Clean Water Act discharge permit · NPDES ID0027642

MOUNTAIN HOME AIR FORCE BASE - WWTP, Mountain Home, ID: NPDES ID0027642 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
12Pollutants under a numeric limit
2Pollutants with an effluent exceedance

MOUNTAIN HOME AIR FORCE BASE - WWTP, held by DEFENSE, AIR FORCE, holds NPDES permit ID0027642, which discharges to Canyon Creek Via Unnamed Ditch. EPA’s file records it issued January 29, 1997 and expiring February 28, 2002. 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	MOUNTAIN HOME AIR FORCE BASE - WWTP
Permittee as filed	DEFENSE, AIR FORCE
NPDES ID	ID0027642
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Federal facility
Issued	January 29, 1997
Expiration date	February 28, 2002
Address	Mountain Home, ID 83648
Receiving water	CANYON CREEK VIA UNNAMED DITCH
Subwatershed	Mountain Home Airforce Base (HUC 170501011006)
NAICS	221320 – Sewage Treatment Facilities
SIC	4952 – Sewerage Systems
Other EPA IDs (FRS)	RCRA handler ID3572124557; ICIS-AIR source ID0000001603900001

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

12Pollutants on file
12Under a numeric limit
4With 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
Chlorine, total residual	2	6	6	March 31, 1998	3,713% over the limit
Oxygen, dissolved [DO]	1	1	1	November 30, 1997	10% over the limit
BOD, 5-day, 20 deg. C	5	9	0
Solids, total suspended	5	6	0
pH	2	0	0
Nitrogen, ammonia total [as N]	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
Flow, in conduit or thru treatment plant	1	0	0
BOD, 5-day, percent removal	1	0	0
Solids, suspended percent removal	1	0	0

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 ID0027642.

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

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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 ID0027642 there.

Nearby on the register

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

This public-records page covers NPDES permit ID0027642 for the Mountain Home Air Force Base wastewater treatment plant in Mountain Home, ID, held by Defense, Air Force, which discharges to Canyon Creek via Unnamed Ditch. The page lists a permit status of administratively continued, a Minor discharger class, 12 pollutants under a numeric limit, and 2 pollutants with an effluent exceedance, with the permit recorded as issued January 29, 1997 and expiring February 28, 2002.