Clean Water Act discharge permit · NPDES MNG585165
AVOCA & IONA WWTP, Iona, MN: NPDES MNG585165 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 11Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
AVOCA & IONA WWTP, held by Iona city of, holds NPDES permit MNG585165. EPA’s file records it issued January 1, 2020 and expiring November 30, 2023.
AVOCA & IONA WWTP, Iona, Minnesota: Coverage under a general permit MNG585165, held by Iona city of; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued January 1, 2020, term to November 30, 2023, by STA.
- pH: 3 limits, 9 violations of any kind, 9 effluent exceedances, latest October 31, 2024.
- Solids, total suspended: 5 limits, 8 violations of any kind, 8 effluent exceedances, latest May 31, 2026, largest 38% over the limit.
- BOD, carbonaceous [5 day, 20 C]: 5 limits, 3 violations of any kind, 3 effluent exceedances, latest May 31, 2026, largest 36% over the limit.
- Nitrogen, total [as N]: 2 limits, 2 violations of any kind, 0 effluent exceedances.
- Nitrogen, Kjeldahl, total [as N]: 2 limits, 1 violation of any kind, 0 effluent exceedances.
- Nitrite + Nitrate total [as N]: 2 limits, 1 violation of any kind, 0 effluent exceedances.
- Flow, in conduit or thru treatment plant: 9 limits, 0 violations of any kind, 0 effluent exceedances.
- Phosphorus, total [as P]: 4 limits, 0 violations of any kind, 0 effluent exceedances.
- Precipitation, total defined period/in: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Oxygen, dissolved [DO]: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Coliform, fecal MPN + membrane ftl 44.5 C: 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; 13 were issued before MNG585165.
Coverages issued nearest MNG585165
- January 1, 2020: NEWFOLDEN WWTP, Newfolden, MNG585145, held by Newfolden city of
- January 1, 2020: AUDUBON WWTP, Audubon, MNG585148, held by Audubon city of
- January 1, 2020: DARWIN WWTP, Darwin, MNG585150, held by Darwin city of
- January 1, 2020: LAKE PARK WWTP, Lake Park, MNG585157, held by Lake Park city of
- January 1, 2020: RED LAKE FALLS WWTP, Red Lake Falls, MNG585161, held by Red Lake Falls city of
- January 1, 2020: ALVARADO WWTP, Alvarado, MNG585171, held by Alvarado city of
- January 1, 2020: GARY WWTP, Gary, MNG585175, held by Gary city of
- January 1, 2020: HENDRUM WWTP, Hendrum, MNG585176, held by Hendrum city of
- January 1, 2020: HITTERDAL WWTP, Hitterdal, MNG585178, held by Hitterdal city of
- January 1, 2020: HILL CITY WWTP, Hill City, MNG585182, held by Hill City city of
AVOCA & IONA WWTP among its neighbors
EPA’s permit file holds 2 discharge permits in the Lime Creek subwatershed (HUC 071000010303), MNG585165 among them. Its county holds 24, 0 of them major permits; MNG585165 is a minor permit.
Other permits in the Lime Creek subwatershed (HUC 071000010303)
- FULDA WWTP, Fulda: MNG585188, minor permit, permit term to November 30, 2023
Identity
| Facility as filed | AVOCA & IONA WWTP |
|---|---|
| Permittee as filed | Iona city of |
| NPDES ID | MNG585165 |
| 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 1, 2020 |
| Expiration date | November 30, 2023 |
| Issuing agency | STA |
| Address | Iona, MN 56141 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Lime Creek (HUC 071000010303) |
Effluent limits and exceedances
- 11Pollutants on file
- 11Under a numeric limit
- 6With a violation of any kind
- 3With 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 |
|---|---|---|---|---|---|
| pH | 3 | 9 | 9 | October 31, 2024 | |
| Solids, total suspended | 5 | 8 | 8 | May 31, 2026 | 38% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 5 | 3 | 3 | May 31, 2026 | 36% over the limit |
| Nitrogen, total [as N] | 2 | 2 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 2 | 1 | 0 | ||
| Nitrite + Nitrate total [as N] | 2 | 1 | 0 | ||
| Flow, in conduit or thru treatment plant | 9 | 0 | 0 | ||
| Phosphorus, total [as P] | 4 | 0 | 0 | ||
| Precipitation, total defined period/in | 1 | 0 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 0 | 0 | ||
| Coliform, fecal MPN + membrane ftl 44.5 C | 1 | 0 | 0 |
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MNG585165.
Inspections
EPA’s inspection file holds no inspection for NPDES MNG585165.
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 MNG585165.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.