Clean Water Act discharge permit · NPDES MTG589703
AZURE LAGOON, Box Elder, MT: NPDES MTG589703 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 10Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
AZURE LAGOON, held by Chippewa Cree Tribe Tribal Water Resources, holds NPDES permit MTG589703. EPA’s file records it issued April 25, 2016 and expiring December 31, 2020. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | AZURE LAGOON |
|---|---|
| Permittee as filed | Chippewa Cree Tribe Tribal Water Resources |
| NPDES ID | MTG589703 |
| 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 | April 25, 2016 |
| Expiration date | December 31, 2020 |
| Address | Box Elder, MT 59521 |
| Subwatershed | Boxelder Creek (HUC 100500050303) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 15Pollutants on file
- 10Under a numeric limit
- 15With 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 | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 2 | 28 | 0 | ||
| Solids, total suspended | 2 | 28 | 0 | ||
| pH | 2 | 24 | 0 | ||
| Temperature, water deg. centigrade | 2 | 21 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 21 | 0 | ||
| Flow, total | 2 | 18 | 0 | ||
| Nitrogen, total [as N] | 1 | 11 | 0 | ||
| Phosphorus, total [as P] | 1 | 11 | 0 | ||
| Oil & Grease | 1 | 9 | 0 | ||
| Oil and grease visual | 1 | 9 | 0 | ||
| Nitrite + Nitrate total [as N] | 0 | 4 | 0 | ||
| E. coli | 0 | 4 | 0 | ||
| Nitrogen, Kjeldahl Total | 0 | 4 | 0 | ||
| BOD, 5-day, percent removal | 0 | 2 | 0 | ||
| Solids, suspended percent removal | 0 | 2 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MTG589703.
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 MTG589703.
Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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 MTG589703 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.