Clean Water Act discharge permit · NPDES MT0021890

LODGE GRASS- TOWN OF, Lodge Grass, MT: NPDES MT0021890 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
12Pollutants under a numeric limit
7Pollutants with an effluent exceedance

LODGE GRASS- TOWN OF holds NPDES permit MT0021890, which discharges to Little Bighorn River. EPA’s file records it issued April 20, 2017 and expiring March 31, 2022. 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	LODGE GRASS- TOWN OF
Permittee as filed	LODGE GRASS- TOWN OF
NPDES ID	MT0021890
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Publicly owned treatment works
Program	Publicly owned treatment works
Issued	April 20, 2017
Expiration date	March 31, 2022
Issuing agency	U.S. EPA Region 8
Address	Lodge Grass, MT 59050
Receiving water	LITTLE BIGHORN RIVER
Subwatershed	Little Bighorn River-Sunday Creek (HUC 100800160401)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

16Pollutants on file
12Under a numeric limit
16With a violation of any kind
7With 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	2	341	123	June 30, 2026	367% over the limit
Solids, total suspended	2	263	37	June 30, 2026	8,900% over the limit
pH	2	241	18	November 30, 2024
E. coli	1	79	14	April 30, 2026	872,916% over the limit
BOD, 5-day, percent removal	0	4	4	April 30, 2026	71% over the limit
Coliform, fecal general	0	154	2	May 31, 2011	99,999% over the limit
Floating solids, waste or visible foam-visual	1	67	2	May 31, 2023
Flow	2	108	0
Oil & Grease	1	99	0
Flow, in conduit or thru treatment plant	0	79	0
Flow rate	0	66	0
Nitrogen, ammonia total [as N]	1	63	0
Oil and grease visual	1	59	0
Nitrogen, total [as N]	1	17	0
Nitrite + Nitrate total [as N]	1	17	0
Phosphorus, total [as P]	1	17	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 MT0021890.

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, MT0021890.

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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 MT0021890 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 MT0021890, held by LODGE GRASS- TOWN OF in Lodge Grass, MT, which discharges to the LITTLE BIGHORN RIVER. The permit is listed as administratively continued, with a minor discharger class, 12 pollutants under a numeric limit, and 7 pollutants with an effluent exceedance.