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City of Skidmore

Sewage treatment plant, Skidmore, Missouri. NPDES permit MO0022969 expired Sep 30, 2024; its limits still apply. Last 12 months: over a limit 41 times (last September 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 (2 values), outfall INF form IM monthly (2 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
47 values over a limit, 2 required values missing, 0 of 28 reports late

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

All 41 values over a limit
Period endingParameterReportedLimitOver by
October 2025E. coli, 30-day geometric mean> 2419.6≤ 206 #/100mL—
October 2025E. coli, 7-day geometric mean> 2419.6≤ 1030 #/100mL—
October 2025Nitrogen, ammonia total [as N], daily maximum13.8≤ 7.9 mg/L75%
October 2025Nitrogen, ammonia total [as N], monthly average13.8≤ 2.9 mg/L376%
November 2025BOD, 5-day, 20 deg. C, monthly average48.7≤ 30 mg/L62%
November 2025BOD, 5-day, 20 deg. C, weekly average48.7≤ 45 mg/L8%
November 2025Nitrogen, ammonia total [as N], daily maximum28≤ 7.9 mg/L254%
November 2025Nitrogen, ammonia total [as N], monthly average28≤ 2.9 mg/L866%
December 2025BOD, 5-day, 20 deg. C, monthly average52.2≤ 30 mg/L74%
December 2025BOD, 5-day, 20 deg. C, weekly average52.2≤ 45 mg/L16%
December 2025Nitrogen, ammonia total [as N], daily maximum25.6≤ 7.9 mg/L224%
December 2025Nitrogen, ammonia total [as N], monthly average25.6≤ 2.9 mg/L783%
December 2025Oil and grease [soxhlet extr.] tot., monthly average11.1≤ 10 mg/L11%
January 2026BOD, 5-day, 20 deg. C, monthly average46.4≤ 30 mg/L55%
January 2026BOD, 5-day, 20 deg. C, weekly average46.4≤ 45 mg/L3%
January 2026Nitrogen, ammonia total [as N], daily maximum21.7≤ 7.9 mg/L175%
January 2026Nitrogen, ammonia total [as N], monthly average21.7≤ 2.9 mg/L648%
February 2026BOD, 5-day, 20 deg. C, monthly average71.4≤ 30 mg/L138%
February 2026BOD, 5-day, 20 deg. C, weekly average71.4≤ 45 mg/L59%
February 2026Nitrogen, ammonia total [as N], daily maximum31.5≤ 7.9 mg/L299%
February 2026Nitrogen, ammonia total [as N], monthly average31.5≤ 2.9 mg/L986%
March 2026Nitrogen, ammonia total [as N], daily maximum22.5≤ 7.9 mg/L185%
March 2026Nitrogen, ammonia total [as N], monthly average22.5≤ 2.9 mg/L676%
March 2026Oil and grease [soxhlet extr.] tot., monthly average11≤ 10 mg/L10%
April 2026E. coli, 30-day geometric mean100000≤ 206 #/100mL48444%
April 2026E. coli, 7-day geometric mean100000≤ 1030 #/100mL9609%
April 2026Nitrogen, ammonia total [as N], daily maximum11.4≤ 4.8 mg/L138%
April 2026Nitrogen, ammonia total [as N], monthly average11.4≤ 1.3 mg/L777%
May 2026BOD, 5-day, percent removal, monthly average minimum75≥ 85 %67%
May 2026E. coli, 30-day geometric mean> 2419.6≤ 206 #/100mL—
May 2026E. coli, 7-day geometric mean> 2419.6≤ 1030 #/100mL—
May 2026Solids, total suspended, monthly average40≤ 30 mg/L33%
July 2026E. coli, 30-day geometric mean2420≤ 206 #/100mL1075%
July 2026E. coli, 7-day geometric mean2420≤ 1030 #/100mL135%
August 2026E. coli, 30-day geometric mean> 2419.6≤ 206 #/100mL—
August 2026E. coli, 7-day geometric mean> 2419.6≤ 1030 #/100mL—
August 2026Nitrogen, ammonia total [as N], monthly average3.5≤ 1.3 mg/L169%
September 2026E. coli, 30-day geometric mean> 2419.6≤ 206 #/100mL—
September 2026E. coli, 7-day geometric mean> 2419.6≤ 1030 #/100mL—
September 2026Nitrogen, ammonia total [as N], daily maximum6.08≤ 4.8 mg/L27%
September 2026Nitrogen, ammonia total [as N], monthly average6.08≤ 1.3 mg/L368%

Limits in force (20)

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 maximum≤ 15 mg/Lall year001
Oil and grease [soxhlet extr.] tot.monthly average≤ 10 mg/Lall year001
Nitrogen, ammonia total [as N]daily maximum≤ 4.8 mg/LApr–Sep001
Nitrogen, ammonia total [as N]daily maximum≤ 7.9 mg/LJan, Feb, Mar, Oct, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 1.3 mg/LApr–Sep001
Nitrogen, ammonia total [as N]monthly average≤ 2.9 mg/LJan, Feb, Mar, Oct, Nov, Dec001
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≥ 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/MO0022969 · MCP: https://passage-data.com/mcp