Clean Water Act discharge permit · NPDES MTG580017
TOWN OF TERRY WWTF, Terry, MT: NPDES MTG580017 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
TOWN OF TERRY WWTF, held by TOWN OF TERRY, holds NPDES permit MTG580017, which discharges to Buffalo Rapids Drainage Ditch To Yellowstone River. EPA’s file records it issued January 17, 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 TERRY WWTF |
|---|---|
| Permittee as filed | TOWN OF TERRY |
| NPDES ID | MTG580017 |
| 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 17, 2018 |
| Expiration date | December 31, 2022 |
| Address | Terry, MT 59349 |
| Receiving water | BUFFALO RAPIDS DRAINAGE DITCH TO YELLOWSTONE RIVER |
| Subwatershed | Yellowstone River-Terry (HUC 101000040305) |
| 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
- 21Pollutants on file
- 9Under a numeric limit
- 21With 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 | 12 | 195 | 41 | March 31, 2026 | 106% over the limit |
| E. coli, MTEC-MF | 8 | 102 | 37 | July 31, 2024 | 77,678% over the limit |
| Solids, total suspended | 8 | 159 | 29 | March 31, 2026 | 221% over the limit |
| pH | 4 | 98 | 21 | June 30, 2024 | |
| BOD, 5-day, percent removal | 2 | 46 | 19 | November 30, 2025 | 440% over the limit |
| Solids, suspended percent removal | 0 | 4 | 3 | December 31, 2017 | 450% over the limit |
| Flow rate | 4 | 116 | 0 | ||
| Nitrogen, ammonia total [as N] | 0 | 70 | 0 | ||
| Nitrite + Nitrate total [as N] | 0 | 70 | 0 | ||
| Chlorine, total residual | 0 | 58 | 0 | ||
| Oil & Grease | 4 | 49 | 0 | ||
| Duration of discharge | 2 | 36 | 0 | ||
| Oil and grease visual | 2 | 36 | 0 | ||
| Nitrogen, total [as N] | 0 | 16 | 0 | ||
| Phosphorus, total [as P] | 0 | 16 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 0 | 10 | 0 | ||
| Temperature, water deg. fahrenheit | 0 | 8 | 0 | ||
| Temperature, water deg. centigrade | 0 | 6 | 0 | ||
| Flow rate | 0 | 2 | 0 | ||
| Oil and grease, hexane extr method | 0 | 2 | 0 | ||
| Coliform, fecal general | 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
- 5Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| November 2, 2020 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| November 2, 2020 | Monitoring Violations - Invalid/Unrepresentative Sample | ST6 |
| November 2, 2020 | Monitoring Violations - Frequency of Sampling Violation | ST6 |
| November 2, 2020 | Management Practice Violations - Failure to Conduct Inspections | ST6 |
| November 2, 2020 | Management Practice Violations - Failure to Maintain Records | ST6 |
Inspections
EPA’s inspection file holds no inspection for NPDES MTG580017.
Formal enforcement and penalties
0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
Informal enforcement
| Date | What EPA recorded | Agency |
|---|---|---|
| September 10, 2026 | Letter of Violation/ Warning Letter | State |
| August 11, 2026 | Letter of Violation/ Warning Letter | State |
| July 10, 2026 | Letter of Violation/ Warning Letter | State |
| June 10, 2026 | Letter of Violation/ Warning Letter | State |
| March 12, 2026 | Letter of Violation/ Warning Letter | State |
| January 30, 2026 | Letter of Violation/ Warning Letter | State |
| January 13, 2026 | Letter of Violation/ Warning Letter | State |
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, MTG580017.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
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 MTG580017 there.
Nearby on the register
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- Every permit record in Montana, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.