Clean Water Act discharge permit · NPDES IDR05J11W

NORTHWEST BUILDING SYSTEMS, Boise, ID: NPDES IDR05J11W discharge permit, effluent exceedances, inspections, penalties

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

NORTHWEST BUILDING SYSTEMS, held by Northwest Building Systems, holds NPDES permit IDR05J11W. EPA’s file records it issued January 15, 2021 and expiring February 28, 2026. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	NORTHWEST BUILDING SYSTEMS
Permittee as filed	Northwest Building Systems
NPDES ID	IDR05J11W
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Program	Industrial stormwater
Issued	January 15, 2021
Expiration date	February 28, 2026
Address	Boise, ID 83716
Subwatershed	Fivemile Creek (HUC 170501140202)
NAICS	321991 – Manufactured Home [Mobile Home] Manufacturing
SIC	2451 – Mobile Homes
Other EPA IDs (FRS)	RCRA handler IDD984672451

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

2Pollutants on file
2Under a numeric limit
2With 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
Solids, total suspended	2	2	0
Chemical Oxygen Demand [COD]	2	2	0

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES IDR05J11W.

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 IDR05J11W.

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, IDR05J11W.

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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 IDR05J11W there.

Nearby on the register

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

This public-records page covers Clean Water Act NPDES permit IDR05J11W, held by NORTHWEST BUILDING SYSTEMS in Boise, ID, under the industrial stormwater program as a minor discharger, class 2, with status administratively continued. The page lists 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance, with the permit issued January 15, 2021 and expiring February 28, 2026 as of October 14, 2026.