Clean Water Act discharge permit · NPDES ID0022063

NAMPA, CITY OF - NAMPA WWTP, Nampa, ID: NPDES ID0022063 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MajorDischarger class
30Pollutants under a numeric limit
6Pollutants with an effluent exceedance

NAMPA, CITY OF - NAMPA WWTP, held by NAMPA, CITY OF, holds NPDES permit ID0022063, which discharges to Indian Creek. EPA’s file records it issued December 29, 1998 and expiring February 2, 2004. 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.

Identity

Facility as filed	NAMPA, CITY OF - NAMPA WWTP
Permittee as filed	NAMPA, CITY OF
NPDES ID	ID0022063
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Major discharger
Facility type	Publicly owned treatment works
Program	Publicly owned treatment works
Issued	December 29, 1998
Expiration date	February 2, 2004
Issuing agency	U.S. EPA, REGION 10
Address	Nampa, ID 83687
Receiving water	INDIAN CREEK
Receiving water impaired	303(D) Listed
Subwatershed	Lower Indian Creek (HUC 170501140507)
Other EPA IDs (FRS)	RCRA handler IDD980739007; ICIS-AIR source ID0000001602700110

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

Effluent limits and exceedances

33Pollutants on file
30Under a numeric limit
18With a violation of any kind
6With 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
Nitrogen, ammonia total [as N]	16	67	39	March 31, 2026	811% over the limit
Chlorine, total residual	4	16	7	May 31, 2020	410% over the limit
Coliform, fecal MF, MFC broth, 44.5 C	2	11	7	February 28, 2007	180% over the limit
E. coli, MTEC-MF	1	9	6	December 31, 2020	99,999% over the limit
Floating solids, waste or visible foam-visual	0	3	3	April 30, 2021
Phosphorus, total [as P]	1	1	1	August 31, 2022	2% over the limit
BOD, 5-day, 20 deg. C	6	12	0
Solids, total suspended	6	12	0
Temperature, water deg. centigrade	2	8	0
pH	2	4	0
Oxygen, dissolved percent saturation	2	2	0
Flow, in conduit or thru treatment plant	1	2	0
Toxicity [chronic], Ceriodaphnia dubia	1	2	0
Toxicity [chronic], Pimephales promelas [Fathead Minnow]	1	2	0
BOD, 5-day, percent removal	1	2	0
Solids, suspended percent removal	1	2	0
Nitrogen, total [as N]	0	2	0
Chromium, hexavalent dissolved [as Cr]	0	1	0
Oxygen, dissolved [DO]	2	0	0
Turbidity	1	0	0
Nitrogen, Kjeldahl, total [as N]	1	0	0
Nitrite + Nitrate total [as N]	1	0	0
Hardness, total [as CaCO3]	1	0	0
Arsenic, total recoverable	1	0	0
Nickel, total recoverable	1	0	0
Zinc, total recoverable	1	0	0
Cadmium, total recoverable	1	0	0
Lead, total recoverable	1	0	0
Chromium, total recoverable	1	0	0
Copper, total recoverable	1	0	0
Oil and grease	1	0	0
Phosphate, ortho [as P]	1	0	0
Mercury, total [as Hg]	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 ID0022063.

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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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 ID0022063 there.

Nearby on the register

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

This public-records page covers Clean Water Act NPDES permit ID0022063, held by NAMPA, CITY OF for the NAMPA WWTP in Nampa, ID, which discharges to Indian Creek and is listed as administratively continued with a Major Discharger class of 30 and 6 pollutants under a numeric limit. The page reports that 6 pollutants had an effluent exceedance, with the permit issued December 29, 1998 and expiring February 2, 2004, as of September 15, 2026.