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Labadie Creek Watershed Sewer District

Sewage treatment plant, Labadie, Missouri. NPDES permit MO0114910 expired Jun 30, 2026; its limits still apply. Last 12 months: over a limit 46 times (last September 2026), 5 of 20 reports late. 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 IQ quarterly (2 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
37 values over a limit, 36 required values missing, 13 of 20 reports late

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

All 46 values over a limit
Period endingParameterReportedLimitOver by
October 2025E. coli, 30-day geometric mean7800≤ 206 #/100mL3686%
October 2025E. coli, 7-day geometric mean7800≤ 1030 #/100mL657%
October 2025Nitrogen, ammonia total [as N], daily maximum9.46≤ 8.6 mg/L10%
October 2025Nitrogen, ammonia total [as N], monthly average9.46≤ 5.6 mg/L69%
October 2025Solids, total suspended, monthly average34≤ 30 mg/L13%
January 2026Nitrogen, ammonia total [as N], monthly average10.96≤ 9.9 mg/L11%
February 2026Nitrogen, ammonia total [as N], daily maximum13.53≤ 12.4 mg/L9%
February 2026Nitrogen, ammonia total [as N], monthly average13.53≤ 9.9 mg/L37%
March 2026BOD, 5-day, 20 deg. C, monthly average49≤ 30 mg/L63%
March 2026BOD, 5-day, 20 deg. C, weekly average49≤ 45 mg/L9%
March 2026BOD, 5-day, percent removal, monthly average minimum60≥ 65 %14%
March 2026Nitrogen, ammonia total [as N], monthly average8.93≤ 8.7 mg/L3%
March 2026Solids, suspended percent removal, monthly average minimum13≥ 65 %149%
March 2026Solids, total suspended, monthly average61≤ 30 mg/L103%
March 2026Solids, total suspended, weekly average61≤ 45 mg/L36%
April 2026BOD, 5-day, 20 deg. C, monthly average48≤ 30 mg/L60%
April 2026BOD, 5-day, 20 deg. C, weekly average48≤ 45 mg/L7%
April 2026E. coli, 30-day geometric mean4600≤ 206 #/100mL2133%
April 2026E. coli, 7-day geometric mean4600≤ 1030 #/100mL347%
April 2026Solids, total suspended, monthly average42≤ 30 mg/L40%
May 2026E. coli, 30-day geometric mean11400≤ 206 #/100mL5434%
May 2026E. coli, 7-day geometric mean11400≤ 1030 #/100mL1007%
June 2026E. coli, 30-day geometric mean7900≤ 206 #/100mL3735%
June 2026E. coli, 7-day geometric mean7900≤ 1030 #/100mL667%
June 2026Nitrogen, ammonia total [as N], monthly average6.66≤ 4.2 mg/L59%
June 2026Solids, total suspended, monthly average36≤ 30 mg/L20%
July 2026E. coli, 30-day geometric mean11700≤ 206 #/100mL5580%
July 2026E. coli, 7-day geometric mean11700≤ 1030 #/100mL1036%
July 2026Nitrogen, ammonia total [as N], daily maximum12.32≤ 8.6 mg/L43%
July 2026Nitrogen, ammonia total [as N], monthly average12.32≤ 2.9 mg/L325%
July 2026Solids, total suspended, monthly average46≤ 30 mg/L53%
July 2026Solids, total suspended, weekly average46≤ 45 mg/L2%
August 2026E. coli, 30-day geometric mean14300≤ 206 #/100mL6842%
August 2026E. coli, 7-day geometric mean14300≤ 1030 #/100mL1288%
August 2026Nitrogen, ammonia total [as N], daily maximum9.04≤ 8.6 mg/L5%
August 2026Nitrogen, ammonia total [as N], monthly average9.04≤ 2.9 mg/L212%
August 2026Solids, total suspended, monthly average76≤ 30 mg/L153%
August 2026Solids, total suspended, weekly average76≤ 45 mg/L69%
September 2026BOD, 5-day, 20 deg. C, monthly average31≤ 30 mg/L3%
September 2026E. coli, 30-day geometric mean11700≤ 206 #/100mL5580%
September 2026E. coli, 7-day geometric mean11700≤ 1030 #/100mL1036%
September 2026Nitrogen, ammonia total [as N], daily maximum15.29≤ 8.6 mg/L78%
September 2026Nitrogen, ammonia total [as N], monthly average15.29≤ 3.7 mg/L313%
September 2026Solids, suspended percent removal, monthly average minimum46≥ 65 %54%
September 2026Solids, total suspended, monthly average68≤ 30 mg/L127%
September 2026Solids, total suspended, weekly average68≤ 45 mg/L51%

Limits in force (34)

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 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≤ 8.6 mg/LSep001
Nitrogen, ammonia total [as N]daily maximum≤ 12.4 mg/LMay001
Nitrogen, ammonia total [as N]daily maximum≤ 8.6 mg/LNov001
Nitrogen, ammonia total [as N]daily maximum≤ 8.6 mg/LOct001
Nitrogen, ammonia total [as N]daily maximum≤ 12.4 mg/LJan, Feb001
Nitrogen, ammonia total [as N]daily maximum≤ 8.6 mg/LJul, Aug001
Nitrogen, ammonia total [as N]daily maximum≤ 8.6 mg/LApr001
Nitrogen, ammonia total [as N]daily maximum≤ 10.4 mg/LJun001
Nitrogen, ammonia total [as N]daily maximum≤ 10.4 mg/LMar, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 3.7 mg/LSep001
Nitrogen, ammonia total [as N]monthly average≤ 6.5 mg/LMay001
Nitrogen, ammonia total [as N]monthly average≤ 7.5 mg/LNov001
Nitrogen, ammonia total [as N]monthly average≤ 5.6 mg/LOct001
Nitrogen, ammonia total [as N]monthly average≤ 9.9 mg/LJan, Feb001
Nitrogen, ammonia total [as N]monthly average≤ 2.9 mg/LJul, Aug001
Nitrogen, ammonia total [as N]monthly average≤ 6.8 mg/LApr001
Nitrogen, ammonia total [as N]monthly average≤ 4.2 mg/LJun001
Nitrogen, ammonia total [as N]monthly average≤ 8.7 mg/LMar, 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≥ 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

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/MO0114910 · MCP: https://passage-data.com/mcp