Clean Water Act discharge permit · NPDES MTG770107
GENERAL MILLS GREAT FALLS FLOUR MILL, Great Falls, MT: NPDES MTG770107 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 4Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
GENERAL MILLS GREAT FALLS FLOUR MILL, held by GENERAL MILLS OPERATIONS INC, holds NPDES permit MTG770107, which discharges to Unknown. EPA’s file records it issued February 11, 2022 and expiring December 31, 2025. 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 | GENERAL MILLS GREAT FALLS FLOUR MILL |
|---|---|
| Permittee as filed | GENERAL MILLS OPERATIONS INC |
| NPDES ID | MTG770107 |
| 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 | February 11, 2022 |
| Expiration date | December 31, 2025 |
| Address | Great Falls, MT 59401 |
| Receiving water | UNKNOWN |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Missouri River-Great Falls (HUC 100301021201) |
| Other EPA IDs (FRS) | RCRA handler MTD006238117 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 4Pollutants on file
- 4Under a numeric limit
- 3With 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 |
|---|---|---|---|---|---|
| Chlorine, total residual | 6 | 5 | 1 | January 31, 2023 | 1,400% over the limit |
| pH | 6 | 2 | 0 | ||
| Solids, total suspended | 3 | 1 | 0 | ||
| Flow rate | 6 | 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 MTG770107.
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 MTG770107 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.