Clean Water Act discharge permit · NPDES MTG580016
TOWN OF GERALDINE WWTF, Geraldine, MT: NPDES MTG580016 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
TOWN OF GERALDINE WWTF, held by TOWN OF GERALDINE, holds NPDES permit MTG580016, which discharges to Flat Creek. EPA’s file records it issued January 30, 2018 and expiring December 31, 2022. 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 | TOWN OF GERALDINE WWTF |
|---|---|
| Permittee as filed | TOWN OF GERALDINE |
| NPDES ID | MTG580016 |
| 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 | January 30, 2018 |
| Expiration date | December 31, 2022 |
| Address | Geraldine, MT 59446 |
| Receiving water | FLAT CREEK |
| Subwatershed | Flat Creek-Geraldine (HUC 100401020503) |
| 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
- 20Pollutants on file
- 9Under a numeric limit
- 20With 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 |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 6 | 117 | 57 | May 31, 2025 | 287% over the limit |
| Solids, total suspended | 4 | 87 | 45 | March 31, 2026 | 14,200% over the limit |
| BOD, 5-day, percent removal | 1 | 33 | 21 | March 31, 2026 | 99,999% over the limit |
| pH | 2 | 26 | 15 | February 28, 2026 | |
| E. coli, MTEC-MF | 4 | 22 | 10 | June 30, 2021 | 99,999% over the limit |
| Solids, suspended percent removal | 0 | 4 | 1 | April 30, 2017 | 994% over the limit |
| Flow rate | 0 | 17 | 0 | ||
| Flow rate | 2 | 12 | 0 | ||
| Duration of discharge | 1 | 12 | 0 | ||
| Phosphorus, total [as P] | 0 | 12 | 0 | ||
| Nitrogen, total [as N] | 0 | 11 | 0 | ||
| Nitrogen, ammonia total [as N] | 0 | 11 | 0 | ||
| Nitrite + Nitrate total [as N] | 0 | 11 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 0 | 9 | 0 | ||
| Oil & Grease | 2 | 8 | 0 | ||
| Chlorine, total residual | 0 | 4 | 0 | ||
| Oil and grease visual | 1 | 3 | 0 | ||
| Coliform, fecal general | 0 | 3 | 0 | ||
| Temperature, water deg. centigrade | 0 | 1 | 0 | ||
| Oil and grease, hexane extr method | 0 | 1 | 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
- 10Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| January 15, 2026 | Effluent Violations - Numeric effluent violation | ST6 |
| January 15, 2026 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| January 15, 2026 | Management Practice Violations - Failure to Conduct Inspections | ST6 |
| January 15, 2026 | Effluent Violations - Unauthorized Discharge | ST6 |
| January 15, 2026 | Management Practice Violations - Failure to Maintain Records | ST6 |
| January 15, 2026 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| August 18, 2022 | Monitoring Violations - Frequency of Sampling Violation | ST6 |
| August 18, 2022 | Effluent Violations - Unauthorized Discharge | ST6 |
| August 18, 2022 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| August 18, 2022 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | 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, MTG580016.
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- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
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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 MTG580016 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.