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Felsenthal, City of

Sewage treatment plant, Felsenthal, Arkansas. NPDES permit AR0039659, in force until Jul 31, 2029. Last 12 months: over a limit 4 times (last July 2026), 19 required values missing, 16 of 17 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: form A monthly (4 values), form Q quarterly (7 values), form F quarterly
Last report on file
July 2026
Oct 2024 – Sep 2025
1 value over a limit, 26 required values missing, 19 of 20 reports late

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

Period endingParameterReportedLimitOver by
October 2025Oxygen, dissolved [DO], instantaneous minimum1.67 mg/L≥ 5 mg/L67%
July 2026Nitrogen, ammonia total [as N], 7-day average12.8 mg/L≤ 12 mg/L7%
July 2026Nitrogen, ammonia total [as N], monthly average12.8 mg/L≤ 8 mg/L60%
July 2026Oxygen, dissolved [DO], instantaneous minimum2.67 mg/L≥ 5 mg/L47%

Limits in force (22)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]instantaneous minimum≥ 2 mg/LJan, Feb, Mar, Apr, Nov, Dec
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/LMay–Oct
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. C7-day average≤ 45 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cmonthly average≤ 12.3 lb/dJan, Feb, Mar, Apr, Nov, Dec
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspended7-day average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 12.3 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 8 mg/LMay–Oct
Nitrogen, ammonia total [as N]7-day average≤ 12 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 3.3 lb/dMay–Oct
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Coliform, fecal general30-day geometric mean≤ 1000 #/100mLall year
Coliform, fecal general7-day geometric mean≤ 2000 #/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≤ 25 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]7-day average≤ 38 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10.2 lb/dMay–Oct

How strict are these limits?

Cited limits by parameter: Arkansas'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/AR0039659 · MCP: https://passage-data.com/mcp