Clean Water Act discharge permit · NPDES NC0030210

MALLARD CREEK WWTP, Charlotte, NC: NPDES NC0030210 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MajorDischarger class
10Pollutants under a numeric limit
2Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

MALLARD CREEK WWTP, held by Charlotte Water, holds NPDES permit NC0030210. EPA’s file records it issued December 17, 2019 and expiring November 30, 2024.

MALLARD CREEK WWTP, Charlotte, North Carolina: Individual permit NC0030210, held by Charlotte Water; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued December 17, 2019, term to November 30, 2024; Sewage Treatment Facilities.

BOD, carbonaceous [5 day, 20 C]: 5 limits, 7 violations of any kind, 2 effluent exceedances, latest October 31, 2020, largest 13% over the limit.
Mercury, total [as Hg]: 0 limits, 1 violation of any kind, 1 effluent exceedance, latest October 31, 2004, largest 15,733% over the limit.
Nitrogen, ammonia total [as N]: 4 limits, 4 violations of any kind, 0 effluent exceedances.
Solids, total suspended: 3 limits, 4 violations of any kind, 0 effluent exceedances.
Flow, in conduit or thru treatment plant: 2 limits, 2 violations of any kind, 0 effluent exceedances.
Temperature, water deg. centigrade: 7 limits, 0 violations of any kind, 0 effluent exceedances.
Oxygen, dissolved [DO]: 7 limits, 0 violations of any kind, 0 effluent exceedances.
pH: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Coliform, fecal MF, MFC broth, 44.5 C: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Nitrogen, total [as N]: 1 limit, 0 violations of any kind, 0 effluent exceedances.
Phosphorus, total [as P]: 1 limit, 0 violations of any kind, 0 effluent exceedances.

North Carolina holds 95 Publicly owned treatment works coverages of this permit type in EPA’s file; 37 were issued before NC0030210. Charlotte Water holds 20 permits in North Carolina.

Other permits held by Charlotte Water

MCDOWELL CREEK WRRF, Huntersville: NC0036277, issued November 12, 2019
JOE C STOWE, JR., REGIONAL WRRF, Charlotte: NC0089630, issued November 4, 2019
MALLARD CREEK WRF - RELIABILITY & UV IMPROVEMENTS, Charlotte: NCC203066, issued April 1, 2024
STOWE REGIONAL WATER RESOURCES RECOVERY FACILITY, Charlotte: NCC224000, issued April 1, 2024
HUNTERSVILLE-CONCORD ROAD WATER MAIN EXTENSION, Huntersville: NCC251002, issued April 10, 2025
30 WATERMAIN REPLACEMENT PROJECT H - CATES STREET, Charlotte: NCC260521, issued March 16, 2026
12 WATERMAIN REPLACEMENT PROJECT N2- OLD STATESVILLE ROAD, Charlotte: NCC262148, issued August 3, 2026
TOBY CREEK BASIN SANITARY SEWER IMPROVEMENTS - PHASE 2 AND 3, Charlotte: NCC262393, issued August 24, 2026
REGIONAL SOLIDS CONVEYANCE PHASE 1A - PACKAGE 1, Charlotte: NCC263990, issued January 8, 2026
IRWIN CREEK WWTP, Charlotte: NCG110008, issued June 1, 2023

Coverages issued nearest NC0030210

November 4, 2019: JOE C STOWE, JR., REGIONAL WRRF, Charlotte, NC0089630, held by Charlotte Water
November 12, 2019: MCDOWELL CREEK WRRF, Huntersville, NC0036277, held by Charlotte Water
December 16, 2019: AURORA WWTP, Aurora, NC0021521, held by Town of Aurora
December 17, 2019: THIRD CREEK WWTP, Statesville, NC0020591, held by City of Statesville
December 17, 2019: SGWASA WWTP, Butner, NC0026824, held by South Granville Water & Sewer Authority
January 8, 2020: ST. PAULS WWTP, Saint Pauls, NC0020095, held by Town of St Pauls
January 16, 2020: YADKINVILLE WWTP, Yadkinville, NC0020338, held by Town of Yadkinville
January 21, 2020: MURPHY WWTP, Murphy, NC0020940, held by Town of Murphy
January 21, 2020: NEWPORT WWTP, Newport, NC0021555, held by Town of Newport
January 21, 2020: HILLSBOROUGH WWTP, Hillsborough, NC0026433, held by Town of Hillsborough

