UNIVERSITY OF NORTHERN IOWA — NPDES permit IA0063941: limits, due date and EPA's record

NPDES permit IA0063941 · Minor NON-POTW · administratively continued, expires 2026-04-30 · EPA's file as of 2026-09-19

This permit expired on 2026-04-30 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

Reporting

Reports are due about 15 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (111)

Outfall	Parameter	Statistic	Limit	Months
003	Temperature, water deg. fahrenheit	30DA AVG	<= 97.5 deg F	Aug
003	Temperature, water deg. fahrenheit	30DA AVG	<= 93 deg F	Mar
003	Temperature, water deg. fahrenheit	30DA AVG	<= 84.9 deg F	Nov
003	Temperature, water deg. fahrenheit	30DA AVG	<= 101.3 deg F	Oct
003	Temperature, water deg. fahrenheit	30DA AVG	<= 88.6 deg F	Apr
003	Temperature, water deg. fahrenheit	30DA AVG	<= 74.3 deg F	Dec
003	Temperature, water deg. fahrenheit	30DA AVG	<= 73.4 deg F	Jan
003	Temperature, water deg. fahrenheit	30DA AVG	<= 84.7 deg F	Feb
003	Temperature, water deg. fahrenheit	30DA AVG	<= 91.6 deg F	May
003	Temperature, water deg. fahrenheit	30DA AVG	<= 99.4 deg F	Sep
003	Temperature, water deg. fahrenheit	30DA AVG	<= 97.9 deg F	Jul
003	Temperature, water deg. fahrenheit	30DA AVG	<= 98.2 deg F	Jun
003	Temperature, water deg. fahrenheit	DAILY MX	<= 97.5 deg F	Aug
003	Temperature, water deg. fahrenheit	DAILY MX	<= 109.2 deg F	Mar
003	Temperature, water deg. fahrenheit	DAILY MX	<= 106.1 deg F	Nov
003	Temperature, water deg. fahrenheit	DAILY MX	<= 101.9 deg F	Oct
003	Temperature, water deg. fahrenheit	DAILY MX	<= 104.7 deg F	Apr
003	Temperature, water deg. fahrenheit	DAILY MX	<= 109.5 deg F	Dec
003	Temperature, water deg. fahrenheit	DAILY MX	<= 111.2 deg F	Jan
003	Temperature, water deg. fahrenheit	DAILY MX	<= 111.5 deg F	Feb
003	Temperature, water deg. fahrenheit	DAILY MX	<= 102.3 deg F	May
003	Temperature, water deg. fahrenheit	DAILY MX	<= 99.4 deg F	Sep
003	Temperature, water deg. fahrenheit	DAILY MX	<= 97.9 deg F	Jul
003	Temperature, water deg. fahrenheit	DAILY MX	<= 99.9 deg F	Jun
003	pH	DAILY MN	>= 6.5 SU	all year
003	pH	DAILY MX	<= 9 SU	all year
003	Solids, total suspended	30DA AVG	<= 30 mg/L	all year
003	Solids, total suspended	DAILY MX	<= 100 mg/L	all year
003	Solids, total suspended	30DA AVG	<= 5.3 lb/d	all year
003	Solids, total suspended	DAILY MX	<= 17.7 lb/d	all year
003	Oil & Grease	30DA AVG	<= 15 mg/L	all year
003	Oil & Grease	DAILY MX	<= 20 mg/L	all year
003	Oil & Grease	30DA AVG	<= 2.7 lb/d	all year
003	Oil & Grease	DAILY MX	<= 3.5 lb/d	all year
004	Temperature, water deg. fahrenheit	30DA AVG	<= 99.4 deg F	Sep
004	Temperature, water deg. fahrenheit	30DA AVG	<= 73.4 deg F	Jan
004	Temperature, water deg. fahrenheit	30DA AVG	<= 93 deg F	Mar
004	Temperature, water deg. fahrenheit	30DA AVG	<= 88.6 deg F	Apr
004	Temperature, water deg. fahrenheit	30DA AVG	<= 98.2 deg F	Jun
004	Temperature, water deg. fahrenheit	30DA AVG	<= 101.3 deg F	Oct
004	Temperature, water deg. fahrenheit	30DA AVG	<= 91.6 deg F	May
004	Temperature, water deg. fahrenheit	30DA AVG	<= 84.9 deg F	Nov
004	Temperature, water deg. fahrenheit	30DA AVG	<= 84.7 deg F	Feb
004	Temperature, water deg. fahrenheit	30DA AVG	<= 97.5 deg F	Aug
004	Temperature, water deg. fahrenheit	30DA AVG	<= 97.9 deg F	Jul
004	Temperature, water deg. fahrenheit	30DA AVG	<= 74.3 deg F	Dec
004	Temperature, water deg. fahrenheit	DAILY MX	<= 99.4 deg F	Sep
004	Temperature, water deg. fahrenheit	DAILY MX	<= 111.2 deg F	Jan
004	Temperature, water deg. fahrenheit	DAILY MX	<= 109.2 deg F	Mar
004	Temperature, water deg. fahrenheit	DAILY MX	<= 104.7 deg F	Apr
