Clean Water Act discharge permit · NPDES MNG585042
TWIN LAKES WWTP, Twin Lakes, MN: NPDES MNG585042 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 12Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
TWIN LAKES WWTP, held by Twin Lakes city of, holds NPDES permit MNG585042. EPA’s file records it issued January 1, 2024 and expiring November 30, 2028.
TWIN LAKES WWTP, Twin Lakes, Minnesota: Coverage under a general permit MNG585042, held by Twin Lakes city of; Publicly owned treatment works; Effective; issued January 1, 2024, term to November 30, 2028, by STA.
- Flow, in conduit or thru treatment plant: 9 limits, 12 violations of any kind, 0 effluent exceedances.
- Solids, total suspended: 5 limits, 9 violations of any kind, 0 effluent exceedances.
- BOD, carbonaceous [5 day, 20 C]: 5 limits, 9 violations of any kind, 0 effluent exceedances.
- pH: 3 limits, 5 violations of any kind, 0 effluent exceedances.
- Phosphorus, total [as P]: 3 limits, 5 violations of any kind, 0 effluent exceedances.
- Nitrogen, total [as N]: 2 limits, 4 violations of any kind, 0 effluent exceedances.
- Nitrogen, Kjeldahl, total [as N]: 2 limits, 4 violations of any kind, 0 effluent exceedances.
- Nitrite + Nitrate total [as N]: 2 limits, 4 violations of any kind, 0 effluent exceedances.
- Precipitation, total defined period/in: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Oxygen, dissolved [DO]: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Coliform, fecal MPN + membrane ftl 44.5 C: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Sulfate, total [as SO4]: 1 limit, 0 violations of any kind, 0 effluent exceedances.
Minnesota holds 240 Publicly owned treatment works coverages of this permit type in EPA’s file; 221 were issued before MNG585042.
Coverages issued nearest MNG585042
- January 1, 2023: WENDELL WWTP, Wendell, MNG585153, held by Wendell city of
- February 1, 2023: COMMUNITY OF ROSELAND WWTP, Blomkest, MNG585393, held by Roseland Township
- June 1, 2023: SEARLES WWTP, Searles, MNG585080, held by Cottonwood Township
- January 1, 2024: MCINTOSH WWTP, Mcintosh, MNG585031, held by McIntosh city of
- January 1, 2024: OKLEE WWTP, Oklee, MNG585038, held by Oklee city of
- January 1, 2024: SHAFER WWTP, Shafer, MNG585047, held by Shafer city of
- January 1, 2024: WILLOW RIVER WWTP, Willow River, MNG585054, held by Willow River city of
- January 1, 2024: MAPLETON WWTP, Mapleton, MNG585089, held by Mapleton city of
- January 1, 2024: LUCAN WWTP, Lucan, MNG585112, held by Lucan city of
- January 1, 2024: ALDEN WWTP, Alden, MNG585118, held by Alden city of
TWIN LAKES WWTP among its neighbors
EPA’s permit file holds 3 discharge permits in the County Ditch No 55 subwatershed (HUC 070802020106), MNG585042 among them. Its county holds 33, 1 of them major permits; MNG585042 is a minor permit.
Other permits in the County Ditch No 55 subwatershed (HUC 070802020106)
- MNDOT ALBERT LEA TRAVEL INFORMATION CTR, Glenville: MN0044458, minor permit, permit term to July 31, 2027
- TWIN LAKES, Twin Lakes: MNG580042, minor permit, discharging to GOOSE CR, permit term to February 28, 2010
Identity
| Facility as filed | TWIN LAKES WWTP |
|---|---|
| Permittee as filed | Twin Lakes city of |
| NPDES ID | MNG585042 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | January 1, 2024 |
| Expiration date | November 30, 2028 |
| Issuing agency | STA |
| Address | Twin Lakes, MN 56089 |
| Subwatershed | County Ditch No 55 (HUC 070802020106) |
Effluent limits and exceedances
- 12Pollutants on file
- 12Under 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 | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Flow, in conduit or thru treatment plant | 9 | 12 | 0 | ||
| Solids, total suspended | 5 | 9 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 5 | 9 | 0 | ||
| pH | 3 | 5 | 0 | ||
| Phosphorus, total [as P] | 3 | 5 | 0 | ||
| Nitrogen, total [as N] | 2 | 4 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 2 | 4 | 0 | ||
| Nitrite + Nitrate total [as N] | 2 | 4 | 0 | ||
| Precipitation, total defined period/in | 1 | 2 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 2 | 0 | ||
| Coliform, fecal MPN + membrane ftl 44.5 C | 1 | 1 | 0 | ||
| Sulfate, total [as SO4] | 1 | 0 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MNG585042.
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MNG585042.
Inspections
EPA’s inspection file holds no inspection for NPDES MNG585042.
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
EPA’s informal enforcement file holds no action for NPDES MNG585042.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.