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City of Palmer

Sewage treatment plant, Palmer, Iowa. NPDES permit IA0079308, in force until Nov 30, 2029. Last 12 months: over a limit once (last April 2026), 5 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 15 days after each period: form A monthly (6 values)
Last report on file: September 2026
Oct 2024 – Sep 2025: 0 values over a limit, 13 required values missing, 5 of 12 reports late

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

Period ending	Parameter	Reported	Limit	Over by
April 2026	BOD, carbonaceous [5 day, 20 C], 30-day average	29	≤ 25 mg/L	16%

Limits in force (6)

Parameter	Statistic	Limit	Months
pH	daily minimum	≥ 6.5 SU	all year
pH	daily maximum	≤ 9 SU	all year
Solids, total suspended	30-day average	≤ 80 mg/L	all year
Solids, total suspended	7-day average	≤ 120 mg/L	all year
BOD, carbonaceous [5 day, 20 C]	30-day average	≤ 25 mg/L	all year
BOD, carbonaceous [5 day, 20 C]	7-day average	≤ 40 mg/L	all year

New limits from Nov 1, 2029

Parameter	New limit	New or tighter	Median, last 12 months	× new limit
Chloride [as Cl], 30-day average	411 mg/L	new	—	—
Chloride [as Cl], 30-day average	871 lb/d	new	—	—
Chloride [as Cl], daily maximum	633 mg/L	new	—	—
Chloride [as Cl], daily maximum	1340 lb/d	new	—	—

How strict are these limits?

pH, daily minimum at least 6.5 SU — stricter than 56% of 699 other minor POTWs in Iowa; 44% have the same limit

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/IA0079308 · MCP: https://passage-data.com/mcp