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City of Butterfield

Sewage treatment plant, Butterfield, Missouri. NPDES permit MO0126292, in force until Feb 28, 2029. Last 12 months: over a limit 21 times (last July 2026), 2 required values missing, 7 of 27 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 (2 values), outfall INF form IM monthly (2 values), outfall 001 form WA every 24 months
Last report on file
September 2026
Oct 2024 – Sep 2025
19 values over a limit, 0 required values missing, 4 of 28 reports late

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

All 21 values over a limit
Period endingParameterReportedLimitOver by
October 2025E. coli, daily maximum> 2420≤ 126 #/100mL—
November 2025Nitrogen, ammonia total [as N], monthly average8.69≤ 3.1 mg/L180%
December 2025Nitrogen, ammonia total [as N], monthly average9.83≤ 3.1 mg/L217%
December 2025Toxicity [acute], Ceriodaphnia dubia, daily maximum< 1≤ .3 toxic233%
December 2025Toxicity [acute], Ceriodaphnia dubia, daily maximum< 1≤ .3 toxic233%
December 2025Toxicity [acute], Pimephales promelas [Fathead Minnow], daily maximum< 1≤ .3 toxic233%
December 2025Toxicity [acute], Pimephales promelas [Fathead Minnow], daily maximum< 1≤ .3 toxic233%
January 2026Nitrogen, ammonia total [as N], monthly average9.91≤ 3.1 mg/L220%
January 2026pH, maximum9.91≤ 9 SU—
February 2026BOD, 5-day, 20 deg. C, monthly average11≤ 10 mg/L10%
February 2026Nitrogen, ammonia total [as N], daily maximum12.1≤ 10.1 mg/L20%
February 2026Nitrogen, ammonia total [as N], monthly average12.1≤ 2.7 mg/L348%
March 2026Nitrogen, ammonia total [as N], monthly average5.67≤ 3.1 mg/L83%
April 2026BOD, 5-day, 20 deg. C, monthly average12≤ 10 mg/L20%
April 2026E. coli, daily maximum> 2420≤ 126 #/100mL—
April 2026Nitrogen, ammonia total [as N], monthly average4.09≤ 2.7 mg/L51%
May 2026E. coli, daily maximum> 2420≤ 126 #/100mL—
May 2026Nitrogen, ammonia total [as N], monthly average4.92≤ 2.2 mg/L124%
June 2026Nitrogen, ammonia total [as N], monthly average7.95≤ 1.7 mg/L368%
July 2026Chlorine, total residual, daily maximum890≤ 19 ug/L4584%
July 2026Nitrogen, ammonia total [as N], monthly average4.02≤ 1.5 mg/L168%

Limits in force (40)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]daily minimumreport only (mg/L)all year001
Oxygen, dissolved [DO]monthly average minimumreport only (mg/L)all year001
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/LJul001
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LSep001
Nitrogen, ammonia total [as N]daily maximum≤ 10.1 mg/LFeb001
Nitrogen, ammonia total [as N]daily maximum≤ 10.1 mg/LAug001
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LOct001
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LJun001
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LMay001
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LJan, Mar, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LApr001
Nitrogen, ammonia total [as N]monthly average≤ 1.5 mg/LJul001
Nitrogen, ammonia total [as N]monthly average≤ 1.8 mg/LSep001
Nitrogen, ammonia total [as N]monthly average≤ 2.7 mg/LFeb001
Nitrogen, ammonia total [as N]monthly average≤ 1.3 mg/LAug001
Nitrogen, ammonia total [as N]monthly average≤ 2.5 mg/LOct001
Nitrogen, ammonia total [as N]monthly average≤ 1.7 mg/LJun001
Nitrogen, ammonia total [as N]monthly average≤ 2.2 mg/LMay001
Nitrogen, ammonia total [as N]monthly average≤ 3.1 mg/LJan, Mar, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 2.7 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
Chlorine, total residualdaily maximum≤ 19 ug/Lall year001
Chlorine, total residualmonthly average≤ 7 ug/Lall year001
E. colidaily maximum≤ 126 #/100mLall year001
E. colimonthly averagereport only (#/100mL)all year001
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

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/MO0126292 · MCP: https://passage-data.com/mcp