Clean Water Act discharge permit · NPDES IA0065811

OTO CITY OF STP, Oto, IA: NPDES IA0065811 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
6Pollutants under a numeric limit
2Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

OTO CITY OF STP, held by CITY OF OTO, holds NPDES permit IA0065811. EPA’s file records it issued July 1, 2017 and expiring June 30, 2022.

OTO CITY OF STP, Oto, Iowa: Individual permit IA0065811, held by CITY OF OTO; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued July 1, 2017, term to June 30, 2022, by STA.

BOD, carbonaceous [5 day, 20 C]: 5 limits, 8 violations of any kind, 5 effluent exceedances, latest May 31, 2022, largest 64% over the limit.
Solids, total suspended: 5 limits, 4 violations of any kind, 1 effluent exceedance, latest June 30, 2021, largest 43% over the limit.
pH: 2 limits, 2 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; 236 were issued before IA0065811.

Coverages issued nearest IA0065811

July 1, 2017: NEW ALBIN CITY OF STP, New Albin, IA0026611, held by CITY OF NEW ALBIN
July 1, 2017: ODEBOLT CITY OF STP, Odebolt, IA0032506, held by CITY OF ODEBOLT
July 1, 2017: POMEROY CITY OF STP, Pomeroy, IA0032824, held by CITY OF POMEROY
July 1, 2017: PRINCETON CITY OF STP, Princeton, IA0033227, held by CITY OF PRINCETON
July 1, 2017: VAN METER CITY OF STP, Van Meter, IA0036021, held by CITY OF VAN METER
August 1, 2017: DELOIT CITY OF STP, Deloit, IA0020826, held by CITY OF DELOIT
August 1, 2017: LONG GROVE CITY OF STP, Long Grove, IA0022292, held by CITY OF LONG GROVE
August 1, 2017: LAMONT CITY OF STP, Lamont, IA0025348, held by CITY OF LAMONT
August 1, 2017: PRIMGHAR CITY OF STP, Primghar, IA0033031, held by City of Primghar
August 1, 2017: ROCKWELL, CITY OF STP, Rockwell, IA0033481, held by CITY OF ROCKWELL

OTO CITY OF STP among its neighbors

EPA’s permit file holds 5 discharge permits in the Fern Creek-Little Sioux River subwatershed (HUC 102300031505), IA0065811 among them. Its county holds 39, 5 of them major permits; IA0065811 is a minor permit.

Other permits in the Fern Creek-Little Sioux River subwatershed (HUC 102300031505)

B BALDWIN FEEDLOT, Anthon: IA0080187, minor permit, permit term to January 31, 2022
DAN BURKHART SITE #2, Oto: IA0084182, minor permit, permit term to October 31, 2023
FLECK FARMS FEEDLOT, Anthon: IA0052174, minor permit, permit term to February 28, 2022
MARK BALDWIN FEEDLOT, Anthon: IA0080098, minor permit, permit term to November 30, 2021

Identity

Facility as filed	OTO CITY OF STP
Permittee as filed	CITY OF OTO
NPDES ID	IA0065811
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	July 1, 2017
Expiration date	June 30, 2022
Issuing agency	STA
Address	Oto, IA 51044
Receiving water impaired	303(D) Listed
Subwatershed	Fern Creek-Little Sioux River (HUC 102300031505)

Effluent limits and exceedances

6Pollutants on file
6Under 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
BOD, carbonaceous [5 day, 20 C]	5	8	5	May 31, 2022	64% over the limit
Solids, total suspended	5	4	1	June 30, 2021	43% over the limit
pH	2	2	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 IA0065811.

Inspections

EPA’s inspection file holds no inspection for NPDES IA0065811.

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 IA0065811.

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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

This public-records page covers the Clean Water Act NPDES permit IA0065811 for the OTO CITY OF STP in Oto, IA, held by CITY OF OTO, with a permit status of administratively continued and a discharger class of Minor. The listed figures are 6 pollutants on file, 3 under a numeric limit, 2 with a violation of any kind, and 2 with an effluent exceedance, within the subwatershed Fern Creek-Little Sioux River (HUC 102300031505).