Passage Data · Check a report · Use it from your AI

Wolf Creek County Water Sewer Dist

Sewage treatment plant, Wolf Creek, Montana. NPDES permit MT0031712 expired Oct 31, 2016; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (26 values), form Q quarterly (8 values), form UP quarterly (3 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 6 of 20 reports late

Limits in force (39)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year
Temperature, water deg. fahrenheitweekly maximumreport only (deg F)all year
Flow ratemonthly averagereport only (MGD)all year
Flow ratedaily maximumreport only (MGD)all year
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 4 lb/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 6 lb/dall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cweekly averagereport only (mg/L)all year
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 4 lb/dall year
Solids, total suspendedweekly average≤ 6 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedweekly averagereport only (mg/L)all year
Oil and grease, hexane extr methodmaximum≤ 10 mg/Lall year
Nitrogen, total [as N]monthly average≤ 8 mg/LJun–Sep
Nitrogen, total [as N]monthly averagereport only (lb/d)Jun–Sep
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)Jun–Sep
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)Jun–Sep
Phosphorus, total [as P]monthly average≤ .79 mg/LJun–Sep
Phosphorus, total [as P]monthly averagereport only (lb/d)Jun–Sep
Hardness, total [as CaCO3]quarterly averagereport only (mg/L)all year
Lead, total recoverablemonthly average≤ .0009 mg/Lall year
Lead, total recoverableweekly average≤ .0013 mg/Lall year
Lead, total recoverablequarterly averagereport only (mg/L)all year
Copper, total recoverablemonthly average≤ .08 mg/Lall year
Copper, total recoverableweekly average≤ .11 mg/Lall year
Copper, total recoverablequarterly averagereport only (mg/L)all year
E. coli, MTEC-MFmonthly average≤ 126 CFU/100mLApr–Oct
E. coli, MTEC-MFmonthly average≤ 630 CFU/100mLJan, Feb, Mar, Nov, Dec
E. coli, MTEC-MFweekly average≤ 252 CFU/100mLApr–Oct
E. coli, MTEC-MFweekly average≤ 1260 CFU/100mLJan, Feb, Mar, Nov, Dec
BOD, 5-day, percent removalminimum≥ 85 %all year
Solids, suspended percent removalminimum≥ 85 %all year

How strict are these limits?

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

Check this month's numbers Email me before each report is due

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MT0031712 · MCP: https://passage-data.com/mcp