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City of Caruthersville

Sewage treatment plant, major discharger, Caruthersville, Missouri. NPDES permit MO0095028 expired Dec 31, 2025; its limits still apply. Last 12 months: over a limit 8 times (last August 2026), 39 required values missing, 8 of 26 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form M monthly (22 values), outfall 001 form Q quarterly (8 values), outfall INF form IM monthly (10 values), outfall 001 form WA yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
19 values over a limit, 2 required values missing, 1 of 29 reports late

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

Period endingParameterReportedLimitOver by
December 2025BOD, 5-day, 20 deg. C, monthly average34.91≤ 30 mg/L16%
December 2025BOD, 5-day, 20 deg. C, weekly average134≤ 45 mg/L198%
December 2025Nitrogen, ammonia total [as N], daily maximum18≤ 14.4 mg/L25%
December 2025Nitrogen, ammonia total [as N], monthly average3.74≤ 3.5 mg/L7%
January 2026pH, minimum6.16≥ 6.5 SU—
February 2026Solids, suspended percent removal, monthly average minimum0≥ 85 %567%
August 2026Nitrogen, ammonia total [as N], daily maximum12.8≤ 12.1 mg/L6%
August 2026Nitrogen, ammonia total [as N], monthly average7.95≤ 1.2 mg/L563%

Limits in force (60)

ParameterStatisticLimitMonthsOutfall
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year001
pHminimum≥ 6.5 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedweekly average≤ 45 mg/Lall year001
Solids, total suspendedmonthly average≤ 30 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≤ 14.4 mg/LDec001
Nitrogen, ammonia total [as N]daily maximum≤ 14.4 mg/LJul001
Nitrogen, ammonia total [as N]daily maximum≤ 14.4 mg/LJun001
Nitrogen, ammonia total [as N]daily maximum≤ 17 mg/LJan–Mar001
Nitrogen, ammonia total [as N]daily maximum≤ 14.4 mg/LSep001
Nitrogen, ammonia total [as N]daily maximum≤ 10.1 mg/LOct001
Nitrogen, ammonia total [as N]daily maximum≤ 23 mg/LMay001
Nitrogen, ammonia total [as N]daily maximum≤ 14.4 mg/LApr001
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LAug001
Nitrogen, ammonia total [as N]daily maximum≤ 17 mg/LNov001
Nitrogen, ammonia total [as N]monthly average≤ 3.5 mg/LDec001
Nitrogen, ammonia total [as N]monthly average≤ 1.4 mg/LJul001
Nitrogen, ammonia total [as N]monthly average≤ 1.7 mg/LJun001
Nitrogen, ammonia total [as N]monthly average≤ 3.9 mg/LJan–Mar001
Nitrogen, ammonia total [as N]monthly average≤ 1.7 mg/LSep001
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/LOct001
Nitrogen, ammonia total [as N]monthly average≤ 2.9 mg/LMay001
Nitrogen, ammonia total [as N]monthly average≤ 2.8 mg/LApr001
Nitrogen, ammonia total [as N]monthly average≤ 1.2 mg/LAug001
Nitrogen, ammonia total [as N]monthly average≤ 3.9 mg/LNov001
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
Nickel, total recoverabledaily maximumreport only (ug/L)all year001
Nickel, total recoverablemonthly averagereport only (ug/L)all year001
Cadmium, total recoverabledaily maximumreport only (ug/L)all year001
Cadmium, total recoverablemonthly averagereport only (ug/L)all year001
Lead, total recoverabledaily maximum≤ 8.1 ug/Lall year001
Lead, total recoverablemonthly average≤ 3.3 ug/Lall year001
Copper, total recoverabledaily maximumreport only (ug/L)all year001
Copper, total recoverablemonthly averagereport only (ug/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
Toxicity [acute], Ceriodaphnia dubiadaily maximum≤ .3 toxicall year001
Toxicity [acute], Pimephales promelas [Fathead Minnow]daily maximum≤ .3 toxicall year001
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %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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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MO0095028 · MCP: https://passage-data.com/mcp