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City of Pocahontas

Sewage treatment plant, Pocahontas, Missouri. NPDES permit MO0130150, in force until Sep 30, 2030. Last 12 months: over a limit 6 times (last March 2026), 2 of 22 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form M monthly (16 values), outfall INF form IM monthly (2 values), outfall 001 form WA every 60 months
Last report on file
August 2026
Oct 2024 – Sep 2025
14 values over a limit, 15 required values missing, 6 of 12 reports late

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

Period endingParameterReportedLimitOver by
November 2025E. coli, 30-day geometric mean2420≤ 206 #/100mL1075%
November 2025E. coli, 7-day geometric mean2420≤ 1030 #/100mL135%
November 2025Solids, suspended percent removal, monthly average minimum11.63≥ 65 %152%
December 2025BOD, 5-day, 20 deg. C, monthly average69.5≤ 45 mg/L54%
December 2025BOD, 5-day, 20 deg. C, weekly average69.5≤ 65 mg/L7%
March 2026Nitrogen, ammonia total [as N], monthly average6.27≤ 2.7 mg/L132%

Limits in force (34)

ParameterStatisticLimitMonthsOutfall
BOD, 5-day, 20 deg. Cweekly average≤ 65 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 45 mg/Lall year001
pHminimum≥ 6.5 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedweekly average≤ 110 mg/Lall year001
Solids, total suspendedmonthly average≤ 70 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≤ 3.6 mg/LSep001
Nitrogen, ammonia total [as N]daily maximum≤ 3.6 mg/LApr, May001
Nitrogen, ammonia total [as N]daily maximum≤ 7.5 mg/LJan, Feb001
Nitrogen, ammonia total [as N]daily maximum≤ 3.6 mg/LJul, Aug001
Nitrogen, ammonia total [as N]daily maximum≤ 7.5 mg/LNov001
Nitrogen, ammonia total [as N]daily maximum≤ 7.5 mg/LMar, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 3.6 mg/LJun001
Nitrogen, ammonia total [as N]daily maximum≤ 7.5 mg/LOct001
Nitrogen, ammonia total [as N]monthly average≤ 1.2 mg/LSep001
Nitrogen, ammonia total [as N]monthly average≤ 1.4 mg/LApr, May001
Nitrogen, ammonia total [as N]monthly average≤ 2.9 mg/LJan, Feb001
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≤ 2.7 mg/LMar, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 1.3 mg/LJun001
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≤ 1030 #/100mLApr–Dec001
E. coli30-day geometric mean≤ 206 #/100mLApr–Dec001
Toxicity [acute], Ceriodaphnia dubiadaily maximumreport only (toxic)all year001
Toxicity [acute], Pimephales promelas [Fathead Minnow]daily maximumreport only (toxic)all year001
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/MO0130150 · MCP: https://passage-data.com/mcp