Clean Water Act discharge permit · NPDES IA0059765
IOWA GREAT LAKES SANITARY DISTRICT STP, Milford, IA: NPDES IA0059765 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 19Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
IOWA GREAT LAKES SANITARY DISTRICT STP, held by IOWA GREAT LAKES SANITARY DISTRICT, holds NPDES permit IA0059765. EPA’s file records it issued September 1, 2021 and expiring August 31, 2026. 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 | IOWA GREAT LAKES SANITARY DISTRICT STP |
|---|---|
| Permittee as filed | IOWA GREAT LAKES SANITARY DISTRICT |
| NPDES ID | IA0059765 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | September 1, 2021 |
| Expiration date | August 31, 2026 |
| Issuing agency | STA |
| Address | Milford, IA 51351 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Milford Creek (HUC 102300030204) |
| Program components on file | Biosolids, POTW |
| NAICS | 221320 – Sewage Treatment Facilities |
| SIC | 4952 – Sewerage Systems |
| Other EPA IDs (FRS) | RCRA handler IAR000519629; ICIS-AIR source IA0000001905900111 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 19Pollutants on file
- 19Under a numeric limit
- 9With 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 |
|---|---|---|---|---|---|
| Copper, total [as Cu] | 4 | 15 | 11 | January 31, 2026 | 184% over the limit |
| Nitrogen, ammonia total [as N] | 48 | 7 | 3 | July 31, 2017 | 76% over the limit |
| Cadmium, total [as Cd] | 4 | 5 | 1 | February 28, 2026 | 14% over the limit |
| pH | 5 | 3 | 1 | March 31, 2026 | |
| Toxicity [acute], Ceriodaphnia dubia | 1 | 3 | 1 | September 30, 2025 | 100% over the limit |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 1 | 3 | 1 | September 30, 2025 | 100% over the limit |
| Solids, total suspended | 9 | 4 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 4 | 4 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 1 | 0 | ||
| Nitrogen, total [as N] | 10 | 0 | 0 | ||
| Phosphorus, total [as P] | 6 | 0 | 0 | ||
| BOD, 5-day, 20 deg. C | 5 | 0 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 5 | 0 | 0 | ||
| Chromium, hexavalent [as Cr] | 5 | 0 | 0 | ||
| Di[2-ethylhexyl] phthalate [DEHP] | 5 | 0 | 0 | ||
| Arsenic, total [as As] | 4 | 0 | 0 | ||
| Thallium, total [as Tl] | 4 | 0 | 0 | ||
| Selenium, total [as Se] | 4 | 0 | 0 | ||
| Phenols | 4 | 0 | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES IA0059765.
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.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.