNT AIRY PLANT, Mount Airy: NCG140012, minor permit, permit term to June 30, 2027
CONCRETE SUPPLY CO-KING PLANT, King: NCG140143, minor permit, permit term to June 30, 2022

What the register holds for MOUNT AIRY WWTP: its NPDES ID, its permit type and status, its dates, its address in Mount Airy, North Carolina. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES NCG110140.

Identity

Facility as filed	MOUNT AIRY WWTP
Permittee as filed	City of Mount Airy
NPDES ID	NCG110140
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Program	Industrial stormwater
Issued	June 1, 2023
Expiration date	May 31, 2028
Address	Mount Airy, NC 27030
Subwatershed	Little Yadkin River (HUC 030401011005)
SIC	4952 – Sewerage Systems
Other EPA IDs (FRS)	ICIS-AIR source NC0000003708600157

Effluent limits and exceedances

0Pollutants on file
0Under a numeric limit
0With a violation of any kind
0With an effluent exceedance

EPA’s limits and effluent violation files hold no pollutant row for NPDES NCG110140.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES NCG110140.

Inspections

EPA’s inspection file holds no inspection for NPDES NCG110140.

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 NCG110140.

Watch this permit

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Nearby on the register

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

The MOUNT AIRY WWTP storm water industrial permit is one of 27 such permits on EPA's NPDES register in Surry County, and it is one of 25 NPDES permits in the Little Yadkin River subwatershed. Of the Surry County storm water industrial permits, 88.9% were issued earlier than this one, and the permit records no pollutants under a numeric limit and no pollutants with an effluent exceedance.