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Glenwood, City of

Sewage treatment plant, Glenwood, Arkansas. NPDES permit AR0035645 expired Jul 31, 2024; its limits still apply. Last 12 months: over a limit 12 times (last September 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: form A monthly (19 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
8 values over a limit, 0 required values missing, 1 of 12 reports late

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

Period endingParameterReportedLimitOver by
November 2025BOD, carbonaceous [5 day, 20 C], 7-day average27.6 mg/L≤ 15 mg/L84%
November 2025BOD, carbonaceous [5 day, 20 C], monthly average14.8 mg/L≤ 10 mg/L48%
December 2025BOD, carbonaceous [5 day, 20 C], 7-day average26.8 mg/L≤ 15 mg/L79%
December 2025BOD, carbonaceous [5 day, 20 C], monthly average14.4 mg/L≤ 10 mg/L44%
March 2026BOD, carbonaceous [5 day, 20 C], 7-day average27.5 mg/L≤ 15 mg/L83%
March 2026BOD, carbonaceous [5 day, 20 C], monthly average16.73 mg/L≤ 10 mg/L67%
March 2026BOD, carbonaceous [5 day, 20 C], monthly average40 lb/d≤ 34.2 lb/d17%
May 2026BOD, carbonaceous [5 day, 20 C], monthly average11.55 mg/L≤ 10 mg/L16%
June 2026BOD, carbonaceous [5 day, 20 C], 7-day average17.4 mg/L≤ 15 mg/L16%
June 2026E. coli, 7-day geometric mean291 #/100mL≤ 126 #/100mL131%
July 2026E. coli, 7-day geometric mean> 2420 #/100mL≤ 126 #/100mL—
September 2026Chlorine, total residual, instantaneous maximum.07 mg/L≤ .033 mg/L112%

Limits in force (19)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/Lall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 15 mg/Lall year
Solids, total suspended7-day average≤ 22.5 mg/Lall year
Solids, total suspendedmonthly average≤ 51.3 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 5 mg/Lall year
Nitrogen, ammonia total [as N]7-day average≤ 7.5 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 17.1 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
Chlorine, total residualinstantaneous maximum≤ .033 mg/Lall year
E. coli30-day geometric mean≤ 126 #/100mLall year
E. coli7-day geometric mean≤ 126 #/100mLall year
Overflowsmonthly totalreport only (occur/mo)all year
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (gal)all year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 15 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 34.2 lb/dall year

How strict are these limits?

Cited limits by parameter: Arkansas'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/AR0035645 · MCP: https://passage-data.com/mcp