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Joe Hybl

Sewerage Systems, Wright City, Missouri. NPDES permit MO0125181 expired Sep 30, 2025; its limits still apply. Last 12 months: over a limit 5 times (last June 2026), 3 of 3 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form Q quarterly (16 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
7 values over a limit, 16 required values missing, 3 of 4 reports late

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

Period endingParameterReportedLimitOver by
December 2025E. coli, 30-day geometric mean2700≤ 206 MPN/100mL1211%
December 2025E. coli, daily maximum2700≤ 1030 MPN/100mL162%
June 2026E. coli, 30-day geometric mean1060≤ 206 MPN/100mL415%
June 2026E. coli, daily maximum1060≤ 1030 MPN/100mL3%
June 2026Nitrogen, ammonia total [as N], monthly average4.3≤ 1.8 mg/L139%

Limits in force (20)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily minimumreport only (mg/L)Apr–Dec
Oxygen, dissolved [DO]monthly average minimumreport only (mg/L)Apr–Dec
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jan, Feb, Mar, Oct, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LApr–Jun
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LJul–Sep
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Jan, Feb, Mar, Oct, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 1.8 mg/LApr–Jun
Nitrogen, ammonia total [as N]monthly average≤ 1.4 mg/LJul–Sep
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≤ 18 ug/LApr–Dec
Chlorine, total residualmonthly average≤ 9 ug/LApr–Dec
E. colidaily maximum≤ 1030 MPN/100mLApr–Dec
E. coli30-day geometric mean≤ 206 MPN/100mLApr–Dec

How strict are these limits?

Cited limits by parameter: Missouri'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/MO0125181 · MCP: https://passage-data.com/mcp