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City of Ellington

Sewage treatment plant, Ellington, Missouri. NPDES permit MO0022896 expired Dec 31, 2024; its limits still apply. Last 12 months: over a limit 33 times (last September 2026), 8 of 32 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form M monthly (18 values), outfall 001 form Q quarterly (8 values), outfall INF form IM monthly (2 values), outfall INF form IQ quarterly (8 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
18 values over a limit, 1 required value missing, 2 of 32 reports late

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

All 33 values over a limit
Period endingParameterReportedLimitOver by
October 2025BOD, 5-day, percent removal, monthly average minimum59.09≥ 65 %17%
October 2025E. coli, 30-day geometric mean191.8≤ 126 #/100mL52%
October 2025Solids, suspended percent removal, monthly average minimum0≥ 65 %186%
October 2025Solids, total suspended, monthly average73≤ 70 mg/L4%
October 2025pH, maximum10.3≤ 9 SU—
December 2025BOD, 5-day, percent removal, monthly average minimum45≥ 65 %57%
December 2025Solids, suspended percent removal, monthly average minimum0≥ 65 %186%
December 2025pH, maximum9.1≤ 9 SU—
February 2026BOD, 5-day, percent removal, monthly average minimum26≥ 65 %111%
February 2026Nitrogen, ammonia total [as N], monthly average5.36≤ 2.7 mg/L99%
February 2026Solids, suspended percent removal, monthly average minimum47≥ 65 %51%
March 2026BOD, 5-day, 20 deg. C, monthly average49≤ 45 mg/L9%
March 2026BOD, 5-day, percent removal, monthly average minimum59≥ 65 %17%
March 2026Solids, suspended percent removal, monthly average minimum22≥ 65 %123%
April 2026Solids, total suspended, monthly average76≤ 70 mg/L9%
April 2026pH, maximum9.8≤ 9 SU—
May 2026Solids, suspended percent removal, monthly average minimum0≥ 65 %186%
May 2026Solids, total suspended, monthly average84≤ 70 mg/L20%
May 2026pH, maximum10.2≤ 9 SU—
June 2026Solids, suspended percent removal, monthly average minimum17≥ 65 %137%
June 2026Solids, total suspended, monthly average128≤ 70 mg/L83%
June 2026Solids, total suspended, weekly average128≤ 110 mg/L16%
June 2026pH, maximum10.1≤ 9 SU—
July 2026BOD, 5-day, percent removal, monthly average minimum48≥ 65 %49%
July 2026Solids, suspended percent removal, monthly average minimum0≥ 65 %186%
July 2026pH, maximum10.3≤ 9 SU—
August 2026BOD, 5-day, percent removal, monthly average minimum57≥ 65 %23%
August 2026Solids, suspended percent removal, monthly average minimum0≥ 65 %186%
August 2026Solids, total suspended, monthly average82≤ 70 mg/L17%
August 2026pH, maximum10.8≤ 9 SU—
September 2026Solids, suspended percent removal, monthly average minimum27≥ 65 %109%
September 2026Solids, total suspended, monthly average85≤ 70 mg/L21%
September 2026pH, maximum10.1≤ 9 SU—

Limits in force (54)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]daily minimumreport only (mg/L)Apr–Oct001
Oxygen, dissolved [DO]monthly average minimumreport only (mg/L)Apr–Oct001
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
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, ammonia total [as N]daily maximum≤ 12.1 mg/LApr001
Nitrogen, ammonia total [as N]daily maximum≤ 10.1 mg/LAug001
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LSep001
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LJan, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LJul001
Nitrogen, ammonia total [as N]daily maximum≤ 10.1 mg/LFeb001
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LMay001
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LJun001
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LOct001
Nitrogen, ammonia total [as N]daily maximum≤ 12 mg/LMar001
Nitrogen, ammonia total [as N]monthly average≤ 2.7 mg/LApr001
Nitrogen, ammonia total [as N]monthly average≤ 1.3 mg/LAug001
Nitrogen, ammonia total [as N]monthly average≤ 1.8 mg/LSep001
Nitrogen, ammonia total [as N]monthly average≤ 3.1 mg/LJan, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 1.5 mg/LJul001
Nitrogen, ammonia total [as N]monthly average≤ 2.7 mg/LFeb001
Nitrogen, ammonia total [as N]monthly average≤ 2.2 mg/LMay001
Nitrogen, ammonia total [as N]monthly average≤ 1.7 mg/LJun001
Nitrogen, ammonia total [as N]monthly average≤ 2.5 mg/LOct001
Nitrogen, ammonia total [as N]monthly average≤ 3.1 mg/LMar001
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
Chlorine, total residualdaily maximum≤ 18 ug/LApr–Oct001
Chlorine, total residualmonthly average≤ 9 ug/LApr–Oct001
E. coli7-day geometric mean≤ 630 #/100mLApr–Oct001
E. coli30-day geometric mean≤ 126 #/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, 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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Your permit document is the final word. As JSON: /api/v1/permits/MO0022896 · MCP: https://passage-data.com/mcp