Passage Data · Check a report · Use it from your AI

Quapaw PWA

Sewage treatment plant, Quapaw, Oklahoma. NPDES permit OK0028258, in force until Oct 31, 2027. Last 12 months: over a limit 8 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (12 values)
Renewal application due
May 4, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
8 values over a limit, 0 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
October 2025pH, maximum9.3 SU≤ 9 SU—
February 2026Solids, total suspended, monthly average93.85 mg/L≤ 90 mg/L4%
May 2026pH, maximum10 SU≤ 9 SU—
June 2026E. coli, daily maximum479 MPN/100mL≤ 406 MPN/100mL18%
June 2026E. coli, geometric mean142.91 MPN/100mL≤ 126 MPN/100mL13%
June 2026pH, maximum9.3 SU≤ 9 SU—
July 2026pH, maximum10.1 SU≤ 9 SU—
August 2026pH, maximum9.9 SU≤ 9 SU—

Limits in force (14)

ParameterStatisticLimitMonths
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 34.3 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≤ 102.8 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
E. coligeometric mean≤ 126 MPN/100mLMay–Sep
E. coligeometric mean≤ 630 MPN/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
E. colidaily maximum≤ 406 MPN/100mLMay–Sep
E. colidaily maximum≤ 2030 MPN/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec

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

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/OK0028258 · MCP: https://passage-data.com/mcp