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Bowman City Of

Sewage treatment plant, Bowman, North Dakota. NPDES permit ND0021342, in force until Jun 30, 2031. Last 12 months: over a limit once (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due: About 32 days after each period: form A twice a year
Last report on file: June 2026
Oct 2024 – Sep 2025: 0 values over a limit, 9 required values missing, 1 of 2 reports late

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

Period ending	Parameter	Reported	Limit
June 2026	pH, maximum	9.25 SU	≤ 9 SU

Limits in force (9)

Parameter	Statistic	Limit	Months
BOD, 5-day, 20 deg. C	daily minimum	report only (mg/L)	all year
BOD, 5-day, 20 deg. C	monthly average	≤ 25 mg/L	all year
BOD, 5-day, 20 deg. C	daily maximum	report only (mg/L)	all year
pH	minimum	≥ 6 SU	all year
pH	maximum	≤ 9 SU	all year
Solids, total suspended	daily minimum	report only (mg/L)	all year
Solids, total suspended	monthly average	≤ 60 mg/L	all year
Solids, total suspended	daily maximum	report only (mg/L)	all year
Flow, total	total	report only (Mgal)	all year

How strict are these limits?

BOD, 5-day, 20 deg. C, monthly average 25 mg/L — stricter than 73% of 3,438 other minor POTWs nationwide; 2% have the same limit
Solids, total suspended, monthly average 60 mg/L — stricter than 18% of 6,786 other minor POTWs nationwide; 1% have the same limit

Cited limits by parameter: North Dakota'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/ND0021342 · MCP: https://passage-data.com/mcp