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Callaway County Sewer District

Sewage treatment plant, Fulton, Missouri. NPDES permit MO0116301 expired Jun 30, 2025; its limits still apply. Last 12 months: over a limit 11 times (last June 2026), 1 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, 10 required values missing, 0 of 4 reports late

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

Period endingParameterReportedLimitOver by
December 2025Nitrogen, ammonia total [as N], daily maximum18.2≤ 12.1 mg/L50%
December 2025Nitrogen, ammonia total [as N], monthly average18.2≤ 3.1 mg/L487%
March 2026Nitrogen, ammonia total [as N], daily maximum24≤ 10.1 mg/L138%
March 2026Nitrogen, ammonia total [as N], monthly average24≤ 2.7 mg/L789%
March 2026Solids, total suspended, monthly average100≤ 70 mg/L43%
March 2026pH, maximum9.15≤ 9 SU—
June 2026BOD, 5-day, 20 deg. C, monthly average77.2≤ 45 mg/L72%
June 2026BOD, 5-day, 20 deg. C, weekly average77.2≤ 65 mg/L19%
June 2026E. coli, 30-day geometric mean16800≤ 206 #/100mL8055%
June 2026E. coli, 7-day geometric mean16800≤ 1030 #/100mL1531%
June 2026Nitrogen, ammonia total [as N], monthly average2.2≤ 1.8 mg/L22%

Limits in force (22)

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≤ 65 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 45 mg/Lall year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedweekly average≤ 110 mg/Lall year
Solids, total suspendedmonthly average≤ 70 mg/Lall year
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LOct–Dec
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LApr–Jun
Nitrogen, ammonia total [as N]daily maximum≤ 10.1 mg/LJan–Mar
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LJul–Sep
Nitrogen, ammonia total [as N]monthly average≤ 3.1 mg/LOct–Dec
Nitrogen, ammonia total [as N]monthly average≤ 1.8 mg/LApr–Jun
Nitrogen, ammonia total [as N]monthly average≤ 2.7 mg/LJan–Mar
Nitrogen, ammonia total [as N]monthly average≤ 1.3 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. coli7-day geometric mean≤ 1030 #/100mLApr–Dec
E. coli30-day geometric mean≤ 206 #/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/MO0116301 · MCP: https://passage-data.com/mcp