Clean Water Act discharge permit · NPDES MTG580032

EUREKA SEWAGE TREATMENT, Eureka, MT: NPDES MTG580032 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
10Pollutants under a numeric limit
1Pollutants with an effluent exceedance

EUREKA SEWAGE TREATMENT, held by TOWN OF EUREKA, holds NPDES permit MTG580032, which discharges to Tobacco River. EPA’s file records it issued November 1, 1999 and expiring September 30, 2004. 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	EUREKA SEWAGE TREATMENT
Permittee as filed	TOWN OF EUREKA
NPDES ID	MTG580032
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	Publicly owned treatment works
Program	Publicly owned treatment works
Issued	November 1, 1999
Expiration date	September 30, 2004
Issuing agency	MONTANA DEQ
Address	Eureka, MT 59917
Receiving water	TOBACCO RIVER
Subwatershed	Tobacco River (HUC 170101010306)
SIC	4952 – Sewerage Systems

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.

Effluent limits and exceedances

11Pollutants on file
10Under a numeric limit
10With a violation of any kind
1With 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
BOD, 5-day, 20 deg. C	1	2	1	May 31, 2014	27% over the limit
Duration of discharge	1	3	0
Nitrogen, total [as N]	1	2	0
Nitrogen, ammonia total [as N]	1	2	0
Nitrogen, Kjeldahl, total [as N]	1	2	0
Nitrite + Nitrate total [as N]	1	2	0
Phosphorus, total [as P]	1	2	0
Flow rate	1	1	0
Solids, total suspended	1	1	0
Temperature, water deg. centigrade	0	1	0
Coliform, fecal general	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 MTG580032.

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 MTG580032 there.

Nearby on the register

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

This public-records page covers NPDES permit MTG580032 for EUREKA SEWAGE TREATMENT in Eureka, MT, held by TOWN OF EUREKA and discharging to the Tobacco River, with the permit administratively continued past its September 30, 2004 expiration. The page lists 10 pollutants under a numeric limit and 1 pollutant with an effluent exceedance.