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Pittsburg Co RWD #20

Sewage treatment plant, Eufaula, Oklahoma. NPDES permit OK0100625, in force until Jun 30, 2028. Last 12 months: over a limit 6 times (last March 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (20 values)
Renewal application due
Jan 2, 2028 · 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, 0 required values missing, 1 of 12 reports late

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

Period endingParameterReportedLimitOver by
December 2025BOD, carbonaceous [5 day, 20 C], monthly average19.3 mg/L≤ 10 mg/L93%
December 2025BOD, carbonaceous [5 day, 20 C], weekly average21.7 mg/L≤ 15 mg/L45%
January 2026BOD, carbonaceous [5 day, 20 C], monthly average16.2 mg/L≤ 10 mg/L62%
January 2026BOD, carbonaceous [5 day, 20 C], weekly average17.8 mg/L≤ 15 mg/L19%
February 2026BOD, carbonaceous [5 day, 20 C], monthly average11.6 mg/L≤ 10 mg/L16%
March 2026BOD, carbonaceous [5 day, 20 C], weekly average25.7 mg/L≤ 15 mg/L71%

Limits in force (23)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 5 mg/LJan, Feb, Mar, Apr, May, Nov, Dec
Oxygen, dissolved [DO]minimum≥ 4 mg/LJun–Oct
pHminimum≥ 6.5 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 15 mg/Lall year
Solids, total suspendedweekly average≤ 22.5 mg/Lall year
Solids, total suspendedmonthly average≤ 10.01 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/Lall year
Nitrogen, ammonia total [as N]weekly average≤ 3 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 1.33 lb/dall year
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year
Phosphorus, total [as P]weekly average≤ 1.5 mg/Lall year
Phosphorus, total [as P]monthly average≤ .67 lb/dall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualinstantaneous maximum≤ .099 mg/Lall year
E. coligeometric mean≤ 126 MPN/100mLMay–Sep
E. colidaily maximum≤ 235 MPN/100mLMay–Sep
Coliform, total generalgeometric mean≤ 5000 CFU/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
Coliform, total generaldaily maximum≤ 20000 CFU/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 15 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 6.67 lb/dall year

How strict are these limits?

Cited limits by parameter: Oklahoma's rules and the federal ones.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/OK0100625 · MCP: https://passage-data.com/mcp