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Town of Jordan

Sewage treatment plant, Jordan, Montana. NPDES permit MT0021385 expired Jul 31, 2026; its limits still apply. Last 12 months: over a limit 6 times (last January 2026), 189 required values missing, 6 of 19 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (26 values), form Q quarterly (1 value), form Q2 quarterly (2 values), form UP quarterly (3 values)
Last report on file
March 2026
Oct 2024 – Sep 2025
0 values over a limit, 138 required values missing, 20 of 24 reports late

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

Period endingParameterReportedLimitOver by
November 2025Solids, total suspended, monthly average31 mg/L≤ 30 mg/L3%
November 2025Solids, total suspended, monthly average31 mg/L≤ 30 mg/L3%
November 2025pH, daily maximum9.62 SU≤ 9 SU—
January 2026BOD, 5-day, 20 deg. C, monthly average40 mg/L≤ 30 mg/L33%
January 2026E. coli, MTEC-MF, monthly geometric mean800 #/100mL≤ 630 #/100mL27%
January 2026Solids, total suspended, monthly average44 mg/L≤ 30 mg/L47%

Limits in force (34)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximumreport only (deg C)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 maximum≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 12 lb/dall year
BOD, 5-day, 20 deg. Cweekly maximum≤ 17 lb/dall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
pHdaily minimumreport only (SU)all year
pHdaily maximumreport only (SU)all year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly maximum≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 12 lb/dall year
Solids, total suspendedweekly maximum≤ 17 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Oil & Greasemonthly maximum≤ 10 mg/Lall year
Oil & Greasemonthly maximum≤ 10 mg/Lall year
Nitrogen, total [as N]monthly averagereport only (mg/L)Jul–Sep
Nitrogen, total [as N]monthly average≤ 3.2 lb/dJul–Sep
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)Jul–Sep
Phosphorus, total [as P]monthly average≤ 1.3 lb/dJul–Sep
E. coli, MTEC-MFmonthly geometric mean≤ 126 #/100mLApr–Oct
E. coli, MTEC-MFmonthly geometric mean≤ 630 #/100mLJan, Feb, Mar, Nov, Dec
E. coli, MTEC-MFmaximum 7-day geometric mean≤ 252 #/100mLApr–Oct
E. coli, MTEC-MFmaximum 7-day geometric mean≤ 1260 #/100mLJan, Feb, Mar, Nov, Dec
BOD, 5-day, percent removalminimum≥ 85 %all year
Solids, suspended percent removalminimum≥ 85 %all year
Oil and grease visualvaluereport only (Y=0;N=1)all year

How strict are these limits?

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/MT0021385 · MCP: https://passage-data.com/mcp