Clean Water Act discharge permit · NPDES IA0031429

HUBBARD CITY OF STP, Hubbard, IA: NPDES IA0031429 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
8Pollutants under a numeric limit
2Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

HUBBARD CITY OF STP, held by CITY OF HUBBARD, holds NPDES permit IA0031429. EPA’s file records it issued December 1, 2014 and expiring November 30, 2019.

HUBBARD CITY OF STP, Hubbard, Iowa: Individual permit IA0031429, held by CITY OF HUBBARD; Publicly owned treatment works; Effective; issued December 1, 2014, term to November 30, 2019, by STA; Sewage Treatment Facilities.

pH: 5 limits, 65 violations of any kind, 3 effluent exceedances, latest May 31, 2025.
BOD, carbonaceous [5 day, 20 C]: 2 limits, 66 violations of any kind, 2 effluent exceedances, latest December 31, 2022, largest 65% over the limit.
Solids, total suspended: 5 limits, 64 violations of any kind, 0 effluent exceedances.
BOD, 5-day, 20 deg. C: 5 limits, 0 violations of any kind, 0 effluent exceedances.
Nitrogen, ammonia total [as N]: 5 limits, 0 violations of any kind, 0 effluent exceedances.
Chloride [as Cl]: 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; 97 were issued before IA0031429.

Coverages issued nearest IA0031429

September 1, 2014: ELDORA CITY OF STP, Eldora, IA0025933, held by CITY OF ELDORA
September 1, 2014: SEARSBORO CITY OF STP, Searsboro, IA0062553, held by CITY OF SEARSBORO
September 1, 2014: WEST CHESTER CITY OF STP, West Chester, IA0072460, held by CITY OF WEST CHESTER
October 1, 2014: GREENFIELD CITY OF STP, Greenfield, IA0021369, held by CITY OF GREENFIELD
October 1, 2014: ADEL CITY OF STP, Adel, IA0041921, held by CITY OF ADEL
January 1, 2015: RIVERTON, CITY OF-STP, Riverton, IA0077097, held by CITY OF RIVERTON
February 1, 2015: MERRILL CITY OF STP, Merrill, IA0024538, held by CITY OF MERRILL
February 1, 2015: MONROE CITY OF STP (WEST), Monroe, IA0041955, held by CITY OF MONROE
March 1, 2015: WEST UNION CITY OF STP, West Union, IA0035378, held by CITY OF WEST UNION
March 1, 2015: CHARLOTTE CITY OF STP, Charlotte, IA0062341, held by CITY OF CHARLOTTE

HUBBARD CITY OF STP among its neighbors

EPA’s permit file holds 1 discharge permits in the Headwaters Honey Creek subwatershed (HUC 070802070701), IA0031429 among them. Its county holds 10, 2 of them major permits; IA0031429 is a minor permit.

Identity

Facility as filed	HUBBARD CITY OF STP
Permittee as filed	CITY OF HUBBARD
NPDES ID	IA0031429
Permit status	Effective
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Publicly owned treatment works
Program	Publicly owned treatment works
Issued	December 1, 2014
Expiration date	November 30, 2019
Issuing agency	STA
Address	Hubbard, IA 50122
Subwatershed	Headwaters Honey Creek (HUC 070802070701)
NAICS	221320 – Sewage Treatment Facilities
SIC	4952 – Sewerage Systems

Effluent limits and exceedances

8Pollutants on file
8Under a numeric limit
3With a violation of any kind
2With 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	5	65	3	May 31, 2025
BOD, carbonaceous [5 day, 20 C]	2	66	2	December 31, 2022	65% over the limit
Solids, total suspended	5	64	0
BOD, 5-day, 20 deg. C	5	0	0
Nitrogen, ammonia total [as N]	5	0	0
Chloride [as Cl]	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 IA0031429.

Inspections

EPA’s inspection file holds no inspection for NPDES IA0031429.

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 IA0031429.

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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

This public-records page covers Clean Water Act NPDES permit IA0031429 for HUBBARD CITY OF STP in Hubbard, IA, held by CITY OF HUBBARD and listed as Effective and a Minor discharger. The facts list 8 pollutants on file, 8 under a numeric limit, 3 with a violation of any kind, and 2 with an effluent exceedance.