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City of Exeter

Sewage treatment plant, Exeter, Missouri. NPDES permit MO0086291 expired Dec 31, 2025; its limits still apply. 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 (22 values), outfall INF form IM monthly (2 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
21 values over a limit, 0 required values missing, 2 of 24 reports late

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

All 26 values over a limit
Period endingParameterReportedLimitOver by
November 2025BOD, 5-day, 20 deg. C, monthly average15.4≤ 10 mg/L54%
January 2026BOD, 5-day, percent removal, monthly average minimum0≥ 85 %567%
January 2026Solids, suspended percent removal, monthly average minimum0≥ 85 %567%
February 2026Aluminum, total recoverable, monthly average2060≤ 239 ug/L762%
February 2026Nitrogen, ammonia total [as N], monthly average10.67≤ 2.7 mg/L295%
February 2026Phosphorus, total [as P], monthly average1.46≤ .5 mg/L192%
March 2026Solids, suspended percent removal, monthly average minimum71.7≥ 85 %89%
April 2026BOD, 5-day, 20 deg. C, monthly average20.1≤ 10 mg/L101%
April 2026BOD, 5-day, 20 deg. C, weekly average20.1≤ 15 mg/L34%
April 2026Solids, total suspended, monthly average26.6≤ 15 mg/L77%
April 2026Solids, total suspended, weekly average26.6≤ 20 mg/L33%
May 2026E. coli, daily maximum2002≤ 126 #/100mL1489%
May 2026Nitrogen, ammonia total [as N], monthly average5.2≤ 2.2 mg/L136%
May 2026Phosphorus, total [as P], monthly average.948≤ .5 mg/L90%
May 2026Solids, suspended percent removal, monthly average minimum55.7≥ 85 %195%
June 2026BOD, 5-day, 20 deg. C, monthly average18.1≤ 10 mg/L81%
June 2026BOD, 5-day, 20 deg. C, weekly average18.1≤ 15 mg/L21%
June 2026Phosphorus, total [as P], monthly average.908≤ .5 mg/L82%
July 2026BOD, 5-day, 20 deg. C, monthly average17.1≤ 10 mg/L71%
July 2026BOD, 5-day, 20 deg. C, weekly average15.3≤ 15 mg/L2%
July 2026E. coli, daily maximum190≤ 126 #/100mL51%
July 2026Phosphorus, total [as P], monthly average.9985≤ .5 mg/L100%
August 2026Aluminum, total recoverable, monthly average252≤ 239 ug/L5%
August 2026BOD, 5-day, 20 deg. C, monthly average18.3≤ 10 mg/L83%
August 2026BOD, 5-day, 20 deg. C, weekly average18.3≤ 15 mg/L22%
August 2026Phosphorus, total [as P], monthly average1.17≤ .5 mg/L134%

Limits in force (40)

ParameterStatisticLimitMonthsOutfall
BOD, 5-day, 20 deg. Cweekly average≤ 15 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/Lall year001
pHminimum≥ 6.5 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedweekly average≤ 20 mg/Lall year001
Solids, total suspendedmonthly average≤ 15 mg/Lall year001
Oil and grease [soxhlet extr.] tot.daily maximum≤ 15 mg/Lall year001
Oil and grease [soxhlet extr.] tot.monthly average≤ 10 mg/Lall year001
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LJan, Mar, Nov, Dec001
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≤ 12.1 mg/LSep001
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/LApr001
Nitrogen, ammonia total [as N]daily maximum≤ 10.1 mg/LAug001
Nitrogen, ammonia total [as N]monthly average≤ 3.1 mg/LJan, Mar, Nov, Dec001
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≤ 1.8 mg/LSep001
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≤ 2.7 mg/LApr001
Nitrogen, ammonia total [as N]monthly average≤ 1.3 mg/LAug001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]monthly average≤ .5 mg/Lall year001
Aluminum, total recoverabledaily maximum≤ 750 ug/Lall year001
Aluminum, total recoverablemonthly average≤ 239 ug/Lall 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/Lall year001
Chlorine, total residualmonthly average≤ 6 ug/Lall year001
E. colidaily maximum≤ 126 #/100mLall year001
E. colimonthly averagereport only (#/100mL)all 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

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/MO0086291 · MCP: https://passage-data.com/mcp