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Oakland PWA

Sewage treatment plant, Oakland, Oklahoma. NPDES permit OK0031933, in force until Sep 30, 2028. Last 12 months: over a limit 5 times (last March 2026), 63 required values missing, 10 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (11 values)
Renewal application due
Apr 3, 2028 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
4 values over a limit, 32 required values missing, 6 of 12 reports late

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

Period endingParameterReportedLimitOver by
February 2026BOD, 5-day, 20 deg. C, monthly average37.5 mg/L≤ 30 mg/L25%
February 2026BOD, 5-day, 20 deg. C, monthly average37.5 mg/L≤ 30 mg/L25%
March 2026BOD, 5-day, 20 deg. C, monthly average65.3 mg/L≤ 30 mg/L118%
March 2026BOD, 5-day, 20 deg. C, weekly average65.3 mg/L≤ 45 mg/L45%
March 2026Solids, total suspended, monthly average95 mg/L≤ 90 mg/L6%

Limits in force (11)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/LJun–Oct
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 15 lb/dall year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 90 mg/Lall year
Solids, total suspendedweekly average≤ 135 mg/Lall year
Solids, total suspendedmonthly average≤ 45 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

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/OK0031933 · MCP: https://passage-data.com/mcp