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City of Hamilton

Sewage treatment plant, Hamilton, Missouri. NPDES permit MO0022080, in force until Mar 31, 2028. Last 12 months: over a limit 26 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form M monthly (14 values), outfall 001 form Q quarterly (10 values), outfall INF form IM monthly (2 values), outfall INF form IQ quarterly (10 values)
Renewal application due
Oct 3, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
19 values over a limit, 0 required values missing, 0 of 32 reports late

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

All 26 values over a limit
Period endingParameterReportedLimitOver by
October 2025BOD, 5-day, percent removal, monthly average minimum53.7≥ 65 %32%
October 2025E. coli, 30-day geometric mean1889.23≤ 206 #/100mL817%
October 2025E. coli, 7-day geometric mean1889.23≤ 1030 #/100mL83%
October 2025Solids, suspended percent removal, monthly average minimum5.9≥ 65 %169%
March 2026BOD, 5-day, 20 deg. C, monthly average50.5≤ 45 mg/L12%
March 2026Solids, suspended percent removal, monthly average minimum35.71≥ 65 %84%
April 2026BOD, 5-day, percent removal, monthly average minimum60.6≥ 65 %13%
April 2026E. coli, 30-day geometric mean960.088≤ 206 #/100mL366%
April 2026E. coli, 7-day geometric mean> 2419.6≤ 1030 #/100mL—
April 2026Solids, suspended percent removal, monthly average minimum60≥ 65 %14%
May 2026BOD, 5-day, percent removal, monthly average minimum57.7≥ 65 %21%
May 2026E. coli, 30-day geometric mean1962.06≤ 206 #/100mL852%
May 2026E. coli, 7-day geometric mean> 2419.6≤ 1030 #/100mL—
May 2026Solids, suspended percent removal, monthly average minimum46.15≥ 65 %54%
May 2026Solids, total suspended, monthly average84≤ 80 mg/L5%
May 2026pH, maximum9.21≤ 9 SU—
June 2026E. coli, 30-day geometric mean422.94≤ 206 #/100mL105%
June 2026Solids, suspended percent removal, monthly average minimum55≥ 65 %29%
July 2026BOD, 5-day, percent removal, monthly average minimum55.2≥ 65 %28%
July 2026E. coli, 30-day geometric mean860.89≤ 206 #/100mL318%
July 2026E. coli, 7-day geometric mean> 2419.6≤ 1030 #/100mL—
July 2026Solids, suspended percent removal, monthly average minimum54≥ 65 %31%
August 2026BOD, 5-day, percent removal, monthly average minimum0≥ 65 %186%
August 2026E. coli, 30-day geometric mean1690.41≤ 206 #/100mL721%
August 2026E. coli, 7-day geometric mean> 2419.6≤ 1030 #/100mL—
August 2026Solids, suspended percent removal, monthly average minimum40≥ 65 %71%

Limits in force (36)

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
Oil and grease [soxhlet extr.] tot.daily maximumreport only (mg/L)all year001
Oil and grease [soxhlet extr.] tot.monthly averagereport only (mg/L)all year001
Nitrogen, total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, total [as N]monthly averagereport only (mg/L)all 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
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year001
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year001
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]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
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
Nitrogen, total [as N]daily maximumreport only (mg/L)all yearINF
Nitrogen, total [as N]monthly averagereport only (mg/L)all yearINF
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all yearINF
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all yearINF
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all yearINF
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all yearINF
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all yearINF
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all yearINF
Phosphorus, total [as P]daily maximumreport only (mg/L)all yearINF
Phosphorus, total [as P]monthly averagereport only (mg/L)all yearINF

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/MO0022080 · MCP: https://passage-data.com/mcp