Clean Water Act discharge permit · NPDES IA0079235

IIHR HYDRAULICS WAVE BASIN FACILITY, Coralville, IA: NPDES IA0079235 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
3Pollutants under a numeric limit
0Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

IIHR HYDRAULICS WAVE BASIN FACILITY, held by THE UNIVERSITY OF IOWA, holds NPDES permit IA0079235. EPA’s file records it issued September 1, 2020 and expiring August 31, 2025.

IIHR HYDRAULICS WAVE BASIN FACILITY, Coralville, Iowa: Individual permit IA0079235, held by THE UNIVERSITY OF IOWA; Administratively continued (past its expiration date and still in force until reissued); issued September 1, 2020, term to August 31, 2025, by STA; Colleges, Universities, and Professional Schools.

Chlorine, total residual: 12 limits, 252 violations of any kind, 0 effluent exceedances.
pH: 6 limits, 154 violations of any kind, 0 effluent exceedances.
Color: 15 limits, 0 violations of any kind, 0 effluent exceedances.

Other permits held by THE UNIVERSITY OF IOWA

UNIVERSITY OF IOWA POWER PLANT, Iowa City: IA0003077, issued June 1, 2017
UNIVERSITY OF IOWA COOLING TOWER BLOWDOWN, Iowa City: IA0069159, issued April 1, 2017
UNIVERSITY OF IOWA WATER TREATMENT PLANT, Iowa City: IA0071919, issued July 1, 2018

IIHR HYDRAULICS WAVE BASIN FACILITY among its neighbors

EPA’s permit file holds 5 discharge permits in the Lower Clear Creek subwatershed (HUC 070802090103), IA0079235 among them. Its county holds 47, 4 of them major permits; IA0079235 is a minor permit.

Other permits in the Lower Clear Creek subwatershed (HUC 070802090103)

CITY OF CORALVILLE, Coralville: IAL020788, minor permit, permit term to December 31, 2025
CORALVILLE, CITY OF MS4, Coralville: IA0078646, minor permit, permit term to August 31, 2019
CORALVILLE, CITY OF WTP, Coralville: IA0079405, minor permit, permit term to April 30, 2018
TIFFIN CITY OF STP, Tiffin: IA0036617, minor permit, permit term to October 31, 2025

Identity

Facility as filed	IIHR HYDRAULICS WAVE BASIN FACILITY
Permittee as filed	THE UNIVERSITY OF IOWA
NPDES ID	IA0079235
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	September 1, 2020
Expiration date	August 31, 2025
Issuing agency	STA
Address	Coralville, IA 52241
Subwatershed	Lower Clear Creek (HUC 070802090103)
NAICS	611310 – Colleges, Universities, and Professional Schools
SIC	8221 – Colleges And Universities

Effluent limits and exceedances

3Pollutants on file
3Under a numeric limit
2With a violation of any kind
0With 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
Chlorine, total residual	12	252
pH	6	154
Color	15	0

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES IA0079235.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES IA0079235.

Inspections

EPA’s inspection file holds no inspection for NPDES IA0079235.

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 IA0079235.

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

This public-records page covers NPDES permit IA0079235 for the IIHR Hydraulics Wave Basin Facility in Coralville, IA, held by The University of Iowa, a Minor discharger under an individual permit with administratively continued status. The figures listed are 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance, with the permit recorded as issued September 1, 2020 and expiring August 31, 2025.