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Morris, City of (NW Facility)

Sewage treatment plant, Morris, Oklahoma. NPDES permit OK0028924, in force until Jun 30, 2027. Last 12 months: over a limit 9 times (last July 2026), 10 required values missing, 3 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: Jan 1, 2027 · 180 days before expiry; your permit may set another date
Last report on file: August 2026
Oct 2024 – Sep 2025: 9 values over a limit, 0 required values missing, 1 of 12 reports late

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

Period ending	Parameter	Reported	Limit	Over by
February 2026	pH, maximum	9.31 SU	≤ 9 SU	—
March 2026	pH, maximum	9.35 SU	≤ 9 SU	—
April 2026	pH, maximum	9.88 SU	≤ 9 SU	—
May 2026	pH, maximum	9.38 SU	≤ 9 SU	—
June 2026	BOD, 5-day, 20 deg. C, monthly average	153 lb/d	≤ 42.8 lb/d	257%
June 2026	BOD, 5-day, 20 deg. C, monthly average	53.45 mg/L	≤ 30 mg/L	78%
June 2026	BOD, 5-day, 20 deg. C, weekly average	90.9 mg/L	≤ 45 mg/L	102%
June 2026	pH, maximum	9.68 SU	≤ 9 SU	—
July 2026	pH, maximum	9.77 SU	≤ 9 SU	—

Limits in force (11)

Parameter	Statistic	Limit	Months
Oxygen, dissolved [DO]	monthly minimum	≥ 5 mg/L	Jun–Oct
BOD, 5-day, 20 deg. C	monthly average	≤ 30 mg/L	all year
BOD, 5-day, 20 deg. C	weekly average	≤ 45 mg/L	all year
BOD, 5-day, 20 deg. C	monthly average	≤ 42.8 lb/d	all year
pH	minimum	≥ 6.5 SU	all year
pH	maximum	≤ 9 SU	all year
Solids, total suspended	monthly average	≤ 90 mg/L	all year
Solids, total suspended	weekly average	≤ 135 mg/L	all year
Solids, total suspended	monthly average	≤ 128.4 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

How strict are these limits?

Oxygen, dissolved [DO], monthly minimum at least 5 mg/L — stricter than 71% of 950 other minor POTWs nationwide; 10% have the same limit

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/OK0028924 · MCP: https://passage-data.com/mcp