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Callaway County Sewer District

Sewage treatment plant, Kingdom City, Missouri. NPDES permit MO0099139, in force until Oct 31, 2030. Last 12 months: over a limit 2 times (last June 2026), 16 required values missing, 2 of 8 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form Q quarterly (14 values), outfall INF form IQ quarterly (2 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
2 values over a limit, 14 required values missing, 1 of 6 reports late

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

Period endingParameterReportedLimitOver by
March 2026Nitrogen, ammonia total [as N], monthly average9.5≤ 2.7 mg/L252%
June 2026Nitrogen, ammonia total [as N], monthly average4.3≤ 1.8 mg/L139%

Limits in force (22)

ParameterStatisticLimitMonthsOutfall
BOD, 5-day, 20 deg. Cweekly average≤ 65 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 45 mg/Lall year001
pHminimum≥ 6.5 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedweekly average≤ 120 mg/Lall year001
Solids, total suspendedmonthly average≤ 80 mg/Lall year001
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LOct–Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 10.1 mg/LJan–Mar001
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LApr–Jun001
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LJul–Sep001
Nitrogen, ammonia total [as N]monthly average≤ 3.1 mg/LOct–Dec001
Nitrogen, ammonia total [as N]monthly average≤ 2.7 mg/LJan–Mar001
Nitrogen, ammonia total [as N]monthly average≤ 1.8 mg/LApr–Jun001
Nitrogen, ammonia total [as N]monthly average≤ 1.3 mg/LJul–Sep001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
E. coli7-day geometric mean≤ 1030 #/100mLApr–Dec001
E. coli30-day geometric mean≤ 206 #/100mLApr–Dec001
BOD, 5-day, percent removalmonthly average minimum≥ 65 %all year001
Solids, suspended percent removalmonthly average minimum≥ 65 %all year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all yearINF
Solids, total suspendedmonthly averagereport only (mg/L)all yearINF

How strict are these limits?

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

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MO0099139 · MCP: https://passage-data.com/mcp