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The University of Iowa

Colleges And Universities, Iowa City, Iowa. NPDES permit IA0071919, in force until Jul 31, 2030. Last 12 months: over a limit 2 times (last July 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due: About 15 days after each period: outfall 001 form A monthly (6 values), outfall 002 form A monthly (4 values)
Last report on file: September 2026
Oct 2024 – Sep 2025: 0 values over a limit, 0 required values missing, 0 of 24 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period ending	Parameter	Reported	Limit	Over by
June 2026	Chlorine, total residual, 30-day average	.02	≤ .015 mg/L	33%
July 2026	Chlorine, total residual, 30-day average	.02	≤ .015 mg/L	33%

Limits in force (10)

Parameter	Statistic	Limit	Months	Outfall
pH	daily minimum	≥ 6.4 SU	all year	001
pH	daily maximum	≤ 9 SU	all year	001
Chlorine, total residual	30-day average	≤ .015 mg/L	all year	001
Chlorine, total residual	daily maximum	≤ .02 mg/L	all year	001
Chlorine, total residual	30-day average	≤ .173 lb/d	all year	001
Chlorine, total residual	daily maximum	≤ .229 lb/d	all year	001
Solids, total suspended	30-day average	≤ 30 mg/L	all year	002
Solids, total suspended	daily maximum	≤ 45 mg/L	all year	002
Solids, total suspended	30-day average	≤ 12 lb/d	all year	002
Solids, total suspended	daily maximum	≤ 18 lb/d	all year	002

New limits from Jul 1, 2030

Parameter	New limit	New or tighter	Median, last 12 months	× new limit
Iron, total [as Fe], 30-day average	3.44 mg/L	new	—	—
Iron, total [as Fe], 30-day average	21 lb/d	new	—	—
Iron, total [as Fe], daily maximum	3.44 mg/L	new	—	—
Iron, total [as Fe], daily maximum	21 lb/d	new	—	—

How strict are these limits?

Chlorine, total residual, daily maximum .02 mg/L — stricter than 71% of 107 other minor industrial and other permits in Iowa; 3% have the same limit
Chlorine, total residual, 30-day average .015 mg/L — stricter than 66% of 106 other minor industrial and other permits in Iowa
pH, daily minimum at least 6.4 SU — stricter than 56% of 423 other minor industrial and other permits in Iowa; 4% have the same limit

Cited limits by parameter: Iowa's rules and the federal ones.

Same industry: the 30 Educational Services permits in Iowa.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IA0071919 · MCP: https://passage-data.com/mcp