Clean Water Act discharge permit · NPDES IA0072231

UNVERFERTH MFG. CO., INC., Shell Rock, IA: NPDES IA0072231 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
19Pollutants under a numeric limit
5Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

UNVERFERTH MFG. CO., INC. holds NPDES permit IA0072231. EPA’s file records it issued July 1, 2014 and expiring June 30, 2019.

UNVERFERTH MFG. CO., INC., Shell Rock, Iowa: Individual permit IA0072231; Administratively continued (past its expiration date and still in force until reissued); issued July 1, 2014, term to June 30, 2019, by STA; Farm Machinery and Equipment Manufacturing.

Cadmium, total [as Cd]: 4 limits, 205 violations of any kind, 9 effluent exceedances, latest December 31, 2015, largest 77% over the limit.
pH: 4 limits, 199 violations of any kind, 3 effluent exceedances, latest June 30, 2015.
Solids, total suspended: 6 limits, 295 violations of any kind, 1 effluent exceedance, latest June 30, 2015, largest 18% over the limit.
Oil & Grease: 4 limits, 197 violations of any kind, 1 effluent exceedance, latest September 30, 2015, largest 33% over the limit.
Chlorine, total residual: 4 limits, 197 violations of any kind, 1 effluent exceedance, latest January 31, 2022, largest 53% over the limit.
Cyanide, total [as CN]: 4 limits, 196 violations of any kind, 0 effluent exceedances.
Chromium, hexavalent [as Cr]: 4 limits, 196 violations of any kind, 0 effluent exceedances.
Chromium, total [as Cr]: 4 limits, 196 violations of any kind, 0 effluent exceedances.
Copper, total [as Cu]: 4 limits, 196 violations of any kind, 0 effluent exceedances.
Lead, total [as Pb]: 4 limits, 196 violations of any kind, 0 effluent exceedances.
Nickel, total [as Ni]: 4 limits, 196 violations of any kind, 0 effluent exceedances.
Silver, total [as Ag]: 4 limits, 196 violations of any kind, 0 effluent exceedances.
Zinc, total [as Zn]: 4 limits, 196 violations of any kind, 0 effluent exceedances.
Organics, total toxic [TTO]: 2 limits, 98 violations of any kind, 0 effluent exceedances.
BOD, carbonaceous [5 day, 20 C]: 2 limits, 98 violations of any kind, 0 effluent exceedances.
Nitrogen, total [as N]: 4 limits, 0 violations of any kind, 0 effluent exceedances.
Nitrogen, ammonia total [as N]: 3 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.

UNVERFERTH MFG. CO., INC. among its neighbors

EPA’s permit file holds 1 discharge permits in the McClure Creek subwatershed (HUC 070802040606), IA0072231 among them. Its county holds 10, 0 of them major permits; IA0072231 is a minor permit.

Identity

Facility as filed	UNVERFERTH MFG. CO., INC.
Permittee as filed	UNVERFERTH MFG. CO., INC.
NPDES ID	IA0072231
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	July 1, 2014
Expiration date	June 30, 2019
Issuing agency	STA
Address	Shell Rock, IA 50670
Subwatershed	McClure Creek (HUC 070802040606)
NAICS	333111 – Farm Machinery and Equipment Manufacturing
SIC	3523 – Farm Machinery And Equipment
Other EPA IDs (FRS)	RCRA handler IAD984566794; ICIS-AIR source IA0000001902300098

Effluent limits and exceedances

19Pollutants on file
19Under a numeric limit
15With a violation of any kind
5With 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
Cadmium, total [as Cd]	4	205	9	December 31, 2015	77% over the limit
pH	4	199	3	June 30, 2015
Solids, total suspended	6	295	1	June 30, 2015	18% over the limit
Oil & Grease	4	197	1	September 30, 2015	33% over the limit
Chlorine, total residual	4	197	1	January 31, 2022	53% over the limit
Cyanide, total [as CN]	4	196	0
Chromium, hexavalent [as Cr]	4	196	0
Chromium, total [as Cr]	4	196	0
Copper, total [as Cu]	4	196	0
Lead, total [as Pb]	4	196	0
Nickel, total [as Ni]	4	196	0
Silver, total [as Ag]	4	196	0
Zinc, total [as Zn]	4	196	0
Organics, total toxic [TTO]	2	98	0
BOD, carbonaceous [5 day, 20 C]	2	98	0
Nitrogen, total [as N]	4	0	0
Nitrogen, ammonia total [as N]	3	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 IA0072231.

Inspections

EPA’s inspection file holds no inspection for NPDES IA0072231.

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 IA0072231.

Watch this permit

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, IA0072231.

Start the watch

How we handle your data → Privacy

Nearby on the register

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

This public-records page covers NPDES permit IA0072231 held by UNVERFERTH MFG. CO., INC. in Shell Rock, IA, an administratively continued minor discharger permit issued July 1, 2014 and expiring June 30, 2019. The page lists 5 pollutants under a numeric limit and 5 pollutants with an effluent exceedance, with the subwatershed given as McClure Creek (HUC 070802040606).