Clean Water Act discharge permit · NPDES PA0204889

HARMAR GARAGE PORT AUTH ALLEGHENY CNTY, Pittsburgh, PA: NPDES PA0204889 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
6Pollutants under a numeric limit
3Pollutants with an effluent exceedance
1Inspections on file
0Formal enforcement actions

HARMAR GARAGE PORT AUTH ALLEGHENY CNTY, held by ALLEGHENY CNTY PORT AUTH, holds NPDES permit PA0204889, which discharges to Deer Creek. EPA’s file records it issued January 16, 2020 and expiring January 31, 2025.

HARMAR GARAGE PORT AUTH ALLEGHENY CNTY, Pittsburgh, Pennsylvania: Individual permit PA0204889, held by ALLEGHENY CNTY PORT AUTH; Administratively continued (past its expiration date and still in force until reissued); issued January 16, 2020, term to January 31, 2025, by State Environmental Organization; discharges to Deer Creek.

Solids, total suspended: 4 limits, 18 violations of any kind, 10 effluent exceedances, latest February 28, 2026, largest 270% over the limit.
Iron, dissolved [as Fe]: 4 limits, 12 violations of any kind, 4 effluent exceedances, latest October 31, 2025, largest 243% over the limit.
Oil & Grease: 4 limits, 10 violations of any kind, 2 effluent exceedances, latest October 31, 2025, largest 61% over the limit.
Oxygen demand, chem. [high level] [COD]: 4 limits, 8 violations of any kind, 0 effluent exceedances.
pH: 4 limits, 8 violations of any kind, 0 effluent exceedances.
Flow, in conduit or thru treatment plant: 4 limits, 8 violations of any kind, 0 effluent exceedances.

May 8, 2026: Evaluation (S).

Other permits held by ALLEGHENY CNTY PORT AUTH

COLLIER GARAGE, Bridgeville: PA0204897, issued December 29, 2017
PORT AUTH ROSS MAINTENANCE GARAGE, Pittsburgh: PA0204901, issued January 24, 2020

HARMAR GARAGE PORT AUTH ALLEGHENY CNTY among its neighbors

EPA’s permit file holds 57 discharge permits in the Chartiers Run-Allegheny River subwatershed (HUC 050100090304), PA0204889 among them. Its county holds 695, 8 of them major permits; PA0204889 is a minor permit.

Other permits in the Chartiers Run-Allegheny River subwatershed (HUC 050100090304)

AGAN PARK FILL SITE, Springdale, Township Of: PAC020945, minor permit, permit term to February 28, 2027
ALLEGHENY VALLEY JOINT SEWAGE AUTHORITY WASTEWATER TREATMENT PLANT, Cheswick, Borough Of: PAD020037, minor permit, permit term to January 6, 2027
ALLEGHENY VALLEY JOINT SEWER A, Harmar, Township Of: PAL026255, minor permit, permit term to December 31, 2025
ALLEGHENY VLY JT SEW AUTH STP, Pittsburgh: PA0026255, major permit, discharging to Deer Creek, permit term to February 28, 2027
ALTIUM PACKAGING VERONA FAC, Verona: PAG036354, minor permit, discharging to Plum Creek, permit term to March 23, 2028
ARNOLD CITY SEW SYS, New Kensington: PAG136326, minor permit, discharging to Allegheny River, permit term to April 21, 2018
BLDG-14 EXTENSION AND BLDG-18, Cheswick, Borough Of: PAC021287, minor permit, permit term to December 7, 2029
BRACKENRIDGE BORO STORM SEW SYS MS4, Brackenridge: PAG136148, minor permit, discharging to Allegheny River, permit term to August 17, 2019
CHELSEA BLDG PRODS INC, Oakmont: PAG036322, minor permit, discharging to Allegheny River, permit term to March 23, 2028
CHESWICK BORO STORM SEW SYS MS4, Cheswick: PAG136322, minor permit, discharging to Allegheny River, permit term to January 28, 2019

Identity

Facility as filed	HARMAR GARAGE PORT AUTH ALLEGHENY CNTY
Permittee as filed	ALLEGHENY CNTY PORT AUTH
NPDES ID	PA0204889
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	January 16, 2020
Expiration date	January 31, 2025
Issuing agency	State Environmental Organization
Address	Pittsburgh, PA 15238
Receiving water	Deer Creek
Receiving water impaired	303(D) Listed
Subwatershed	Chartiers Run-Allegheny River (HUC 050100090304)
Other EPA IDs (FRS)	RCRA handler PAD981106313; ICIS-AIR source PAACH0004200300801

Effluent limits and exceedances

6Pollutants on file
6Under a numeric limit
6With a violation of any kind
3With 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
Solids, total suspended	4	18	10	February 28, 2026	270% over the limit
Iron, dissolved [as Fe]	4	12	4	October 31, 2025	243% over the limit
Oil & Grease	4	10	2	October 31, 2025	61% over the limit
Oxygen demand, chem. [high level] [COD]	4	8	0
pH	4	8	0
Flow, in conduit or thru treatment plant	4	8	0

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES PA0204889.

Inspections

Date	What EPA recorded	Agency
May 8, 2026	Evaluation	S

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 PA0204889.

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

This public-records page covers Clean Water Act NPDES permit PA0204889 for HARMAR GARAGE PORT AUTH ALLEGHENY CNTY in Pittsburgh, PA, which discharges to Deer Creek and is administratively continued. The page lists a discharger class of 6, 3 pollutants under a numeric limit, and 3 pollutants with an effluent exceedance.