Clean Water Act discharge permit · NPDES IA0077241
MASONVILLE, CITY OF-STP, Masonville, IA: NPDES IA0077241 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 6Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
MASONVILLE, CITY OF-STP, held by CITY OF MASONVILLE, holds NPDES permit IA0077241. EPA’s file records it issued March 1, 2019 and expiring February 29, 2024.
MASONVILLE, CITY OF-STP, Masonville, Iowa: Individual permit IA0077241, held by CITY OF MASONVILLE; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued March 1, 2019, term to February 29, 2024, by STA; Sewage Treatment Facilities.
- Flow, in conduit or thru treatment plant: 0 limits, 88 violations of any kind, 86 effluent exceedances, latest March 31, 2008, largest 953% over the limit.
- BOD, carbonaceous [5 day, 20 C]: 7 limits, 76 violations of any kind, 8 effluent exceedances, latest June 30, 2026, largest 25% over the limit.
- pH: 2 limits, 69 violations of any kind, 6 effluent exceedances, latest October 31, 2022.
- Solids, total suspended: 7 limits, 70 violations of any kind, 0 effluent exceedances.
- Nitrogen, ammonia total [as N]: 5 limits, 0 violations of any kind, 0 effluent exceedances.
- E. coli: 3 limits, 0 violations of any kind, 0 effluent exceedances.
- Depth of pond or reservoir in feet: 3 limits, 0 violations of any kind, 0 effluent exceedances.
Iowa holds 734 Publicly owned treatment works coverages of this permit type in EPA’s file; 422 were issued before IA0077241.
Coverages issued nearest IA0077241
- March 1, 2019: MEDIAPOLIS CITY OF STP, Mediapolis, IA0025917, held by CITY OF MEDIAPOLIS
- March 1, 2019: SLOAN CITY OF STP, Sloan, IA0032361, held by CITY OF SLOAN
- March 1, 2019: GARNER CITY OF STP, Garner, IA0036153, held by CITY OF GARNER
- March 1, 2019: STATE CENTER CITY OF STP, State Center, IA0041807, held by CITY OF STATE CENTER
- March 1, 2019: QUASQUETON CITY OF STP, Quasqueton, IA0057011, held by CITY OF QUASQUETON
- April 1, 2019: CARLISLE CITY OF STP, Carlisle, IA0024554, held by CITY OF CARLISLE
- April 1, 2019: KEYSTONE CITY OF STP, Keystone, IA0025984, held by CITY OF KEYSTONE
- April 1, 2019: HOLY CROSS CITY OF STP, Holy Cross, IA0025992, held by CITY OF HOLY CROSS
- April 1, 2019: SABULA CITY OF STP, Sabula, IA0032867, held by CITY OF SABULA
- April 1, 2019: BEACON CITY OF STP, Beacon, IA0035424, held by CITY OF BEACON
MASONVILLE, CITY OF-STP among its neighbors
EPA’s permit file holds 1 discharge permits in the Coffins Creek subwatershed (HUC 070600060207), IA0077241 among them. Its county holds 19, 0 of them major permits; IA0077241 is a minor permit.
Identity
| Facility as filed | MASONVILLE, CITY OF-STP |
|---|---|
| Permittee as filed | CITY OF MASONVILLE |
| NPDES ID | IA0077241 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | March 1, 2019 |
| Expiration date | February 29, 2024 |
| Issuing agency | STA |
| Address | Masonville, IA 50654 |
| Subwatershed | Coffins Creek (HUC 070600060207) |
| NAICS | 221320 – Sewage Treatment Facilities |
| SIC | 4952 – Sewerage Systems |
Effluent limits and exceedances
- 7Pollutants on file
- 6Under a numeric limit
- 4With 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 |
|---|---|---|---|---|---|
| Flow, in conduit or thru treatment plant | 0 | 88 | 86 | March 31, 2008 | 953% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 7 | 76 | 8 | June 30, 2026 | 25% over the limit |
| pH | 2 | 69 | 6 | October 31, 2022 | |
| Solids, total suspended | 7 | 70 | 0 | ||
| Nitrogen, ammonia total [as N] | 5 | 0 | 0 | ||
| E. coli | 3 | 0 | 0 | ||
| Depth of pond or reservoir in feet | 3 | 0 | 0 |
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES IA0077241.
Inspections
EPA’s inspection file holds no inspection for NPDES IA0077241.
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 IA0077241.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.