Clean Water Act discharge permit · NPDES MTG580047

TOWN OF HYSHAM, Hysham, MT: NPDES MTG580047 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
10Pollutants under a numeric limit
0Pollutants with an effluent exceedance

TOWN OF HYSHAM holds NPDES permit MTG580047, which discharges to Box Elder Creek. EPA’s file records it issued December 31, 2020 and expiring December 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	TOWN OF HYSHAM
Permittee as filed	TOWN OF HYSHAM
NPDES ID	MTG580047
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
Issued	December 31, 2020
Expiration date	December 31, 2022
Address	Hysham, MT 59038
Receiving water	BOX ELDER CREEK
Subwatershed	Box Elder Creek (HUC 101000010306)

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

Effluent limits and exceedances

11Pollutants on file
10Under a numeric limit
11With 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
BOD, 5-day, 20 deg. C	12	136
Solids, total suspended	8	92
Flow rate	4	48
E. coli, MTEC-MF	8	46
pH	4	46
Oil & Grease	3	34
BOD, 5-day, percent removal	2	23
Oil and grease visual	2	23
Duration	2	20
Duration of discharge	1	13
Chlorine, total residual	0	4

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MTG580047.

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

4Single-event violations

Date	What EPA recorded	Agency
September 26, 2025	Management Practice Violations - Improper Operation and Maintenance	ST6
September 26, 2025	Reporting Violations - Failure to Submit DMRs	ST6
September 26, 2025	Effluent Violations - Unauthorized Discharge	ST6
September 26, 2025	Management Practice Violations - Failure to Conduct Inspections	ST6

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, MTG580047.

Start the watch

How we handle your data → Privacy

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 MTG580047 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 MTG580047, held by TOWN OF HYSHAM in Hysham, MT, which discharges to BOX ELDER CREEK within the Box Elder Creek subwatershed (HUC 101000010306). The permit status is listed as administratively continued, with a permit class of Minor, 10 pollutants under a numeric limit, 11 pollutants on file, and 0 pollutants with an effluent exceedance.