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North Troy Business Park Association

Nonresidential Building Operators, Troy, Missouri. NPDES permit MO0128872, in force until Aug 31, 2030. Last 12 months: over a limit 18 times (last September 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form Q quarterly (18 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
12 values over a limit, 0 required values missing, 0 of 3 reports late

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

All 18 values over a limit
Period endingParameterReportedLimitOver by
December 2025Nitrogen, ammonia total [as N], monthly average5.92≤ 2.2 mg/L169%
March 2026BOD, 5-day, 20 deg. C, monthly average15.2≤ 10 mg/L52%
March 2026BOD, 5-day, 20 deg. C, weekly average15.2≤ 15 mg/L1%
March 2026E. coli, daily maximum2419.6≤ 126 #/100mL1820%
March 2026Nitrogen, ammonia total [as N], daily maximum17.61≤ 12 mg/L47%
March 2026Nitrogen, ammonia total [as N], monthly average17.61≤ 2.6 mg/L577%
March 2026Solids, total suspended, monthly average28≤ 15 mg/L87%
March 2026Solids, total suspended, weekly average28≤ 20 mg/L40%
June 2026BOD, 5-day, 20 deg. C, monthly average19≤ 10 mg/L90%
June 2026BOD, 5-day, 20 deg. C, weekly average19≤ 15 mg/L27%
June 2026E. coli, daily maximum2419.6≤ 126 #/100mL1820%
June 2026Nitrogen, ammonia total [as N], daily maximum47≤ 5.9 mg/L697%
June 2026Nitrogen, ammonia total [as N], monthly average47≤ 1.2 mg/L3817%
September 2026BOD, 5-day, 20 deg. C, monthly average26.55≤ 10 mg/L166%
September 2026BOD, 5-day, 20 deg. C, weekly average26.55≤ 15 mg/L77%
September 2026E. coli, daily maximum2419.6≤ 126 #/100mL1820%
September 2026Solids, total suspended, monthly average38≤ 15 mg/L153%
September 2026Solids, total suspended, weekly average38≤ 20 mg/L90%

Limits in force (24)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily minimumreport only (mg/L)all year
Oxygen, dissolved [DO]monthly average minimumreport only (mg/L)all year
BOD, 5-day, 20 deg. Cweekly average≤ 15 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/Lall year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedweekly average≤ 20 mg/Lall year
Solids, total suspendedmonthly average≤ 15 mg/Lall year
Oil and grease [soxhlet extr.] tot.daily maximumreport only (mg/L)all year
Oil and grease [soxhlet extr.] tot.monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]daily maximum≤ 12 mg/LJan–Mar
Nitrogen, ammonia total [as N]daily maximum≤ 8.4 mg/LOct–Dec
Nitrogen, ammonia total [as N]daily maximum≤ 5.9 mg/LJul–Sep
Nitrogen, ammonia total [as N]daily maximum≤ 5.9 mg/LApr–Jun
Nitrogen, ammonia total [as N]monthly average≤ 2.6 mg/LJan–Mar
Nitrogen, ammonia total [as N]monthly average≤ 2.2 mg/LOct–Dec
Nitrogen, ammonia total [as N]monthly average≤ 1 mg/LJul–Sep
Nitrogen, ammonia total [as N]monthly average≤ 1.2 mg/LApr–Jun
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Chlorine, total residualdaily maximum≤ 17 ug/Lall year
Chlorine, total residualmonthly average≤ 8 ug/Lall year
E. colidaily maximum≤ 126 #/100mLall year
E. colimonthly averagereport only (#/100mL)all year

How strict are these limits?

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

Same industry: the 188 Real Estate permits in Missouri.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MO0128872 · MCP: https://passage-data.com/mcp