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City of Blackwater

Sewage treatment plant, Blackwater, Missouri. NPDES permit MO0101648, in force until Jun 30, 2027. Last 12 months: over a limit 13 times (last July 2026), 18 required values missing, 13 of 17 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form M monthly (12 values), outfall 001 form Q quarterly (4 values), outfall INF form IQ quarterly (2 values)
Renewal application due
Jan 1, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
3 values over a limit, 70 required values missing, 13 of 20 reports late

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

All 13 values over a limit
Period endingParameterReportedLimitOver by
March 2026BOD, 5-day, 20 deg. C, monthly average31≤ 30 mg/L3%
March 2026Nitrogen, ammonia total [as N], daily maximum14.2≤ 10.1 mg/L41%
March 2026Nitrogen, ammonia total [as N], monthly average14.2≤ 2.7 mg/L426%
March 2026Solids, suspended percent removal, monthly average minimum57≥ 65 %23%
March 2026Solids, total suspended, monthly average317≤ 60 mg/L428%
March 2026Solids, total suspended, weekly average317≤ 80 mg/L296%
June 2026BOD, 5-day, 20 deg. C, monthly average71≤ 30 mg/L137%
June 2026BOD, 5-day, 20 deg. C, weekly average71≤ 45 mg/L58%
June 2026Nitrogen, ammonia total [as N], monthly average3.7≤ 1.3 mg/L185%
June 2026Solids, suspended percent removal, monthly average minimum36≥ 65 %83%
July 2026Nitrogen, ammonia total [as N], monthly average5.62≤ .9 mg/L524%
July 2026Solids, total suspended, monthly average142≤ 60 mg/L137%
July 2026Solids, total suspended, weekly average142≤ 80 mg/L78%

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≥ 6.5 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedweekly average≤ 80 mg/Lall year001
Solids, total suspendedmonthly average≤ 60 mg/Lall year001
Oil and grease [soxhlet extr.] tot.daily maximumreport only (mg/L)all year001
Oil and grease [soxhlet extr.] tot.monthly averagereport only (mg/L)all year001
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LMay001
Nitrogen, ammonia total [as N]daily maximum≤ 10.1 mg/LMar, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 8.4 mg/LJul, Aug001
Nitrogen, ammonia total [as N]daily maximum≤ 8.4 mg/LNov001
Nitrogen, ammonia total [as N]daily maximum≤ 10.1 mg/LJun001
Nitrogen, ammonia total [as N]daily maximum≤ 12.1 mg/LJan, Feb001
Nitrogen, ammonia total [as N]daily maximum≤ 8.4 mg/LApr001
Nitrogen, ammonia total [as N]daily maximum≤ 8.4 mg/LSep001
Nitrogen, ammonia total [as N]daily maximum≤ 8.4 mg/LOct001
Nitrogen, ammonia total [as N]monthly average≤ 2.1 mg/LMay001
Nitrogen, ammonia total [as N]monthly average≤ 2.7 mg/LMar, Dec001
Nitrogen, ammonia total [as N]monthly average≤ .9 mg/LJul, Aug001
Nitrogen, ammonia total [as N]monthly average≤ 2.4 mg/LNov001
Nitrogen, ammonia total [as N]monthly average≤ 1.3 mg/LJun001
Nitrogen, ammonia total [as N]monthly average≤ 3.1 mg/LJan, Feb001
Nitrogen, ammonia total [as N]monthly average≤ 2.1 mg/LApr001
Nitrogen, ammonia total [as N]monthly average≤ 1.2 mg/LSep001
Nitrogen, ammonia total [as N]monthly average≤ 1.8 mg/LOct001
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

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/MO0101648 · MCP: https://passage-data.com/mcp