MALLARD CREEK WWTP among its neighbors

EPA’s permit file holds 57 discharge permits in the Rock Hole Creek-Rocky River subwatershed (HUC 030401050704), NC0030210 among them.

Other permits in the Rock Hole Creek-Rocky River subwatershed (HUC 030401050704)

ACADEMY, LLC, Charlotte: NCG080770, minor permit, permit term to June 30, 2026
AMAZON.COM SERVICES LLC - DLT3, Concord: NCG060413, minor permit, permit term to June 30, 2026
AMBLE DRIVE MATERIAL RECOVERY FACILITY, Charlotte: NCG130046, minor permit, permit term to May 31, 2023
BELL AVENUE TOWNHOMES, Locust: NCC251215, minor permit, permit term to March 31, 2029
BENDEL TANK AND HEAT EXCHANGER LLC, Charlotte: NCG030234, minor permit, permit term to June 30, 2026
BLUE DOT READI-MIX, LLC-HARRISBURG, Harrisburg: NCG140384, minor permit, permit term to June 30, 2022
BLYTHE BROTHERS ASPHALT-CONCORD PLANT, Concord: NCG160001, minor permit, permit term to May 31, 2024
BLYTHE CONSTRUCTION INC-CONCORD, Charlotte: NCG160117, minor permit, permit term to May 31, 2024
BRADFIELD FARMS WWTP, Charlotte: NC0064734, minor permit, permit term to November 30, 2023
CAMELLIA GARDENS, Harrisburg: NCC212998, minor permit, permit term to March 31, 2029

Identity

Facility as filed	MALLARD CREEK WWTP
Permittee as filed	Charlotte Water
NPDES ID	NC0030210
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Major discharger
Facility type	Publicly owned treatment works
Program	Publicly owned treatment works
Issued	December 17, 2019
Expiration date	November 30, 2024
Address	Charlotte, NC 28262
Subwatershed	Rock Hole Creek-Rocky River (HUC 030401050704)
Program components on file	Biosolids, POTW, Pretreatment
NAICS	221320 – Sewage Treatment Facilities
SIC	4952 – Sewerage Systems
Other EPA IDs (FRS)	RCRA handler NCD000821884

Effluent limits and exceedances

11Pollutants on file
10Under a numeric limit
5With a violation of any kind
2With 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
BOD, carbonaceous [5 day, 20 C]	5	7	2	October 31, 2020	13% over the limit
Mercury, total [as Hg]	0	1	1	October 31, 2004	15,733% over the limit
Nitrogen, ammonia total [as N]	4	4	0
Solids, total suspended	3	4	0
Flow, in conduit or thru treatment plant	2	2	0
Temperature, water deg. centigrade	7	0	0
Oxygen, dissolved [DO]	7	0	0
pH	2	0	0
Coliform, fecal MF, MFC broth, 44.5 C	2	0	0
Nitrogen, total [as N]	1	0	0
Phosphorus, total [as P]	1	0	0

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES NC0030210.

Inspections

EPA’s inspection file holds no inspection for NPDES NC0030210.

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 NC0030210.

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

This public-records page covers Clean Water Act NPDES permit NC0030210 for MALLARD CREEK WWTP, held by Charlotte Water, with a permit status of administratively continued and a Major Discharger class. The page lists 10 as the discharger class, 2 pollutants under a numeric limit, and 2 pollutants with an effluent exceedance, with the permit issued December 17, 2019 and expiring November 30, 2024.