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Village of Kelso

Sewage treatment plant, Kelso, Missouri. NPDES permit MO0115118, in force until Aug 31, 2028. Last 12 months: over a limit 25 times (last September 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form M monthly (14 values), outfall INF form IM monthly (2 values)
Renewal application due
Mar 4, 2028 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
23 values over a limit, 0 required values missing, 0 of 24 reports late

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

All 25 values over a limit
Period endingParameterReportedLimitOver by
October 2025Solids, suspended percent removal, monthly average minimum63≥ 65 %6%
October 2025Solids, total suspended, monthly average74≤ 70 mg/L6%
November 2025Solids, suspended percent removal, monthly average minimum60≥ 65 %14%
January 2026Nitrogen, ammonia total [as N], monthly average6.94≤ 3.1 mg/L124%
February 2026Nitrogen, ammonia total [as N], daily maximum15≤ 12.1 mg/L24%
February 2026Nitrogen, ammonia total [as N], monthly average15≤ 3.1 mg/L384%
March 2026Nitrogen, ammonia total [as N], daily maximum16.7≤ 10.1 mg/L65%
March 2026Nitrogen, ammonia total [as N], monthly average16.7≤ 2.7 mg/L519%
March 2026Solids, suspended percent removal, monthly average minimum61≥ 65 %11%
April 2026BOD, 5-day, 20 deg. C, monthly average53.2≤ 45 mg/L18%
April 2026BOD, 5-day, percent removal, monthly average minimum58≥ 65 %20%
April 2026Solids, suspended percent removal, monthly average minimum55≥ 65 %29%
May 2026Solids, suspended percent removal, monthly average minimum52≥ 65 %37%
May 2026Solids, total suspended, monthly average79≤ 70 mg/L13%
June 2026Nitrogen, ammonia total [as N], monthly average2.32≤ 1.3 mg/L78%
June 2026Solids, suspended percent removal, monthly average minimum52≥ 65 %37%
July 2026Nitrogen, ammonia total [as N], monthly average3.35≤ .9 mg/L272%
August 2026BOD, 5-day, 20 deg. C, monthly average53.8≤ 45 mg/L20%
August 2026BOD, 5-day, percent removal, monthly average minimum60≥ 65 %14%
August 2026Solids, suspended percent removal, monthly average minimum0≥ 65 %186%
August 2026Solids, total suspended, monthly average143≤ 70 mg/L104%
August 2026Solids, total suspended, weekly average143≤ 110 mg/L30%
August 2026pH, maximum9.23≤ 9 SU—
September 2026Solids, suspended percent removal, monthly average minimum22≥ 65 %123%
September 2026Solids, total suspended, monthly average94≤ 70 mg/L34%

Limits in force (32)

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≤ 110 mg/Lall year001
Solids, total suspendedmonthly average≤ 70 mg/Lall year001
Nitrogen, ammonia total [as N]daily maximum≤ 8.4 mg/LSep001
Nitrogen, ammonia total [as N]daily maximum≤ 10.1 mg/LJun001
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LJan, Feb001
Nitrogen, ammonia total [as N]daily maximum≤ 8.4 mg/LJul, Aug001
Nitrogen, ammonia total [as N]daily maximum≤ 8.4 mg/LNov001
Nitrogen, ammonia total [as N]daily maximum≤ 10.1 mg/LMar, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LMay001
Nitrogen, ammonia total [as N]daily maximum≤ 8.4 mg/LOct001
Nitrogen, ammonia total [as N]daily maximum≤ 8.4 mg/LApr001
Nitrogen, ammonia total [as N]monthly average≤ 1.2 mg/LSep001
Nitrogen, ammonia total [as N]monthly average≤ 1.3 mg/LJun001
Nitrogen, ammonia total [as N]monthly average≤ 3.1 mg/LJan, Feb001
Nitrogen, ammonia total [as N]monthly average≤ .9 mg/LJul, Aug001
Nitrogen, ammonia total [as N]monthly average≤ 2.4 mg/LNov001
Nitrogen, ammonia total [as N]monthly average≤ 2.7 mg/LMar, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 2.1 mg/LMay001
Nitrogen, ammonia total [as N]monthly average≤ 1.8 mg/LOct001
Nitrogen, ammonia total [as N]monthly average≤ 2.1 mg/LApr001
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–Oct001
E. coli30-day geometric mean≤ 206 #/100mLApr–Oct001
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/MO0115118 · MCP: https://passage-data.com/mcp