Keota PWA — NPDES permit OK0031186: limits, due date and EPA's record

Keota PWA

Sewage treatment plant, Keota, Oklahoma. NPDES permit OK0031186, in force until Nov 30, 2028. Last 12 months: over a limit 18 times (last May 2026), 22 required values missing, 6 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due

About 15 days after each period: form A monthly (13 values)

Last report on file

August 2026

Oct 2024 – Sep 2025

24 values over a limit, 52 required values missing, 6 of 12 reports late

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

All 18 values over a limit

Period ending	Parameter	Reported	Limit	Over by
October 2025	BOD, 5-day, 20 deg. C, monthly average	21.8 lb/d	≤ 12.5 lb/d	74%
October 2025	BOD, 5-day, 20 deg. C, monthly average	21.8 lb/d	≤ 12.5 lb/d	74%
October 2025	BOD, 5-day, 20 deg. C, monthly average	35.3 mg/L	≤ 20 mg/L	77%
October 2025	BOD, 5-day, 20 deg. C, monthly average	35.3 mg/L	≤ 20 mg/L	77%
October 2025	BOD, 5-day, 20 deg. C, weekly average	35.3 mg/L	≤ 30 mg/L	18%
October 2025	BOD, 5-day, 20 deg. C, weekly average	35.3 mg/L	≤ 30 mg/L	18%
October 2025	Solids, total suspended, monthly average	28.7 lb/d	≤ 18.8 lb/d	53%
October 2025	Solids, total suspended, monthly average	28.7 lb/d	≤ 18.8 lb/d	53%
October 2025	Solids, total suspended, monthly average	46.4 mg/L	≤ 30 mg/L	55%
October 2025	Solids, total suspended, monthly average	46.4 mg/L	≤ 30 mg/L	55%
October 2025	Solids, total suspended, weekly average	46.4 mg/L	≤ 45 mg/L	3%
October 2025	Solids, total suspended, weekly average	46.4 mg/L	≤ 45 mg/L	3%
March 2026	BOD, 5-day, 20 deg. C, monthly average	26.2 lb/d	≤ 12.5 lb/d	110%
March 2026	BOD, 5-day, 20 deg. C, monthly average	34.3 mg/L	≤ 20 mg/L	72%
March 2026	BOD, 5-day, 20 deg. C, weekly average	34.3 mg/L	≤ 30 mg/L	14%
March 2026	Solids, total suspended, monthly average	22.9 lb/d	≤ 18.8 lb/d	22%
May 2026	Solids, total suspended, monthly average	30.4 mg/L	≤ 30 mg/L	1%
May 2026	pH, maximum	9.6 SU	≤ 9 SU	—

Limits in force (13)

Parameter	Statistic	Limit	Months
BOD, 5-day, 20 deg. C	monthly average	≤ 20 mg/L	all year
BOD, 5-day, 20 deg. C	weekly average	≤ 30 mg/L	all year
BOD, 5-day, 20 deg. C	monthly average	≤ 12.5 lb/d	all year
pH	minimum	≥ 6.5 SU	all year
pH	maximum	≤ 9 SU	all year
Solids, total suspended	monthly average	≤ 30 mg/L	all year
Solids, total suspended	weekly average	≤ 45 mg/L	all year
Solids, total suspended	monthly average	≤ 18.8 lb/d	all year
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year
Chlorine, total residual	instantaneous maximum	≤ .099 mg/L	all year
E. coli	geometric mean	≤ 126 CFU/100mL	May–Sep
E. coli	daily maximum	≤ 235 CFU/100mL	May–Sep

How strict are these limits?

E. coli, daily maximum 235 CFU/100mL — stricter than 90% of 62 other minor POTWs in Oklahoma; 10% have the same limit

BOD, 5-day, 20 deg. C, monthly average 20 mg/L — stricter than 60% of 158 other minor POTWs in Oklahoma; 38% have the same limit

BOD, 5-day, 20 deg. C, weekly average 30 mg/L — stricter than 60% of 152 other minor POTWs in Oklahoma; 38% have the same limit

Your permit document is the final word. As JSON: /api/v1/permits/OK0031186 · MCP: https://passage-data.com/mcp