004	Temperature, water deg. fahrenheit	DAILY MX	<= 99.9 deg F	Jun
004	Temperature, water deg. fahrenheit	DAILY MX	<= 101.9 deg F	Oct
004	Temperature, water deg. fahrenheit	DAILY MX	<= 102.3 deg F	May
004	Temperature, water deg. fahrenheit	DAILY MX	<= 106.1 deg F	Nov
004	Temperature, water deg. fahrenheit	DAILY MX	<= 111.5 deg F	Feb
004	Temperature, water deg. fahrenheit	DAILY MX	<= 97.5 deg F	Aug
004	Temperature, water deg. fahrenheit	DAILY MX	<= 97.9 deg F	Jul
004	Temperature, water deg. fahrenheit	DAILY MX	<= 109.5 deg F	Dec
004	pH	DAILY MN	>= 6.5 SU	all year
004	pH	DAILY MX	<= 9 SU	all year
004	Oil & Grease	30DA AVG	<= 7.4 mg/L	all year
004	Oil & Grease	DAILY MX	<= 8.4 mg/L	all year
004	Oil & Grease	30DA AVG	<= .72 lb/d	all year
004	Oil & Grease	DAILY MX	<= .81 lb/d	all year
004	Chromium, hexavalent [as Cr]	30DA AVG	<= .012 mg/L	all year
004	Chromium, hexavalent [as Cr]	DAILY MX	<= .016 mg/L	all year
004	Chromium, hexavalent [as Cr]	30DA AVG	<= .004 lb/d	all year
004	Chromium, hexavalent [as Cr]	DAILY MX	<= .006 lb/d	all year
004	Zinc, total [as Zn]	30DA AVG	<= .217 mg/L	all year
004	Zinc, total [as Zn]	DAILY MX	<= .217 mg/L	all year
004	Zinc, total [as Zn]	30DA AVG	<= .081 lb/d	all year
004	Zinc, total [as Zn]	DAILY MX	<= .081 lb/d	all year
004	Chlorine, total residual	30DA AVG	<= .038 mg/L	all year
004	Chlorine, total residual	DAILY MX	<= .046 mg/L	all year
004	Chlorine, total residual	30DA AVG	<= .011 lb/d	all year
004	Chlorine, total residual	DAILY MX	<= .017 lb/d	all year
004	Chlorination duration	DAILY MX	<= 2 hr/d	all year
013	Temperature, water deg. fahrenheit	30DA AVG	<= 88.6 deg F	Apr
013	Temperature, water deg. fahrenheit	30DA AVG	<= 74.3 deg F	Dec
013	Temperature, water deg. fahrenheit	30DA AVG	<= 97.9 deg F	Jul
013	Temperature, water deg. fahrenheit	30DA AVG	<= 101.3 deg F	Oct
013	Temperature, water deg. fahrenheit	30DA AVG	<= 99.4 deg F	Sep
013	Temperature, water deg. fahrenheit	30DA AVG	<= 93 deg F	Mar
013	Temperature, water deg. fahrenheit	30DA AVG	<= 84.9 deg F	Nov
013	Temperature, water deg. fahrenheit	30DA AVG	<= 97.5 deg F	Aug
013	Temperature, water deg. fahrenheit	30DA AVG	<= 91.6 deg F	May
013	Temperature, water deg. fahrenheit	30DA AVG	<= 73.4 deg F	Jan
013	Temperature, water deg. fahrenheit	30DA AVG	<= 98.2 deg F	Jun
013	Temperature, water deg. fahrenheit	30DA AVG	<= 84.7 deg F	Feb
013	Temperature, water deg. fahrenheit	DAILY MX	<= 104.7 deg F	Apr
013	Temperature, water deg. fahrenheit	DAILY MX	<= 109.5 deg F	Dec
013	Temperature, water deg. fahrenheit	DAILY MX	<= 97.9 deg F	Jul
013	Temperature, water deg. fahrenheit	DAILY MX	<= 101.9 deg F	Oct
013	Temperature, water deg. fahrenheit	DAILY MX	<= 99.4 deg F	Sep
013	Temperature, water deg. fahrenheit	DAILY MX	<= 109.2 deg F	Mar
013	Temperature, water deg. fahrenheit	DAILY MX	<= 106.1 deg F	Nov
013	Temperature, water deg. fahrenheit	DAILY MX	<= 97.5 deg F	Aug
013	Temperature, water deg. fahrenheit	DAILY MX	<= 102.3 deg F	May
013	Temperature, water deg. fahrenheit	DAILY MX	<= 111.2 deg F	Jan
013	Temperature, water deg. fahrenheit	DAILY MX	<= 99.9 deg F	Jun
013	Temperature, water deg. fahrenheit	DAILY MX	<= 111.5 deg F	Feb
013	pH	DAILY MN	>= 6.5 SU	all year
013	pH	DAILY MX	<= 9 SU	all year
013	Solids, total suspended	30DA AVG	<= 30 mg/L	all year
013	Solids, total suspended	DAILY MX	<= 100 mg/L	all year
013	Solids, total suspended	30DA AVG	<= 5.8 lb/d	all year
013	Solids, total suspended	DAILY MX	<= 19.2 lb/d	all year
013	Oil & Grease	30DA AVG	<= 15 mg/L	all year
013	Oil & Grease	DAILY MX	<= 20 mg/L	all year
013	Oil & Grease	30DA AVG	<= 2.9 lb/d	all year
013	Oil & Grease	DAILY MX	<= 3.8 lb/d	all year