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Red Oak PWA

Sewage treatment plant, Red Oak, Oklahoma. NPDES permit OK0031631, in force until Dec 31, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (11 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 3 of 12 reports late

Limits in force (22)

ParameterStatisticLimitMonths
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cmonthly average≤ 0 mg/LMay–Oct
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cweekly average≤ 0 mg/LMay–Oct
BOD, 5-day, 20 deg. Cmonthly average≤ 22.5 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cmonthly average≤ 0 lb/dMay–Oct
pHminimum≥ 6.5 SUJan, Feb, Mar, Apr, Nov, Dec
pHminimum≥ 0 SUMay–Oct
pHmaximum≤ 9 SUJan, Feb, Mar, Apr, Nov, Dec
pHmaximum≤ 0 SUMay–Oct
Solids, total suspendedmonthly average≤ 90 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedmonthly average≤ 0 mg/LMay–Oct
Solids, total suspendedweekly average≤ 135 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedweekly average≤ 0 mg/LMay–Oct
Solids, total suspendedmonthly average≤ 67.6 lb/dJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedmonthly average≤ 0 lb/dMay–Oct
Phosphorus, total [as P]monthly averagereport only (mg/L)Jan, Feb, Mar, Apr, Nov, Dec
Phosphorus, total [as P]monthly average≤ 0 mg/LMay–Oct
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)Jan, Feb, Mar, Apr, Nov, Dec
Flow, in conduit or thru treatment plantmonthly average≤ 0 MGDMay–Oct
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)Jan, Feb, Mar, Apr, Nov, Dec
Flow, in conduit or thru treatment plantdaily maximum≤ 0 MGDMay–Oct

How strict are these limits?

Cited limits by parameter: Oklahoma'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/OK0031631 · MCP: https://passage-data.com/mcp