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Town of Kevin

Sewage treatment plant, Kevin, Montana. NPDES permit MT0030244 expired Apr 30, 2023; its limits still apply. Last 12 months: over a limit 11 times (last April 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due: About 28 days after each period: form A monthly (12 values), form Q quarterly (2 values)
Last report on file: September 2026
Oct 2024 – Sep 2025: 1 value over a limit, 0 required values missing, 0 of 16 reports late

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

Period ending	Parameter	Reported	Limit	Over by
October 2025	BOD, 5-day, 20 deg. C, monthly average	87 mg/L	≤ 30 mg/L	190%
October 2025	BOD, 5-day, 20 deg. C, maximum weekly average	87 mg/L	≤ 45 mg/L	93%
October 2025	BOD, 5-day, percent removal, minimum	48.82 %	≥ 85 %	241%
October 2025	Solids, suspended percent removal, minimum	56.7 %	≥ 85 %	189%
October 2025	Solids, total suspended, monthly average	71 mg/L	≤ 30 mg/L	137%
October 2025	Solids, total suspended, maximum weekly average	71 mg/L	≤ 45 mg/L	58%
April 2026	BOD, 5-day, 20 deg. C, monthly average	40 mg/L	≤ 30 mg/L	33%
April 2026	BOD, 5-day, percent removal, minimum	60 %	≥ 85 %	167%
April 2026	Solids, suspended percent removal, minimum	38.46 %	≥ 85 %	310%
April 2026	Solids, total suspended, monthly average	58 mg/L	≤ 30 mg/L	93%
April 2026	Solids, total suspended, maximum weekly average	58 mg/L	≤ 45 mg/L	29%

Limits in force (17)

Parameter	Statistic	Limit	Months
Flow rate	monthly average	report only (MGD)	all year
Flow rate	daily maximum	report only (MGD)	all year
BOD, 5-day, 20 deg. C	monthly average	≤ 30 mg/L	all year
BOD, 5-day, 20 deg. C	maximum weekly average	≤ 45 mg/L	all year
BOD, 5-day, 20 deg. C	monthly average	≤ 7.5 lb/d	all year
BOD, 5-day, 20 deg. C	maximum weekly average	≤ 11.3 lb/d	all year
BOD, 5-day, 20 deg. C	single sample	report only (mg/L)	all year
pH	minimum	≥ 6 SU	all year
pH	maximum	≤ 9 SU	all year
Solids, total suspended	monthly average	≤ 30 mg/L	all year
Solids, total suspended	maximum weekly average	≤ 45 mg/L	all year
Solids, total suspended	monthly average	≤ 7.5 lb/d	all year
Solids, total suspended	maximum weekly average	≤ 11.3 lb/d	all year
Solids, total suspended	single sample	report only (mg/L)	all year
Duration	total	report only (d/mo)	all year
BOD, 5-day, percent removal	minimum	≥ 85 %	all year
Solids, suspended percent removal	minimum	≥ 85 %	all year

How strict are these limits?

Solids, total suspended, maximum weekly average 45 mg/L — stricter than 40% of 22 other minor POTWs in Montana; 59% have the same limit
Solids, total suspended, monthly average 30 mg/L — stricter than 39% of 51 other minor POTWs in Montana; 61% have the same limit
Solids, suspended percent removal, minimum at least 85 % — stricter than 35% of 37 other minor POTWs in Montana; 65% have the same limit

Cited limits by parameter: Montana'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/MT0030244 · MCP: https://passage-data.com/mcp