Clean Water Act discharge permit · NPDES MDR003575

POWER ELECTRONICS, INC., Millington, MD: NPDES MDR003575 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
2Pollutants under a numeric limit
0Pollutants with an effluent exceedance

POWER ELECTRONICS, INC., held by AZZ ENCLOSURE SYSTEMS/PEI, LLC, holds NPDES permit MDR003575, which discharges to Chester River. EPA’s file records it issued March 4, 2021 and expiring December 31, 2026. 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 POWER ELECTRONICS, INC.: its NPDES ID, its permit type and status, its dates, its address in Millington, Maryland, its receiving water, and 2 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MDR003575.

Identity

Facility as filed	POWER ELECTRONICS, INC.
Permittee as filed	AZZ ENCLOSURE SYSTEMS/PEI, LLC
NPDES ID	MDR003575
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	March 4, 2021
Expiration date	December 31, 2026
Issuing agency	MARYLAND DEPARTMENT OF THE ENVIRONMENT
Address	Millington, MD 21651
Receiving water	CHESTER RIVER
Subwatershed	Unicorn Branch (HUC 020600020403)
Other EPA IDs (FRS)	RCRA handler MDD985416163; ICIS-AIR source MD0000002403500100

Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

2Pollutants on file
2Under a numeric limit
0With a violation of any kind
0With 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
Nitrite + Nitrate total [as N]	1	0	0
Zinc, total [as Zn]	1	0	0

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MDR003575.

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 MDR003575.

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.

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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, MDR003575.

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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 MDR003575 there.

Nearby on the register

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

This public-records page covers Clean Water Act discharge permit NPDES MDR003575, held by POWER ELECTRONICS, INC. in Millington, Maryland, with the permit status listed as Effective and the discharger class as Minor. The register reports 0 pollutants with an effluent exceedance and 2 pollutants under a numeric limit, and it notes that EPA's files record no violation for this permit.