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Jefferson County Public Sewer District

Sewage treatment plant, De Soto, Missouri. NPDES permit MO0036382, in force until Oct 31, 2027. Last 12 months: over a limit 19 times (last August 2026), 14 required values missing, 6 of 30 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 (8 values), outfall INF form IM monthly (2 values), outfall INF form IQ quarterly (8 values)
Renewal application due
May 4, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
21 values over a limit, 30 required values missing, 4 of 32 reports late

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

All 19 values over a limit
Period endingParameterReportedLimitOver by
October 2025Solids, suspended percent removal, monthly average minimum57≥ 65 %23%
December 2025Nitrogen, ammonia total [as N], daily maximum15.7≤ 12.1 mg/L30%
December 2025Nitrogen, ammonia total [as N], monthly average15.7≤ 3.1 mg/L406%
January 2026Nitrogen, ammonia total [as N], daily maximum19.2≤ 12.1 mg/L59%
January 2026Nitrogen, ammonia total [as N], monthly average19.2≤ 3.1 mg/L519%
January 2026Solids, suspended percent removal, monthly average minimum61≥ 65 %11%
January 2026Solids, total suspended, monthly average32≤ 30 mg/L7%
February 2026BOD, 5-day, 20 deg. C, monthly average33.2≤ 30 mg/L11%
February 2026Nitrogen, ammonia total [as N], daily maximum14.9≤ 10.1 mg/L48%
February 2026Nitrogen, ammonia total [as N], monthly average14.9≤ 2.7 mg/L452%
February 2026Solids, suspended percent removal, monthly average minimum42≥ 65 %66%
February 2026Solids, total suspended, monthly average39.3≤ 30 mg/L31%
March 2026Nitrogen, ammonia total [as N], monthly average8.6≤ 3.1 mg/L177%
March 2026Solids, suspended percent removal, monthly average minimum56≥ 65 %26%
April 2026Solids, suspended percent removal, monthly average minimum48≥ 65 %49%
June 2026Nitrogen, ammonia total [as N], monthly average11.5≤ 1.7 mg/L576%
August 2026E. coli, 30-day geometric mean141.96≤ 126 #/100mL13%
August 2026Solids, suspended percent removal, monthly average minimum58.1≥ 65 %20%
August 2026Solids, total suspended, monthly average44≤ 30 mg/L47%

Limits in force (48)

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≤ 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/LJan, Mar, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LApr001
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]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≤ 3.1 mg/LJan, Mar, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 2.7 mg/LApr001
Nitrogen, ammonia total [as N]monthly average≤ 1.7 mg/LJun001
Nitrogen, ammonia total [as N]monthly average≤ 2.2 mg/LMay001
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
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≤ 630 #/100mLApr–Oct001
E. coli30-day geometric mean≤ 126 #/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
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/MO0036382 · MCP: https://passage-data.com/mcp