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City of New Liberty

Sewage treatment plant, New Liberty, Iowa. NPDES permit IA0075221, in force until Jan 31, 2028. Last 12 months: over a limit 2 times (last November 2025). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (6 values)
Renewal application due
Aug 4, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
2 values over a limit, 0 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
November 2025BOD, carbonaceous [5 day, 20 C], 30-day average53≤ 25 mg/L112%
November 2025BOD, carbonaceous [5 day, 20 C], 7-day average65≤ 40 mg/L63%

Limits in force (6)

ParameterStatisticLimitMonths
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspended30-day average≤ 80 mg/Lall year
Solids, total suspended7-day average≤ 120 mg/Lall year
BOD, carbonaceous [5 day, 20 C]30-day average≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 40 mg/Lall year

New limits from Jan 1, 2028

ParameterNew limitNew or tighterMedian, last 12 months× new limit
E. coli, geometric mean702 #/100mL (Mar–Nov)new——

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IA0075221 · MCP: https://passage-data.com/mcp