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Boone County Regional Sewer District

Sewage treatment plant, Columbia, Missouri. NPDES permit MO0053376 expired Mar 31, 2025; its limits still apply. Last 12 months: no values over a limit, 8 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form Q quarterly (10 values), outfall 002 form Q quarterly (10 values), outfall 001 form A yearly, outfall 002 form A yearly, outfall IF1 form A yearly, outfall IF2 form A yearly
Last report on file
June 2026
Oct 2024 – Sep 2025
2 values over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (28)

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 maximumreport only (mg/L)all year001
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
BOD, 5-day, percent removalmonthly average minimum≥ 65 %all year001
Solids, suspended percent removalmonthly average minimum≥ 65 %all year001
BOD, 5-day, 20 deg. Cweekly average≤ 65 mg/Lall year002
BOD, 5-day, 20 deg. Cmonthly average≤ 45 mg/Lall year002
pHminimum≥ 6.5 SUall year002
pHmaximum≤ 9 SUall year002
Solids, total suspendedweekly average≤ 120 mg/Lall year002
Solids, total suspendedmonthly average≤ 80 mg/Lall year002
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year002
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year002
BOD, 5-day, percent removalmonthly average minimum≥ 65 %all year002
Solids, suspended percent removalmonthly average minimum≥ 65 %all year002
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all yearIF1
Solids, total suspendedmonthly averagereport only (mg/L)all yearIF1
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all yearIF2
Solids, total suspendedmonthly averagereport only (mg/L)all yearIF2

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/MO0053376 · MCP: https://passage-data.com/mcp