Clean Water Act discharge permit · NPDES PAC510344

CHESTNUT HILL EAST STA, Philadelphia, PA: NPDES PAC510344 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
0Pollutants under a numeric limit
0Pollutants with an effluent exceedance

CHESTNUT HILL EAST STA, held by SEPTA, holds NPDES permit PAC510344, which discharges to Unnamed Stream. EPA’s file records it issued February 7, 2025 and expiring December 7, 2029. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

What the register holds for CHESTNUT HILL EAST STA: its NPDES ID, its permit type and status, its dates, its address in Philadelphia, Pennsylvania, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES PAC510344.

Identity

Facility as filed	CHESTNUT HILL EAST STA
Permittee as filed	SEPTA
NPDES ID	PAC510344
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	February 7, 2025
Expiration date	December 7, 2029
Issuing agency	State Environmental Organization
Address	Philadelphia, PA 19118
Receiving water	Unnamed Stream
Subwatershed	Lower Wissahickon Creek (HUC 020402030902)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

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 PAC510344.

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES PAC510344.

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

Watch this permit

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, PAC510344.

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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID PAC510344 there.

Nearby on the register

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

The CHESTNUT HILL EAST STA permit, held by SEPTA in Philadelphia, Pennsylvania, is one of 74 general permit coverages in the city, and 9.5% of those 74 coverages have a violation on file, while this permit records none of the pollutants under a numeric limit or any effluent exceedance. Within the Lower Wissahickon Creek subwatershed, it is one of 15 NPDES permits, and 59.5% of the 74 Philadelphia general permit coverages were issued earlier than its February 7, 2025 issue date.