NPDES IA0028932 · Clean Water Act
ALTON CITY OF STP, Alton, IA: NPDES IA0028932 discharge permit, effluent exceedances, inspections, penalties
ALTON CITY OF STP, Alton, Iowa: Individual permit IA0028932, held by CITY OF ALTON; Publicly owned treatment works; Effective; issued May 1, 2024, term to April 30, 2029, by STA.
- Flow, in conduit or thru treatment plant: 0 limits, 12 violations of any kind, 12 effluent exceedances, latest January 31, 2013, largest 266% over the limit.
- Chloride [as Cl]: 0 limits, 33 violations of any kind, 5 effluent exceedances, latest October 31, 2025, largest 29% over the limit.
- pH: 0 limits, 6 violations of any kind, 2 effluent exceedances, latest October 31, 2018.
- Nitrogen, ammonia total [as N]: 0 limits, 32 violations of any kind.
- Solids, total suspended: 0 limits, 2 violations of any kind.
- BOD, carbonaceous [5 day, 20 C]: 0 limits, 2 violations of any kind.
Iowa holds 734 Publicly owned treatment works coverages of this permit type in EPA’s file; 709 were issued before IA0028932.
Coverages issued nearest IA0028932
- 2023-05-01: TOLEDO CITY OF STP, Toledo: IA0033103, held by CITY OF TOLEDO
- 2023-09-01: BROOKLYN CITY OF STP, Brooklyn: IA0020958, held by CITY OF BROOKLYN
- 2023-11-01: LECLAIRE CITY OF STP, Le Claire: IA0022012, held by CITY OF LECLAIRE
- 2024-01-01: AUDUBON CITY OF STP, Audubon: IA0035203, held by CITY OF AUDUBON
- 2024-05-01: MOUNT AYR CITY OF STP, Mount Ayr: IA0023574, held by CITY OF MOUNT AYR
- 2024-06-01: NORTH ENGLISH CITY OF STP, North English: IA0034282, held by CITY OF NORTH ENGLISH
- 2024-07-01: MOUNT PLEASANT CITY OF STP (MAIN), Mount Pleasant: IA0047970, held by CITY OF MOUNT PLEASANT
- 2024-07-01: DOUGHERTY CITY OF STP, Dougherty: IA0048978, held by CITY OF DOUGHERTY
- 2024-08-01: BLAIRSTOWN CITY OF STP, Blairstown: IA0030660, held by CITY OF BLAIRSTOWN
- 2024-08-01: WALL LAKE CITY OF STP, Wall Lake: IA0033065, held by CITY OF WALL LAKE
ALTON CITY OF STP among its neighbors
1 discharge permits are in the Wolf Creek-Floyd River subwatershed (HUC 102300020307); IA0028932 is one. Its county: 80, 2 major; IA0028932 is minor permit.
Identity
| Facility | ALTON CITY OF STP |
|---|---|
| Permittee | CITY OF ALTON |
| NPDES ID | IA0028932 |
| Status | Effective |
| Type | Individual permit |
| Class | Minor |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | May 1, 2024 |
| Expires | April 30, 2029 |
| Agency | STA |
| Address | Alton, IA 51003 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Wolf Creek-Floyd River (HUC 102300020307) |
NPDES IA0028932: effluent limits and exceedances
ALTON CITY OF STP (NPDES IA0028932): 6 pollutants on file, 0 limited; 6 with a violation of any kind, 3 with an exceedance.
| Pollutant | Limits | Violations | Exceedances | Latest | Largest, as filed |
|---|---|---|---|---|---|
| Flow, in conduit or thru treatment plant | 0 | 12 | 12 | January 31, 2013 | 266% over the limit |
| Chloride [as Cl] | 0 | 33 | 5 | October 31, 2025 | 29% over the limit |
| pH | 0 | 6 | 2 | October 31, 2018 | |
| Nitrogen, ammonia total [as N] | 0 | 32 | 0 | ||
| Solids, total suspended | 0 | 2 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 0 | 2 | 0 |
NPDES IA0028932: inspections, violations and enforcement
NPDES IA0028932 (ALTON CITY OF STP): no single-event violation, inspection, formal enforcement action and informal enforcement action on file.
Watch NPDES IA0028932
NPDES IA0028932: one email when its EPA record changes — $99/month.
Permits near NPDES IA0028932
NPDES IA0028932: 6 pollutant rows, 0 dated events; ICIS-NPDES download, loaded September 15, 2026.